./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:28:35,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:28:35,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:28:35,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:28:35,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:28:35,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:28:35,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:28:35,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:28:35,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:28:35,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:28:35,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:28:35,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:28:35,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:28:35,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:28:35,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:28:35,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:28:35,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:28:35,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:28:35,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:28:35,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:28:35,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:28:35,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:28:35,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:28:35,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:28:35,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:28:35,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:28:35,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:28:35,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:28:35,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:28:35,922 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:28:35,922 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:28:35,923 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:28:35,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:28:35,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:28:35,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:28:35,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:28:35,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:28:35,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:28:35,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:28:35,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:28:35,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:28:35,934 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 18:28:35,974 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:28:35,975 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:28:35,975 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:28:35,976 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:28:35,977 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:28:35,977 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:28:35,978 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:28:35,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:28:35,978 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:28:35,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:28:35,980 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:28:35,980 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:28:35,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:28:35,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:28:35,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:28:35,981 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 18:28:35,981 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 18:28:35,981 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 18:28:35,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:28:35,982 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 18:28:35,982 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:28:35,982 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:28:35,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:28:35,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:28:35,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:28:35,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:28:35,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:28:35,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:28:35,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:28:35,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:28:35,985 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d [2022-11-18 18:28:36,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:28:36,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:28:36,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:28:36,345 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:28:36,346 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:28:36,347 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2022-11-18 18:28:36,430 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/data/3c4b33037/4c37a40c146a4872bc8af442d563aaa8/FLAGc77266257 [2022-11-18 18:28:36,914 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:28:36,914 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2022-11-18 18:28:36,922 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/data/3c4b33037/4c37a40c146a4872bc8af442d563aaa8/FLAGc77266257 [2022-11-18 18:28:37,298 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/data/3c4b33037/4c37a40c146a4872bc8af442d563aaa8 [2022-11-18 18:28:37,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:28:37,302 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:28:37,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:28:37,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:28:37,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:28:37,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:28:37" (1/1) ... [2022-11-18 18:28:37,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17843b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:37, skipping insertion in model container [2022-11-18 18:28:37,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:28:37" (1/1) ... [2022-11-18 18:28:37,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:28:37,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:28:37,668 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2022-11-18 18:28:37,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:28:37,704 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-18 18:28:37,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@302b3bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:37, skipping insertion in model container [2022-11-18 18:28:37,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:28:37,706 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-18 18:28:37,709 INFO L158 Benchmark]: Toolchain (without parser) took 405.55ms. Allocated memory is still 121.6MB. Free memory was 83.0MB in the beginning and 95.9MB in the end (delta: -12.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 18:28:37,710 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 121.6MB. Free memory is still 100.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:28:37,712 INFO L158 Benchmark]: CACSL2BoogieTranslator took 399.12ms. Allocated memory is still 121.6MB. Free memory was 82.9MB in the beginning and 95.9MB in the end (delta: -13.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 18:28:37,714 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 121.6MB. Free memory is still 100.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 399.12ms. Allocated memory is still 121.6MB. Free memory was 82.9MB in the beginning and 95.9MB in the end (delta: -13.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 165]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:28:39,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:28:39,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:28:39,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:28:39,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:28:39,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:28:39,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:28:39,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:28:39,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:28:39,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:28:39,937 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:28:39,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:28:39,940 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:28:39,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:28:39,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:28:39,951 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:28:39,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:28:39,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:28:39,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:28:39,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:28:39,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:28:39,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:28:39,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:28:39,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:28:39,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:28:39,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:28:39,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:28:39,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:28:39,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:28:39,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:28:39,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:28:39,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:28:39,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:28:39,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:28:39,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:28:39,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:28:39,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:28:39,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:28:39,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:28:39,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:28:39,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:28:40,002 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-18 18:28:40,048 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:28:40,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:28:40,050 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:28:40,050 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:28:40,052 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:28:40,052 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:28:40,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:28:40,054 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:28:40,054 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:28:40,055 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:28:40,056 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:28:40,056 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:28:40,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:28:40,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:28:40,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:28:40,058 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 18:28:40,058 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 18:28:40,058 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 18:28:40,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:28:40,059 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 18:28:40,059 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 18:28:40,059 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 18:28:40,060 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:28:40,060 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:28:40,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:28:40,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:28:40,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:28:40,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:28:40,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:28:40,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:28:40,063 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 18:28:40,063 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 18:28:40,064 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 18:28:40,064 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d [2022-11-18 18:28:40,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:28:40,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:28:40,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:28:40,525 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:28:40,526 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:28:40,528 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2022-11-18 18:28:40,589 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/data/43157d6da/2594e996fdda49b3aede96e04079a369/FLAGcc16cb132 [2022-11-18 18:28:41,168 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:28:41,168 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2022-11-18 18:28:41,181 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/data/43157d6da/2594e996fdda49b3aede96e04079a369/FLAGcc16cb132 [2022-11-18 18:28:41,604 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/data/43157d6da/2594e996fdda49b3aede96e04079a369 [2022-11-18 18:28:41,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:28:41,609 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:28:41,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:28:41,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:28:41,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:28:41,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:28:41" (1/1) ... [2022-11-18 18:28:41,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24702e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:41, skipping insertion in model container [2022-11-18 18:28:41,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:28:41" (1/1) ... [2022-11-18 18:28:41,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:28:41,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:28:41,890 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2022-11-18 18:28:41,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:28:41,943 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-18 18:28:41,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:28:41,968 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2022-11-18 18:28:41,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:28:41,981 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:28:42,027 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2022-11-18 18:28:42,030 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:28:42,048 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:28:42,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:42 WrapperNode [2022-11-18 18:28:42,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:28:42,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:28:42,050 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:28:42,050 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:28:42,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:42" (1/1) ... [2022-11-18 18:28:42,073 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:42" (1/1) ... [2022-11-18 18:28:42,105 INFO L138 Inliner]: procedures = 27, calls = 63, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 307 [2022-11-18 18:28:42,110 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:28:42,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:28:42,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:28:42,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:28:42,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:42" (1/1) ... [2022-11-18 18:28:42,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:42" (1/1) ... [2022-11-18 18:28:42,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:42" (1/1) ... [2022-11-18 18:28:42,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:42" (1/1) ... [2022-11-18 18:28:42,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:42" (1/1) ... [2022-11-18 18:28:42,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:42" (1/1) ... [2022-11-18 18:28:42,196 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:42" (1/1) ... [2022-11-18 18:28:42,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:42" (1/1) ... [2022-11-18 18:28:42,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:28:42,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:28:42,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:28:42,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:28:42,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:42" (1/1) ... [2022-11-18 18:28:42,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:28:42,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:28:42,256 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:28:42,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:28:42,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:28:42,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-18 18:28:42,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:28:42,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-18 18:28:42,304 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 18:28:42,304 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 18:28:42,304 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 18:28:42,304 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 18:28:42,304 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 18:28:42,305 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 18:28:42,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 18:28:42,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 18:28:42,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 18:28:42,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:28:42,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:28:42,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:28:42,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-18 18:28:42,307 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:28:42,456 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:28:42,458 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:28:43,534 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:28:43,780 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:28:43,780 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 18:28:43,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:28:43 BoogieIcfgContainer [2022-11-18 18:28:43,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:28:43,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:28:43,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:28:43,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:28:43,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:28:41" (1/3) ... [2022-11-18 18:28:43,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d1c55db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:28:43, skipping insertion in model container [2022-11-18 18:28:43,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:42" (2/3) ... [2022-11-18 18:28:43,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d1c55db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:28:43, skipping insertion in model container [2022-11-18 18:28:43,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:28:43" (3/3) ... [2022-11-18 18:28:43,791 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2022-11-18 18:28:43,811 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:28:43,811 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2022-11-18 18:28:43,811 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:28:43,937 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 18:28:43,978 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-18 18:28:43,995 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 290 places, 305 transitions, 634 flow [2022-11-18 18:28:43,999 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 290 places, 305 transitions, 634 flow [2022-11-18 18:28:44,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 290 places, 305 transitions, 634 flow [2022-11-18 18:28:44,134 INFO L130 PetriNetUnfolder]: 25/302 cut-off events. [2022-11-18 18:28:44,135 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 18:28:44,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 302 events. 25/302 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 355 event pairs, 0 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 249. Up to 4 conditions per place. [2022-11-18 18:28:44,158 INFO L119 LiptonReduction]: Number of co-enabled transitions 5066 [2022-11-18 18:29:46,285 WARN L233 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 148 DAG size of output: 147 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-18 18:29:47,712 INFO L134 LiptonReduction]: Checked pairs total: 10724 [2022-11-18 18:29:47,713 INFO L136 LiptonReduction]: Total number of compositions: 332 [2022-11-18 18:29:47,721 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 73 places, 72 transitions, 168 flow [2022-11-18 18:29:47,916 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3388 states, 2710 states have (on average 4.799630996309963) internal successors, (13007), 3387 states have internal predecessors, (13007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:47,935 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:29:47,940 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5d32e2fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:29:47,940 INFO L358 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2022-11-18 18:29:47,951 INFO L276 IsEmpty]: Start isEmpty. Operand has 3388 states, 2710 states have (on average 4.799630996309963) internal successors, (13007), 3387 states have internal predecessors, (13007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:47,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 18:29:47,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:29:47,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 18:29:47,957 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:29:47,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:47,963 INFO L85 PathProgramCache]: Analyzing trace with hash 44310, now seen corresponding path program 1 times [2022-11-18 18:29:47,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:29:47,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64039154] [2022-11-18 18:29:47,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:47,977 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:29:47,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:29:47,986 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:29:48,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-18 18:29:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:48,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:29:48,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:48,350 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:29:48,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:29:48,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:48,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:29:48,383 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:29:48,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64039154] [2022-11-18 18:29:48,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64039154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:29:48,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:29:48,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 18:29:48,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486606942] [2022-11-18 18:29:48,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:29:48,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:29:48,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:29:48,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:29:48,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:29:48,466 INFO L87 Difference]: Start difference. First operand has 3388 states, 2710 states have (on average 4.799630996309963) internal successors, (13007), 3387 states have internal predecessors, (13007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:49,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:29:49,038 INFO L93 Difference]: Finished difference Result 3384 states and 12591 transitions. [2022-11-18 18:29:49,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:29:49,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-18 18:29:49,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:29:49,088 INFO L225 Difference]: With dead ends: 3384 [2022-11-18 18:29:49,088 INFO L226 Difference]: Without dead ends: 3384 [2022-11-18 18:29:49,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:29:49,093 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 60 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:29:49,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 0 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 18:29:49,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3384 states. [2022-11-18 18:29:49,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3384 to 3384. [2022-11-18 18:29:49,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3384 states, 2710 states have (on average 4.646125461254613) internal successors, (12591), 3383 states have internal predecessors, (12591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:49,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3384 states to 3384 states and 12591 transitions. [2022-11-18 18:29:49,358 INFO L78 Accepts]: Start accepts. Automaton has 3384 states and 12591 transitions. Word has length 2 [2022-11-18 18:29:49,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:29:49,359 INFO L495 AbstractCegarLoop]: Abstraction has 3384 states and 12591 transitions. [2022-11-18 18:29:49,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:49,359 INFO L276 IsEmpty]: Start isEmpty. Operand 3384 states and 12591 transitions. [2022-11-18 18:29:49,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 18:29:49,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:29:49,360 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 18:29:49,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:29:49,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:29:49,567 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:29:49,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:49,567 INFO L85 PathProgramCache]: Analyzing trace with hash 44311, now seen corresponding path program 1 times [2022-11-18 18:29:49,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:29:49,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29638340] [2022-11-18 18:29:49,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:49,568 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:29:49,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:29:49,573 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:29:49,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-18 18:29:49,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:49,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:29:49,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:49,824 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 18:29:49,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 18:29:49,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:49,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:29:49,912 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:29:49,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29638340] [2022-11-18 18:29:49,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29638340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:29:49,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:29:49,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 18:29:49,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554226879] [2022-11-18 18:29:49,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:29:49,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:29:49,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:29:49,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:29:49,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:29:49,916 INFO L87 Difference]: Start difference. First operand 3384 states and 12591 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:51,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:29:51,137 INFO L93 Difference]: Finished difference Result 6764 states and 25178 transitions. [2022-11-18 18:29:51,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:29:51,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-18 18:29:51,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:29:51,231 INFO L225 Difference]: With dead ends: 6764 [2022-11-18 18:29:51,243 INFO L226 Difference]: Without dead ends: 6764 [2022-11-18 18:29:51,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:29:51,249 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 54 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:29:51,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 0 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 18:29:51,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6764 states. [2022-11-18 18:29:51,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6764 to 3387. [2022-11-18 18:29:51,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3387 states, 2713 states have (on average 4.643936601548102) internal successors, (12599), 3386 states have internal predecessors, (12599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:51,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3387 states to 3387 states and 12599 transitions. [2022-11-18 18:29:51,643 INFO L78 Accepts]: Start accepts. Automaton has 3387 states and 12599 transitions. Word has length 2 [2022-11-18 18:29:51,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:29:51,643 INFO L495 AbstractCegarLoop]: Abstraction has 3387 states and 12599 transitions. [2022-11-18 18:29:51,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:51,644 INFO L276 IsEmpty]: Start isEmpty. Operand 3387 states and 12599 transitions. [2022-11-18 18:29:51,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 18:29:51,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:29:51,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 18:29:51,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:29:51,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:29:51,846 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:29:51,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:51,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1378830, now seen corresponding path program 1 times [2022-11-18 18:29:51,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:29:51,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813777955] [2022-11-18 18:29:51,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:51,847 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:29:51,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:29:51,849 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:29:51,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-18 18:29:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:51,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 18:29:51,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:52,183 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 18:29:52,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 18:29:52,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:52,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:29:52,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:52,642 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:29:52,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813777955] [2022-11-18 18:29:52,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813777955] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:29:52,643 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:29:52,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-18 18:29:52,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434763481] [2022-11-18 18:29:52,643 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:29:52,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:29:52,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:29:52,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:29:52,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:29:52,644 INFO L87 Difference]: Start difference. First operand 3387 states and 12599 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:55,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:29:55,907 INFO L93 Difference]: Finished difference Result 10150 states and 37781 transitions. [2022-11-18 18:29:55,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:29:55,909 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-18 18:29:55,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:29:56,003 INFO L225 Difference]: With dead ends: 10150 [2022-11-18 18:29:56,004 INFO L226 Difference]: Without dead ends: 10150 [2022-11-18 18:29:56,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:29:56,005 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 273 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:29:56,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 0 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-18 18:29:56,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10150 states. [2022-11-18 18:29:56,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10150 to 3396. [2022-11-18 18:29:56,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3396 states, 2722 states have (on average 4.6373989713445996) internal successors, (12623), 3395 states have internal predecessors, (12623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:56,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3396 states to 3396 states and 12623 transitions. [2022-11-18 18:29:56,318 INFO L78 Accepts]: Start accepts. Automaton has 3396 states and 12623 transitions. Word has length 3 [2022-11-18 18:29:56,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:29:56,319 INFO L495 AbstractCegarLoop]: Abstraction has 3396 states and 12623 transitions. [2022-11-18 18:29:56,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:56,319 INFO L276 IsEmpty]: Start isEmpty. Operand 3396 states and 12623 transitions. [2022-11-18 18:29:56,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-18 18:29:56,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:29:56,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-18 18:29:56,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-11-18 18:29:56,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:29:56,591 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:29:56,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:56,591 INFO L85 PathProgramCache]: Analyzing trace with hash 42818677, now seen corresponding path program 1 times [2022-11-18 18:29:56,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:29:56,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [706547096] [2022-11-18 18:29:56,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:56,592 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:29:56,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:29:56,594 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:29:56,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-18 18:29:56,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:56,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 18:29:56,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:56,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:29:56,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:29:56,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:29:56,900 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-18 18:29:56,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-11-18 18:29:56,947 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-11-18 18:29:56,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 45 [2022-11-18 18:29:57,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:29:57,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 18:29:57,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:29:57,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 18:29:57,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:57,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:29:57,100 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:29:57,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [706547096] [2022-11-18 18:29:57,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [706547096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:29:57,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:29:57,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:29:57,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720271626] [2022-11-18 18:29:57,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:29:57,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:29:57,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:29:57,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:29:57,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:29:57,102 INFO L87 Difference]: Start difference. First operand 3396 states and 12623 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:57,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:29:57,565 INFO L93 Difference]: Finished difference Result 2723 states and 9818 transitions. [2022-11-18 18:29:57,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:29:57,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-18 18:29:57,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:29:57,584 INFO L225 Difference]: With dead ends: 2723 [2022-11-18 18:29:57,584 INFO L226 Difference]: Without dead ends: 2723 [2022-11-18 18:29:57,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:29:57,586 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:29:57,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 2 Unchecked, 0.4s Time] [2022-11-18 18:29:57,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2022-11-18 18:29:57,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 2723. [2022-11-18 18:29:57,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2723 states, 2225 states have (on average 4.412584269662921) internal successors, (9818), 2722 states have internal predecessors, (9818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:57,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2723 states to 2723 states and 9818 transitions. [2022-11-18 18:29:57,708 INFO L78 Accepts]: Start accepts. Automaton has 2723 states and 9818 transitions. Word has length 4 [2022-11-18 18:29:57,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:29:57,709 INFO L495 AbstractCegarLoop]: Abstraction has 2723 states and 9818 transitions. [2022-11-18 18:29:57,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:57,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2723 states and 9818 transitions. [2022-11-18 18:29:57,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-18 18:29:57,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:29:57,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-18 18:29:57,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:29:57,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:29:57,921 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:29:57,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:57,922 INFO L85 PathProgramCache]: Analyzing trace with hash 42818679, now seen corresponding path program 1 times [2022-11-18 18:29:57,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:29:57,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877491790] [2022-11-18 18:29:57,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:57,923 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:29:57,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:29:57,924 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:29:57,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-18 18:29:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:58,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 18:29:58,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:58,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:29:58,220 INFO L321 Elim1Store]: treesize reduction 86, result has 25.9 percent of original size [2022-11-18 18:29:58,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 55 [2022-11-18 18:29:58,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:29:58,595 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:29:58,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 36 [2022-11-18 18:29:59,061 INFO L321 Elim1Store]: treesize reduction 28, result has 50.9 percent of original size [2022-11-18 18:29:59,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 80 [2022-11-18 18:30:00,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:00,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:30:00,179 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:30:00,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877491790] [2022-11-18 18:30:00,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877491790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:00,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:00,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:30:00,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463858632] [2022-11-18 18:30:00,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:00,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:30:00,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:30:00,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:30:00,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:30:00,181 INFO L87 Difference]: Start difference. First operand 2723 states and 9818 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:00,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:30:00,512 INFO L93 Difference]: Finished difference Result 2725 states and 9822 transitions. [2022-11-18 18:30:00,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:30:00,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-18 18:30:00,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:30:00,530 INFO L225 Difference]: With dead ends: 2725 [2022-11-18 18:30:00,531 INFO L226 Difference]: Without dead ends: 2725 [2022-11-18 18:30:00,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:30:00,532 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:30:00,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 61 Unchecked, 0.3s Time] [2022-11-18 18:30:00,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2725 states. [2022-11-18 18:30:00,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2725 to 2725. [2022-11-18 18:30:00,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2725 states, 2227 states have (on average 4.410417602155366) internal successors, (9822), 2724 states have internal predecessors, (9822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:00,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2725 states to 2725 states and 9822 transitions. [2022-11-18 18:30:00,649 INFO L78 Accepts]: Start accepts. Automaton has 2725 states and 9822 transitions. Word has length 4 [2022-11-18 18:30:00,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:30:00,649 INFO L495 AbstractCegarLoop]: Abstraction has 2725 states and 9822 transitions. [2022-11-18 18:30:00,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:00,650 INFO L276 IsEmpty]: Start isEmpty. Operand 2725 states and 9822 transitions. [2022-11-18 18:30:00,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 18:30:00,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:30:00,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 18:30:00,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:30:00,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:00,863 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:30:00,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:00,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1325291438, now seen corresponding path program 1 times [2022-11-18 18:30:00,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:30:00,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595235251] [2022-11-18 18:30:00,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:00,865 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:00,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:30:00,866 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:30:00,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-18 18:30:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:01,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 18:30:01,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:30:01,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:30:01,156 INFO L321 Elim1Store]: treesize reduction 86, result has 25.9 percent of original size [2022-11-18 18:30:01,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 55 [2022-11-18 18:30:01,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:30:01,620 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:30:01,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 36 [2022-11-18 18:30:01,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:30:01,928 INFO L321 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2022-11-18 18:30:01,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 60 [2022-11-18 18:30:02,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:30:02,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:30:02,950 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:30:02,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595235251] [2022-11-18 18:30:02,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [595235251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:02,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:02,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:30:02,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662695890] [2022-11-18 18:30:02,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:02,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:30:02,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:30:02,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:30:02,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:30:02,954 INFO L87 Difference]: Start difference. First operand 2725 states and 9822 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:03,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:30:03,268 INFO L93 Difference]: Finished difference Result 2726 states and 9824 transitions. [2022-11-18 18:30:03,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:30:03,269 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-18 18:30:03,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:30:03,282 INFO L225 Difference]: With dead ends: 2726 [2022-11-18 18:30:03,282 INFO L226 Difference]: Without dead ends: 2726 [2022-11-18 18:30:03,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:30:03,283 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 115 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:30:03,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 115 Unchecked, 0.3s Time] [2022-11-18 18:30:03,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2726 states. [2022-11-18 18:30:03,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2726 to 2724. [2022-11-18 18:30:03,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 2226 states have (on average 4.411500449236298) internal successors, (9820), 2723 states have internal predecessors, (9820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:03,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 9820 transitions. [2022-11-18 18:30:03,370 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 9820 transitions. Word has length 5 [2022-11-18 18:30:03,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:30:03,371 INFO L495 AbstractCegarLoop]: Abstraction has 2724 states and 9820 transitions. [2022-11-18 18:30:03,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:03,371 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 9820 transitions. [2022-11-18 18:30:03,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 18:30:03,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:30:03,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 18:30:03,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:30:03,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:03,584 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:30:03,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:03,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1327379412, now seen corresponding path program 1 times [2022-11-18 18:30:03,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:30:03,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102832503] [2022-11-18 18:30:03,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:03,585 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:03,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:30:03,587 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:30:03,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-18 18:30:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:03,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:30:03,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:30:03,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:30:03,933 INFO L321 Elim1Store]: treesize reduction 86, result has 25.9 percent of original size [2022-11-18 18:30:03,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 55 [2022-11-18 18:30:04,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:30:04,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:30:04,059 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:30:04,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:30:04,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:30:04,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:30:04,094 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:30:04,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102832503] [2022-11-18 18:30:04,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102832503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:04,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:04,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:30:04,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181563147] [2022-11-18 18:30:04,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:04,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:30:04,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:30:04,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:30:04,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:30:04,096 INFO L87 Difference]: Start difference. First operand 2724 states and 9820 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:04,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:30:04,506 INFO L93 Difference]: Finished difference Result 2051 states and 7015 transitions. [2022-11-18 18:30:04,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:30:04,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-18 18:30:04,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:30:04,515 INFO L225 Difference]: With dead ends: 2051 [2022-11-18 18:30:04,515 INFO L226 Difference]: Without dead ends: 2051 [2022-11-18 18:30:04,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:30:04,516 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 111 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:30:04,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 0 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 1 Unchecked, 0.4s Time] [2022-11-18 18:30:04,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2022-11-18 18:30:04,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 2050. [2022-11-18 18:30:04,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2050 states, 1728 states have (on average 4.058449074074074) internal successors, (7013), 2049 states have internal predecessors, (7013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:04,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2050 states to 2050 states and 7013 transitions. [2022-11-18 18:30:04,602 INFO L78 Accepts]: Start accepts. Automaton has 2050 states and 7013 transitions. Word has length 5 [2022-11-18 18:30:04,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:30:04,602 INFO L495 AbstractCegarLoop]: Abstraction has 2050 states and 7013 transitions. [2022-11-18 18:30:04,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:04,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2050 states and 7013 transitions. [2022-11-18 18:30:04,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 18:30:04,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:30:04,603 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-18 18:30:04,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-18 18:30:04,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:04,816 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:30:04,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:04,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1867795753, now seen corresponding path program 2 times [2022-11-18 18:30:04,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:30:04,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888154750] [2022-11-18 18:30:04,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:30:04,817 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:04,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:30:04,818 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:30:04,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-18 18:30:04,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:30:04,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:30:04,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 18:30:04,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:30:05,092 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 18:30:05,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 18:30:05,293 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:05,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:30:06,260 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:06,260 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:30:06,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888154750] [2022-11-18 18:30:06,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888154750] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:30:06,261 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:30:06,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-18 18:30:06,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833744703] [2022-11-18 18:30:06,261 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:30:06,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:30:06,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:30:06,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:30:06,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:30:06,263 INFO L87 Difference]: Start difference. First operand 2050 states and 7013 transitions. Second operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:10,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:30:13,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:30:15,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:30:18,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:30:19,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:30:21,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:30:23,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:30:28,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:30:28,399 INFO L93 Difference]: Finished difference Result 14248 states and 48911 transitions. [2022-11-18 18:30:28,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:30:28,401 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 18:30:28,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:30:28,459 INFO L225 Difference]: With dead ends: 14248 [2022-11-18 18:30:28,459 INFO L226 Difference]: Without dead ends: 14248 [2022-11-18 18:30:28,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:30:28,460 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1550 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1616 mSolverCounterSat, 146 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1616 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:30:28,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1550 Valid, 0 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1616 Invalid, 6 Unknown, 0 Unchecked, 20.4s Time] [2022-11-18 18:30:28,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14248 states. [2022-11-18 18:30:28,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14248 to 2062. [2022-11-18 18:30:28,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2062 states, 1740 states have (on average 4.044252873563218) internal successors, (7037), 2061 states have internal predecessors, (7037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:28,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 7037 transitions. [2022-11-18 18:30:28,688 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 7037 transitions. Word has length 6 [2022-11-18 18:30:28,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:30:28,689 INFO L495 AbstractCegarLoop]: Abstraction has 2062 states and 7037 transitions. [2022-11-18 18:30:28,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:28,689 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 7037 transitions. [2022-11-18 18:30:28,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 18:30:28,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:30:28,690 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 18:30:28,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-18 18:30:28,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:28,905 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:30:28,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:28,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1800890366, now seen corresponding path program 1 times [2022-11-18 18:30:28,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:30:28,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1081789948] [2022-11-18 18:30:28,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:28,907 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:28,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:30:28,908 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:30:28,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-18 18:30:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:29,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:30:29,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:30:29,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:30:29,222 INFO L321 Elim1Store]: treesize reduction 79, result has 27.5 percent of original size [2022-11-18 18:30:29,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 48 [2022-11-18 18:30:29,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:30:29,525 INFO L321 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2022-11-18 18:30:29,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 36 [2022-11-18 18:30:29,771 INFO L321 Elim1Store]: treesize reduction 42, result has 26.3 percent of original size [2022-11-18 18:30:29,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 32 [2022-11-18 18:30:30,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:30,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:30:30,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:30:30,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1081789948] [2022-11-18 18:30:30,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1081789948] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:30,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:30,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:30:30,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341729820] [2022-11-18 18:30:30,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:30,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:30:30,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:30:30,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:30:30,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:30:30,060 INFO L87 Difference]: Start difference. First operand 2062 states and 7037 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:30,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:30:30,367 INFO L93 Difference]: Finished difference Result 2066 states and 7045 transitions. [2022-11-18 18:30:30,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:30:30,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 18:30:30,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:30:30,375 INFO L225 Difference]: With dead ends: 2066 [2022-11-18 18:30:30,375 INFO L226 Difference]: Without dead ends: 2066 [2022-11-18 18:30:30,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:30:30,376 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:30:30,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 59 Unchecked, 0.3s Time] [2022-11-18 18:30:30,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2022-11-18 18:30:30,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 2066. [2022-11-18 18:30:30,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2066 states, 1744 states have (on average 4.039564220183486) internal successors, (7045), 2065 states have internal predecessors, (7045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:30,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2066 states to 2066 states and 7045 transitions. [2022-11-18 18:30:30,440 INFO L78 Accepts]: Start accepts. Automaton has 2066 states and 7045 transitions. Word has length 6 [2022-11-18 18:30:30,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:30:30,440 INFO L495 AbstractCegarLoop]: Abstraction has 2066 states and 7045 transitions. [2022-11-18 18:30:30,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:30,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2066 states and 7045 transitions. [2022-11-18 18:30:30,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 18:30:30,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:30:30,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 18:30:30,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-11-18 18:30:30,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:30,655 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:30:30,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:30,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1800890365, now seen corresponding path program 1 times [2022-11-18 18:30:30,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:30:30,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636695601] [2022-11-18 18:30:30,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:30,656 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:30,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:30:30,657 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:30:30,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-18 18:30:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:30,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 18:30:30,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:30:30,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:30:30,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:30:30,968 INFO L321 Elim1Store]: treesize reduction 49, result has 33.8 percent of original size [2022-11-18 18:30:30,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 35 [2022-11-18 18:30:30,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2022-11-18 18:30:31,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:30:31,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 18:30:31,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:30:31,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 18:30:31,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:31,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:30:31,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:30:31,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636695601] [2022-11-18 18:30:31,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [636695601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:31,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:31,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:30:31,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985253015] [2022-11-18 18:30:31,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:31,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:30:31,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:30:31,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:30:31,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:30:31,145 INFO L87 Difference]: Start difference. First operand 2066 states and 7045 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:31,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:30:31,586 INFO L93 Difference]: Finished difference Result 1998 states and 6850 transitions. [2022-11-18 18:30:31,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:30:31,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 18:30:31,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:30:31,593 INFO L225 Difference]: With dead ends: 1998 [2022-11-18 18:30:31,593 INFO L226 Difference]: Without dead ends: 1998 [2022-11-18 18:30:31,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:30:31,594 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 106 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:30:31,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 0 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 2 Unchecked, 0.4s Time] [2022-11-18 18:30:31,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2022-11-18 18:30:31,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1998. [2022-11-18 18:30:31,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1998 states, 1708 states have (on average 4.010538641686183) internal successors, (6850), 1997 states have internal predecessors, (6850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:31,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1998 states to 1998 states and 6850 transitions. [2022-11-18 18:30:31,654 INFO L78 Accepts]: Start accepts. Automaton has 1998 states and 6850 transitions. Word has length 6 [2022-11-18 18:30:31,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:30:31,654 INFO L495 AbstractCegarLoop]: Abstraction has 1998 states and 6850 transitions. [2022-11-18 18:30:31,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:31,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1998 states and 6850 transitions. [2022-11-18 18:30:31,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 18:30:31,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:30:31,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:31,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-18 18:30:31,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:31,869 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:30:31,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:31,869 INFO L85 PathProgramCache]: Analyzing trace with hash -2000182919, now seen corresponding path program 1 times [2022-11-18 18:30:31,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:30:31,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [602084236] [2022-11-18 18:30:31,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:31,870 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:31,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:30:31,871 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:30:31,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-18 18:30:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:32,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:30:32,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:30:32,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:30:32,155 INFO L321 Elim1Store]: treesize reduction 79, result has 27.5 percent of original size [2022-11-18 18:30:32,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 48 [2022-11-18 18:30:32,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:30:32,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:30:32,326 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:30:32,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:30:32,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:30:32,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:30:32,370 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:30:32,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [602084236] [2022-11-18 18:30:32,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [602084236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:32,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:32,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:30:32,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186158005] [2022-11-18 18:30:32,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:32,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:30:32,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:30:32,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:30:32,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:30:32,372 INFO L87 Difference]: Start difference. First operand 1998 states and 6850 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:32,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:30:32,777 INFO L93 Difference]: Finished difference Result 1930 states and 6656 transitions. [2022-11-18 18:30:32,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:30:32,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 18:30:32,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:30:32,783 INFO L225 Difference]: With dead ends: 1930 [2022-11-18 18:30:32,783 INFO L226 Difference]: Without dead ends: 1930 [2022-11-18 18:30:32,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:30:32,784 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 52 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:30:32,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 0 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 1 Unchecked, 0.4s Time] [2022-11-18 18:30:32,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1930 states. [2022-11-18 18:30:32,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1930 to 1926. [2022-11-18 18:30:32,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1926 states, 1668 states have (on average 3.98621103117506) internal successors, (6649), 1925 states have internal predecessors, (6649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:32,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1926 states to 1926 states and 6649 transitions. [2022-11-18 18:30:32,842 INFO L78 Accepts]: Start accepts. Automaton has 1926 states and 6649 transitions. Word has length 7 [2022-11-18 18:30:32,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:30:32,842 INFO L495 AbstractCegarLoop]: Abstraction has 1926 states and 6649 transitions. [2022-11-18 18:30:32,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:32,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1926 states and 6649 transitions. [2022-11-18 18:30:32,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 18:30:32,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:30:32,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:32,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-18 18:30:33,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:33,056 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:30:33,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:33,057 INFO L85 PathProgramCache]: Analyzing trace with hash 6972831, now seen corresponding path program 1 times [2022-11-18 18:30:33,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:30:33,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795333086] [2022-11-18 18:30:33,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:33,058 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:33,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:30:33,059 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:30:33,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-18 18:30:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:33,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:30:33,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:30:33,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:33,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:30:33,271 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:30:33,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795333086] [2022-11-18 18:30:33,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795333086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:33,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:33,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:30:33,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501374841] [2022-11-18 18:30:33,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:33,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:30:33,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:30:33,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:30:33,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:30:33,272 INFO L87 Difference]: Start difference. First operand 1926 states and 6649 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:33,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:30:33,997 INFO L93 Difference]: Finished difference Result 2021 states and 6862 transitions. [2022-11-18 18:30:33,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:30:33,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 18:30:33,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:30:34,007 INFO L225 Difference]: With dead ends: 2021 [2022-11-18 18:30:34,007 INFO L226 Difference]: Without dead ends: 2013 [2022-11-18 18:30:34,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:30:34,008 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:30:34,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 18:30:34,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2022-11-18 18:30:34,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 2011. [2022-11-18 18:30:34,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2011 states, 1747 states have (on average 3.916428162564396) internal successors, (6842), 2010 states have internal predecessors, (6842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:34,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2011 states to 2011 states and 6842 transitions. [2022-11-18 18:30:34,068 INFO L78 Accepts]: Start accepts. Automaton has 2011 states and 6842 transitions. Word has length 7 [2022-11-18 18:30:34,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:30:34,068 INFO L495 AbstractCegarLoop]: Abstraction has 2011 states and 6842 transitions. [2022-11-18 18:30:34,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:34,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2011 states and 6842 transitions. [2022-11-18 18:30:34,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 18:30:34,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:30:34,070 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:34,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-18 18:30:34,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:34,291 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:30:34,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:34,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1876129016, now seen corresponding path program 1 times [2022-11-18 18:30:34,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:30:34,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2082103277] [2022-11-18 18:30:34,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:34,292 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:34,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:30:34,293 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:30:34,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-18 18:30:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:34,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:30:34,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:30:34,575 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:30:34,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:30:34,612 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 18:30:34,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 18:30:34,638 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:30:34,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:30:34,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:30:34,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:30:34,674 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:30:34,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2082103277] [2022-11-18 18:30:34,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2082103277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:34,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:34,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:30:34,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940868252] [2022-11-18 18:30:34,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:34,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:30:34,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:30:34,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:30:34,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:30:34,676 INFO L87 Difference]: Start difference. First operand 2011 states and 6842 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:35,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:30:35,058 INFO L93 Difference]: Finished difference Result 1525 states and 5170 transitions. [2022-11-18 18:30:35,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:30:35,058 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 18:30:35,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:30:35,063 INFO L225 Difference]: With dead ends: 1525 [2022-11-18 18:30:35,064 INFO L226 Difference]: Without dead ends: 1525 [2022-11-18 18:30:35,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:30:35,065 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 92 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:30:35,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 0 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 18:30:35,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1525 states. [2022-11-18 18:30:35,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1525 to 1525. [2022-11-18 18:30:35,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1366 states have (on average 3.7847730600292824) internal successors, (5170), 1524 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:35,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 5170 transitions. [2022-11-18 18:30:35,107 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 5170 transitions. Word has length 8 [2022-11-18 18:30:35,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:30:35,108 INFO L495 AbstractCegarLoop]: Abstraction has 1525 states and 5170 transitions. [2022-11-18 18:30:35,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:35,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 5170 transitions. [2022-11-18 18:30:35,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 18:30:35,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:30:35,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:35,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-11-18 18:30:35,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:35,323 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:30:35,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:35,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1876129015, now seen corresponding path program 1 times [2022-11-18 18:30:35,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:30:35,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1662381919] [2022-11-18 18:30:35,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:35,324 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:35,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:30:35,325 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:30:35,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-18 18:30:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:35,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 18:30:35,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:30:35,704 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 18:30:35,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 18:30:35,869 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:30:35,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:30:36,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:30:36,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:30:36,075 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 18:30:36,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 18:30:36,177 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-18 18:30:36,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-18 18:30:36,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:30:36,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:36,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:30:45,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:45,935 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:30:45,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1662381919] [2022-11-18 18:30:45,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1662381919] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:30:45,935 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:30:45,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2022-11-18 18:30:45,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249183857] [2022-11-18 18:30:45,936 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:30:45,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:30:45,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:30:45,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:30:45,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:30:45,939 INFO L87 Difference]: Start difference. First operand 1525 states and 5170 transitions. Second operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:46,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:30:46,426 INFO L93 Difference]: Finished difference Result 1539 states and 5197 transitions. [2022-11-18 18:30:46,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:30:46,427 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 18:30:46,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:30:46,432 INFO L225 Difference]: With dead ends: 1539 [2022-11-18 18:30:46,432 INFO L226 Difference]: Without dead ends: 1539 [2022-11-18 18:30:46,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:30:46,433 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:30:46,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 107 Unchecked, 0.4s Time] [2022-11-18 18:30:46,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1539 states. [2022-11-18 18:30:46,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1539 to 1535. [2022-11-18 18:30:46,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 1376 states have (on average 3.772529069767442) internal successors, (5191), 1534 states have internal predecessors, (5191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:46,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 5191 transitions. [2022-11-18 18:30:46,471 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 5191 transitions. Word has length 8 [2022-11-18 18:30:46,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:30:46,472 INFO L495 AbstractCegarLoop]: Abstraction has 1535 states and 5191 transitions. [2022-11-18 18:30:46,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:46,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 5191 transitions. [2022-11-18 18:30:46,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 18:30:46,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:30:46,473 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:46,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-18 18:30:46,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:46,688 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:30:46,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:46,688 INFO L85 PathProgramCache]: Analyzing trace with hash 216210753, now seen corresponding path program 1 times [2022-11-18 18:30:46,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:30:46,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127177654] [2022-11-18 18:30:46,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:46,689 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:46,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:30:46,690 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:30:46,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-18 18:30:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:46,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:30:46,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:30:46,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:30:46,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:30:46,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:30:47,009 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-18 18:30:47,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-11-18 18:30:47,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-18 18:30:47,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:30:47,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 18:30:47,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:30:47,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 18:30:47,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:47,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:30:47,215 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:30:47,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127177654] [2022-11-18 18:30:47,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127177654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:47,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:47,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:30:47,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445052304] [2022-11-18 18:30:47,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:47,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:30:47,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:30:47,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:30:47,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:30:47,217 INFO L87 Difference]: Start difference. First operand 1535 states and 5191 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:47,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:30:47,623 INFO L93 Difference]: Finished difference Result 1454 states and 4945 transitions. [2022-11-18 18:30:47,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:30:47,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 18:30:47,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:30:47,628 INFO L225 Difference]: With dead ends: 1454 [2022-11-18 18:30:47,628 INFO L226 Difference]: Without dead ends: 1454 [2022-11-18 18:30:47,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:30:47,629 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 88 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:30:47,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 0 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 4 Unchecked, 0.4s Time] [2022-11-18 18:30:47,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2022-11-18 18:30:47,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1454. [2022-11-18 18:30:47,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1454 states, 1321 states have (on average 3.7433762301286904) internal successors, (4945), 1453 states have internal predecessors, (4945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:47,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 4945 transitions. [2022-11-18 18:30:47,661 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 4945 transitions. Word has length 8 [2022-11-18 18:30:47,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:30:47,661 INFO L495 AbstractCegarLoop]: Abstraction has 1454 states and 4945 transitions. [2022-11-18 18:30:47,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:47,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 4945 transitions. [2022-11-18 18:30:47,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 18:30:47,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:30:47,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:47,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-18 18:30:47,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:47,866 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:30:47,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:47,867 INFO L85 PathProgramCache]: Analyzing trace with hash 216210754, now seen corresponding path program 1 times [2022-11-18 18:30:47,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:30:47,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2036183045] [2022-11-18 18:30:47,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:47,867 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:47,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:30:47,868 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:30:47,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-18 18:30:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:48,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:30:48,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:30:48,112 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-18 18:30:48,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2022-11-18 18:30:48,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:30:48,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:30:48,223 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:30:48,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:30:48,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:48,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:30:48,309 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:30:48,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2036183045] [2022-11-18 18:30:48,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2036183045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:48,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:48,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:30:48,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181501157] [2022-11-18 18:30:48,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:48,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:30:48,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:30:48,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:30:48,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:30:48,311 INFO L87 Difference]: Start difference. First operand 1454 states and 4945 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:48,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:30:48,793 INFO L93 Difference]: Finished difference Result 1464 states and 4965 transitions. [2022-11-18 18:30:48,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:30:48,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 18:30:48,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:30:48,800 INFO L225 Difference]: With dead ends: 1464 [2022-11-18 18:30:48,800 INFO L226 Difference]: Without dead ends: 1464 [2022-11-18 18:30:48,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:30:48,801 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:30:48,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 49 Unchecked, 0.4s Time] [2022-11-18 18:30:48,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2022-11-18 18:30:48,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1464. [2022-11-18 18:30:48,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1331 states have (on average 3.7302779864763336) internal successors, (4965), 1463 states have internal predecessors, (4965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:48,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 4965 transitions. [2022-11-18 18:30:48,840 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 4965 transitions. Word has length 8 [2022-11-18 18:30:48,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:30:48,841 INFO L495 AbstractCegarLoop]: Abstraction has 1464 states and 4965 transitions. [2022-11-18 18:30:48,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:48,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 4965 transitions. [2022-11-18 18:30:48,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 18:30:48,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:30:48,842 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:48,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-18 18:30:49,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:49,055 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:30:49,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:49,055 INFO L85 PathProgramCache]: Analyzing trace with hash -122744219, now seen corresponding path program 1 times [2022-11-18 18:30:49,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:30:49,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123676495] [2022-11-18 18:30:49,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:49,056 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:49,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:30:49,063 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:30:49,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-18 18:30:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:49,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 18:30:49,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:30:49,537 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 18:30:49,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 18:30:49,722 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:30:49,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:30:49,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:30:49,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2022-11-18 18:30:49,967 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 18:30:49,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 18:30:50,090 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:30:50,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 23 [2022-11-18 18:30:50,155 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-18 18:30:50,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-18 18:30:50,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:50,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:31:05,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:05,216 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:31:05,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123676495] [2022-11-18 18:31:05,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123676495] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:31:05,216 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:31:05,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2022-11-18 18:31:05,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346465462] [2022-11-18 18:31:05,216 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:31:05,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 18:31:05,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:31:05,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 18:31:05,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=117, Unknown=1, NotChecked=0, Total=156 [2022-11-18 18:31:05,218 INFO L87 Difference]: Start difference. First operand 1464 states and 4965 transitions. Second operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:11,050 WARN L233 SmtUtils]: Spent 5.48s on a formula simplification that was a NOOP. DAG size: 59 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:31:12,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:31:12,106 INFO L93 Difference]: Finished difference Result 1471 states and 4977 transitions. [2022-11-18 18:31:12,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:31:12,107 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 18:31:12,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:31:12,112 INFO L225 Difference]: With dead ends: 1471 [2022-11-18 18:31:12,112 INFO L226 Difference]: Without dead ends: 1471 [2022-11-18 18:31:12,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 20.1s TimeCoverageRelationStatistics Valid=52, Invalid=157, Unknown=1, NotChecked=0, Total=210 [2022-11-18 18:31:12,114 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 285 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:31:12,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 221 Invalid, 0 Unknown, 285 Unchecked, 1.0s Time] [2022-11-18 18:31:12,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2022-11-18 18:31:12,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1464. [2022-11-18 18:31:12,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1331 states have (on average 3.7302779864763336) internal successors, (4965), 1463 states have internal predecessors, (4965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:12,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 4965 transitions. [2022-11-18 18:31:12,151 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 4965 transitions. Word has length 9 [2022-11-18 18:31:12,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:31:12,151 INFO L495 AbstractCegarLoop]: Abstraction has 1464 states and 4965 transitions. [2022-11-18 18:31:12,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:12,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 4965 transitions. [2022-11-18 18:31:12,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 18:31:12,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:31:12,152 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:12,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-11-18 18:31:12,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:31:12,353 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:31:12,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:12,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1969543988, now seen corresponding path program 1 times [2022-11-18 18:31:12,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:31:12,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306208884] [2022-11-18 18:31:12,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:12,354 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:31:12,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:31:12,355 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:31:12,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-18 18:31:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:12,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:31:12,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:31:12,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:31:12,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:31:12,547 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:31:12,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306208884] [2022-11-18 18:31:12,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306208884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:12,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:12,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:31:12,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021156574] [2022-11-18 18:31:12,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:12,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:31:12,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:31:12,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:31:12,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:31:12,549 INFO L87 Difference]: Start difference. First operand 1464 states and 4965 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:13,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:31:13,826 INFO L93 Difference]: Finished difference Result 3190 states and 11164 transitions. [2022-11-18 18:31:13,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:31:13,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 18:31:13,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:31:13,840 INFO L225 Difference]: With dead ends: 3190 [2022-11-18 18:31:13,840 INFO L226 Difference]: Without dead ends: 3188 [2022-11-18 18:31:13,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:31:13,841 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 97 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:31:13,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 0 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 18:31:13,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3188 states. [2022-11-18 18:31:13,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3188 to 1836. [2022-11-18 18:31:13,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1836 states, 1688 states have (on average 3.9970379146919433) internal successors, (6747), 1835 states have internal predecessors, (6747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:13,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 6747 transitions. [2022-11-18 18:31:13,906 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 6747 transitions. Word has length 9 [2022-11-18 18:31:13,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:31:13,906 INFO L495 AbstractCegarLoop]: Abstraction has 1836 states and 6747 transitions. [2022-11-18 18:31:13,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:13,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 6747 transitions. [2022-11-18 18:31:13,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 18:31:13,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:31:13,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:13,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-18 18:31:14,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:31:14,119 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:31:14,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:14,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1969542350, now seen corresponding path program 1 times [2022-11-18 18:31:14,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:31:14,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582185876] [2022-11-18 18:31:14,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:14,120 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:31:14,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:31:14,121 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:31:14,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-18 18:31:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:14,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 18:31:14,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:31:14,580 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 18:31:14,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 18:31:14,818 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:31:14,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:31:15,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:31:15,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:31:15,077 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 18:31:15,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 18:31:15,205 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:31:15,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:31:15,253 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-18 18:31:15,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-18 18:31:15,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:15,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:31:20,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:20,261 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:31:20,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582185876] [2022-11-18 18:31:20,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582185876] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:31:20,261 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:31:20,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2022-11-18 18:31:20,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663071878] [2022-11-18 18:31:20,261 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:31:20,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:20,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:31:20,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:20,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:20,263 INFO L87 Difference]: Start difference. First operand 1836 states and 6747 transitions. Second operand has 11 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:20,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:31:20,839 INFO L93 Difference]: Finished difference Result 1867 states and 6811 transitions. [2022-11-18 18:31:20,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:31:20,840 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 18:31:20,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:31:20,845 INFO L225 Difference]: With dead ends: 1867 [2022-11-18 18:31:20,846 INFO L226 Difference]: Without dead ends: 1867 [2022-11-18 18:31:20,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:31:20,846 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 268 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:31:20,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 268 Unchecked, 0.5s Time] [2022-11-18 18:31:20,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1867 states. [2022-11-18 18:31:20,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1867 to 1854. [2022-11-18 18:31:20,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1854 states, 1706 states have (on average 3.9835873388042202) internal successors, (6796), 1853 states have internal predecessors, (6796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:20,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1854 states to 1854 states and 6796 transitions. [2022-11-18 18:31:20,892 INFO L78 Accepts]: Start accepts. Automaton has 1854 states and 6796 transitions. Word has length 9 [2022-11-18 18:31:20,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:31:20,893 INFO L495 AbstractCegarLoop]: Abstraction has 1854 states and 6796 transitions. [2022-11-18 18:31:20,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:20,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1854 states and 6796 transitions. [2022-11-18 18:31:20,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 18:31:20,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:31:20,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:20,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-18 18:31:21,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:31:21,094 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:31:21,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:21,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1950547162, now seen corresponding path program 1 times [2022-11-18 18:31:21,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:31:21,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854140390] [2022-11-18 18:31:21,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:21,095 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:31:21,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:31:21,097 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:31:21,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-18 18:31:21,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:21,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 18:31:21,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:31:21,599 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 18:31:21,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 18:31:21,810 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:31:21,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:31:21,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:31:21,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:31:22,007 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:31:22,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:31:22,099 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-11-18 18:31:22,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-18 18:31:22,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:22,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:31:24,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:24,966 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:31:24,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854140390] [2022-11-18 18:31:24,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854140390] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:31:24,966 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:31:24,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 11 [2022-11-18 18:31:24,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152387093] [2022-11-18 18:31:24,966 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:31:24,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 18:31:24,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:31:24,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 18:31:24,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:31:24,967 INFO L87 Difference]: Start difference. First operand 1854 states and 6796 transitions. Second operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:25,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:31:25,574 INFO L93 Difference]: Finished difference Result 1874 states and 6835 transitions. [2022-11-18 18:31:25,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:31:25,575 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 18:31:25,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:31:25,581 INFO L225 Difference]: With dead ends: 1874 [2022-11-18 18:31:25,581 INFO L226 Difference]: Without dead ends: 1874 [2022-11-18 18:31:25,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:31:25,582 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 178 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:31:25,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 178 Unchecked, 0.6s Time] [2022-11-18 18:31:25,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2022-11-18 18:31:25,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 1866. [2022-11-18 18:31:25,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1718 states have (on average 3.9726426076833525) internal successors, (6825), 1865 states have internal predecessors, (6825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:25,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 6825 transitions. [2022-11-18 18:31:25,630 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 6825 transitions. Word has length 9 [2022-11-18 18:31:25,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:31:25,631 INFO L495 AbstractCegarLoop]: Abstraction has 1866 states and 6825 transitions. [2022-11-18 18:31:25,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:25,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 6825 transitions. [2022-11-18 18:31:25,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 18:31:25,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:31:25,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:25,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-18 18:31:25,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:31:25,845 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:31:25,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:25,846 INFO L85 PathProgramCache]: Analyzing trace with hash 183851489, now seen corresponding path program 1 times [2022-11-18 18:31:25,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:31:25,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1117379451] [2022-11-18 18:31:25,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:25,846 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:31:25,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:31:25,848 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:31:25,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-18 18:31:26,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:26,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 18:31:26,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:31:26,335 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 18:31:26,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 18:31:26,556 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:31:26,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:31:26,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:31:26,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:31:26,790 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 18:31:26,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 18:31:26,933 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-18 18:31:26,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-18 18:31:26,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:31:27,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:31:27,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:31:37,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:31:37,226 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:31:37,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1117379451] [2022-11-18 18:31:37,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1117379451] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:31:37,226 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:31:37,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2022-11-18 18:31:37,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253288173] [2022-11-18 18:31:37,227 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:31:37,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:37,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:31:37,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:37,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:37,228 INFO L87 Difference]: Start difference. First operand 1866 states and 6825 transitions. Second operand has 11 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:37,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:31:37,973 INFO L93 Difference]: Finished difference Result 1900 states and 6893 transitions. [2022-11-18 18:31:37,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:31:37,974 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 18:31:37,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:31:37,980 INFO L225 Difference]: With dead ends: 1900 [2022-11-18 18:31:37,980 INFO L226 Difference]: Without dead ends: 1900 [2022-11-18 18:31:37,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:31:37,981 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 177 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:31:37,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 131 Invalid, 0 Unknown, 177 Unchecked, 0.7s Time] [2022-11-18 18:31:37,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1900 states. [2022-11-18 18:31:38,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1900 to 1882. [2022-11-18 18:31:38,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1734 states have (on average 3.955594002306805) internal successors, (6859), 1881 states have internal predecessors, (6859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:38,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 6859 transitions. [2022-11-18 18:31:38,031 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 6859 transitions. Word has length 9 [2022-11-18 18:31:38,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:31:38,032 INFO L495 AbstractCegarLoop]: Abstraction has 1882 states and 6859 transitions. [2022-11-18 18:31:38,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:38,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 6859 transitions. [2022-11-18 18:31:38,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 18:31:38,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:31:38,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:38,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-11-18 18:31:38,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:31:38,246 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:31:38,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:38,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1889061781, now seen corresponding path program 1 times [2022-11-18 18:31:38,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:31:38,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015578575] [2022-11-18 18:31:38,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:38,247 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:31:38,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:31:38,248 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:31:38,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-18 18:31:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:38,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 18:31:38,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:31:38,528 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-18 18:31:38,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2022-11-18 18:31:38,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:31:38,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:31:38,668 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:31:38,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:31:38,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:38,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:31:38,779 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:31:38,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015578575] [2022-11-18 18:31:38,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015578575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:38,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:38,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:31:38,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12311520] [2022-11-18 18:31:38,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:38,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:31:38,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:31:38,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:31:38,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:31:38,781 INFO L87 Difference]: Start difference. First operand 1882 states and 6859 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:39,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:31:39,196 INFO L93 Difference]: Finished difference Result 1891 states and 6889 transitions. [2022-11-18 18:31:39,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:31:39,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 18:31:39,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:31:39,202 INFO L225 Difference]: With dead ends: 1891 [2022-11-18 18:31:39,202 INFO L226 Difference]: Without dead ends: 1891 [2022-11-18 18:31:39,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:31:39,203 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:31:39,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 49 Unchecked, 0.4s Time] [2022-11-18 18:31:39,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2022-11-18 18:31:39,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1891. [2022-11-18 18:31:39,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1743 states have (on average 3.9523809523809526) internal successors, (6889), 1890 states have internal predecessors, (6889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:39,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 6889 transitions. [2022-11-18 18:31:39,248 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 6889 transitions. Word has length 9 [2022-11-18 18:31:39,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:31:39,248 INFO L495 AbstractCegarLoop]: Abstraction has 1891 states and 6889 transitions. [2022-11-18 18:31:39,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:39,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 6889 transitions. [2022-11-18 18:31:39,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 18:31:39,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:31:39,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:39,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-11-18 18:31:39,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:31:39,462 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:31:39,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:39,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1887403901, now seen corresponding path program 1 times [2022-11-18 18:31:39,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:31:39,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287609127] [2022-11-18 18:31:39,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:39,463 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:31:39,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:31:39,464 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:31:39,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-18 18:31:39,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:39,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:31:39,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:31:39,713 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-18 18:31:39,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2022-11-18 18:31:39,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:31:39,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:31:39,815 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:31:39,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:31:39,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:39,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:31:39,899 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:31:39,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287609127] [2022-11-18 18:31:39,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287609127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:39,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:39,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:31:39,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097410631] [2022-11-18 18:31:39,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:39,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:31:39,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:31:39,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:31:39,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:31:39,900 INFO L87 Difference]: Start difference. First operand 1891 states and 6889 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:40,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:31:40,306 INFO L93 Difference]: Finished difference Result 1893 states and 6897 transitions. [2022-11-18 18:31:40,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:31:40,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 18:31:40,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:31:40,315 INFO L225 Difference]: With dead ends: 1893 [2022-11-18 18:31:40,315 INFO L226 Difference]: Without dead ends: 1893 [2022-11-18 18:31:40,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:31:40,316 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:31:40,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 49 Unchecked, 0.4s Time] [2022-11-18 18:31:40,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2022-11-18 18:31:40,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1893. [2022-11-18 18:31:40,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1745 states have (on average 3.95243553008596) internal successors, (6897), 1892 states have internal predecessors, (6897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:40,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 6897 transitions. [2022-11-18 18:31:40,360 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 6897 transitions. Word has length 9 [2022-11-18 18:31:40,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:31:40,361 INFO L495 AbstractCegarLoop]: Abstraction has 1893 states and 6897 transitions. [2022-11-18 18:31:40,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:40,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 6897 transitions. [2022-11-18 18:31:40,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 18:31:40,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:31:40,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:40,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-11-18 18:31:40,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:31:40,574 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:31:40,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:40,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1817116191, now seen corresponding path program 1 times [2022-11-18 18:31:40,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:31:40,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309519473] [2022-11-18 18:31:40,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:40,575 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:31:40,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:31:40,577 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:31:40,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-18 18:31:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:40,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:31:40,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:31:40,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:31:40,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:31:40,884 INFO L321 Elim1Store]: treesize reduction 89, result has 14.4 percent of original size [2022-11-18 18:31:40,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 40 [2022-11-18 18:31:41,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:31:41,118 INFO L321 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2022-11-18 18:31:41,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 52 [2022-11-18 18:31:41,925 INFO L321 Elim1Store]: treesize reduction 78, result has 22.0 percent of original size [2022-11-18 18:31:41,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 44 [2022-11-18 18:31:42,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:31:42,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:31:42,635 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:31:42,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309519473] [2022-11-18 18:31:42,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309519473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:42,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:42,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:31:42,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889479938] [2022-11-18 18:31:42,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:42,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:31:42,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:31:42,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:31:42,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:31:42,637 INFO L87 Difference]: Start difference. First operand 1893 states and 6897 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:42,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:31:42,938 INFO L93 Difference]: Finished difference Result 1904 states and 6920 transitions. [2022-11-18 18:31:42,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:31:42,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 18:31:42,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:31:42,945 INFO L225 Difference]: With dead ends: 1904 [2022-11-18 18:31:42,946 INFO L226 Difference]: Without dead ends: 1904 [2022-11-18 18:31:42,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:31:42,946 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:31:42,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 50 Unchecked, 0.3s Time] [2022-11-18 18:31:42,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1904 states. [2022-11-18 18:31:42,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1904 to 1904. [2022-11-18 18:31:42,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1904 states, 1756 states have (on average 3.940774487471526) internal successors, (6920), 1903 states have internal predecessors, (6920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:42,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 6920 transitions. [2022-11-18 18:31:42,999 INFO L78 Accepts]: Start accepts. Automaton has 1904 states and 6920 transitions. Word has length 9 [2022-11-18 18:31:43,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:31:43,000 INFO L495 AbstractCegarLoop]: Abstraction has 1904 states and 6920 transitions. [2022-11-18 18:31:43,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:43,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1904 states and 6920 transitions. [2022-11-18 18:31:43,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 18:31:43,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:31:43,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:43,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-18 18:31:43,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:31:43,214 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:31:43,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:43,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1410842120, now seen corresponding path program 1 times [2022-11-18 18:31:43,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:31:43,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614663454] [2022-11-18 18:31:43,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:43,215 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:31:43,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:31:43,216 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:31:43,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-18 18:31:43,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:43,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 18:31:43,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:31:43,511 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-18 18:31:43,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2022-11-18 18:31:43,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:31:43,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:31:43,665 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:31:43,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:31:43,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:31:43,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:31:43,761 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:31:43,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614663454] [2022-11-18 18:31:43,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614663454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:43,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:43,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:31:43,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211666268] [2022-11-18 18:31:43,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:43,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:31:43,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:31:43,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:31:43,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:31:43,763 INFO L87 Difference]: Start difference. First operand 1904 states and 6920 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:44,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:31:44,242 INFO L93 Difference]: Finished difference Result 1916 states and 6942 transitions. [2022-11-18 18:31:44,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:31:44,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 18:31:44,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:31:44,248 INFO L225 Difference]: With dead ends: 1916 [2022-11-18 18:31:44,248 INFO L226 Difference]: Without dead ends: 1916 [2022-11-18 18:31:44,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:31:44,249 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:31:44,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 49 Unchecked, 0.4s Time] [2022-11-18 18:31:44,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2022-11-18 18:31:44,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1912. [2022-11-18 18:31:44,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1912 states, 1764 states have (on average 3.930839002267574) internal successors, (6934), 1911 states have internal predecessors, (6934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:44,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 6934 transitions. [2022-11-18 18:31:44,301 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 6934 transitions. Word has length 9 [2022-11-18 18:31:44,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:31:44,302 INFO L495 AbstractCegarLoop]: Abstraction has 1912 states and 6934 transitions. [2022-11-18 18:31:44,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:44,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 6934 transitions. [2022-11-18 18:31:44,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 18:31:44,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:31:44,303 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:44,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-11-18 18:31:44,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:31:44,516 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:31:44,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:44,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1602387479, now seen corresponding path program 2 times [2022-11-18 18:31:44,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:31:44,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [562556655] [2022-11-18 18:31:44,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:31:44,517 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:31:44,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:31:44,518 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:31:44,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-18 18:31:44,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:31:44,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:31:44,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 18:31:44,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:31:44,963 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 18:31:44,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 18:31:45,161 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:31:45,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:31:45,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:31:45,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:31:45,343 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 18:31:45,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 18:31:45,449 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:31:45,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:31:45,507 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-18 18:31:45,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-18 18:31:45,609 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 18:31:45,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:31:45,609 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:31:45,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [562556655] [2022-11-18 18:31:45,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [562556655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:45,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:45,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:31:45,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417642494] [2022-11-18 18:31:45,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:45,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:31:45,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:31:45,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:31:45,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:31:45,611 INFO L87 Difference]: Start difference. First operand 1912 states and 6934 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:46,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:31:46,668 INFO L93 Difference]: Finished difference Result 3248 states and 11830 transitions. [2022-11-18 18:31:46,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:31:46,668 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-18 18:31:46,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:31:46,682 INFO L225 Difference]: With dead ends: 3248 [2022-11-18 18:31:46,683 INFO L226 Difference]: Without dead ends: 3248 [2022-11-18 18:31:46,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:31:46,683 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 41 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:31:46,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 0 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 140 Invalid, 0 Unknown, 89 Unchecked, 1.0s Time] [2022-11-18 18:31:46,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3248 states. [2022-11-18 18:31:46,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3248 to 2905. [2022-11-18 18:31:46,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2905 states, 2757 states have (on average 4.064200217627857) internal successors, (11205), 2904 states have internal predecessors, (11205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:46,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2905 states to 2905 states and 11205 transitions. [2022-11-18 18:31:46,771 INFO L78 Accepts]: Start accepts. Automaton has 2905 states and 11205 transitions. Word has length 10 [2022-11-18 18:31:46,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:31:46,772 INFO L495 AbstractCegarLoop]: Abstraction has 2905 states and 11205 transitions. [2022-11-18 18:31:46,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:46,772 INFO L276 IsEmpty]: Start isEmpty. Operand 2905 states and 11205 transitions. [2022-11-18 18:31:46,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 18:31:46,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:31:46,773 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:46,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-18 18:31:46,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:31:46,987 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:31:46,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:46,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1295791953, now seen corresponding path program 1 times [2022-11-18 18:31:46,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:31:46,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416389848] [2022-11-18 18:31:46,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:46,988 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:31:46,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:31:46,989 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:31:46,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-18 18:31:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:47,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 18:31:47,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:31:47,464 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 18:31:47,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 18:31:47,696 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:31:47,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:31:47,988 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 18:31:47,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 18:31:48,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2022-11-18 18:31:48,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:31:48,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:31:48,155 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:31:48,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:31:48,275 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:31:48,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:31:59,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:31:59,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:31:59,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1416389848] [2022-11-18 18:31:59,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1416389848] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:31:59,092 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:31:59,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-18 18:31:59,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117863477] [2022-11-18 18:31:59,092 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:31:59,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:31:59,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:31:59,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:31:59,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:31:59,093 INFO L87 Difference]: Start difference. First operand 2905 states and 11205 transitions. Second operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:02,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:02,439 INFO L93 Difference]: Finished difference Result 2930 states and 11257 transitions. [2022-11-18 18:32:02,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:32:02,440 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-18 18:32:02,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:02,448 INFO L225 Difference]: With dead ends: 2930 [2022-11-18 18:32:02,448 INFO L226 Difference]: Without dead ends: 2930 [2022-11-18 18:32:02,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:32:02,449 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 226 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:02,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 226 Unchecked, 0.5s Time] [2022-11-18 18:32:02,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2022-11-18 18:32:02,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 2918. [2022-11-18 18:32:02,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2918 states, 2770 states have (on average 4.055595667870036) internal successors, (11234), 2917 states have internal predecessors, (11234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:02,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2918 states to 2918 states and 11234 transitions. [2022-11-18 18:32:02,504 INFO L78 Accepts]: Start accepts. Automaton has 2918 states and 11234 transitions. Word has length 10 [2022-11-18 18:32:02,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:02,504 INFO L495 AbstractCegarLoop]: Abstraction has 2918 states and 11234 transitions. [2022-11-18 18:32:02,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:02,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2918 states and 11234 transitions. [2022-11-18 18:32:02,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 18:32:02,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:02,505 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:02,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-18 18:32:02,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:32:02,706 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:32:02,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:02,706 INFO L85 PathProgramCache]: Analyzing trace with hash 927920008, now seen corresponding path program 1 times [2022-11-18 18:32:02,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:32:02,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57668556] [2022-11-18 18:32:02,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:02,707 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:32:02,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:32:02,709 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:32:02,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-18 18:32:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:02,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:32:02,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:02,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:32:02,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:32:02,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:32:02,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57668556] [2022-11-18 18:32:02,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57668556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:02,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:02,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:32:02,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268982984] [2022-11-18 18:32:02,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:02,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:32:02,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:32:02,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:32:02,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:32:02,913 INFO L87 Difference]: Start difference. First operand 2918 states and 11234 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:03,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:03,544 INFO L93 Difference]: Finished difference Result 3353 states and 12731 transitions. [2022-11-18 18:32:03,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:32:03,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-18 18:32:03,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:03,554 INFO L225 Difference]: With dead ends: 3353 [2022-11-18 18:32:03,555 INFO L226 Difference]: Without dead ends: 3345 [2022-11-18 18:32:03,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:32:03,555 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:03,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 18:32:03,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3345 states. [2022-11-18 18:32:03,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3345 to 3265. [2022-11-18 18:32:03,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3265 states, 3090 states have (on average 4.062135922330097) internal successors, (12552), 3264 states have internal predecessors, (12552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:03,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3265 states to 3265 states and 12552 transitions. [2022-11-18 18:32:03,620 INFO L78 Accepts]: Start accepts. Automaton has 3265 states and 12552 transitions. Word has length 10 [2022-11-18 18:32:03,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:03,620 INFO L495 AbstractCegarLoop]: Abstraction has 3265 states and 12552 transitions. [2022-11-18 18:32:03,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:03,620 INFO L276 IsEmpty]: Start isEmpty. Operand 3265 states and 12552 transitions. [2022-11-18 18:32:03,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 18:32:03,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:03,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:03,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-11-18 18:32:03,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:32:03,833 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:32:03,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:03,834 INFO L85 PathProgramCache]: Analyzing trace with hash 337472840, now seen corresponding path program 1 times [2022-11-18 18:32:03,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:32:03,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667286408] [2022-11-18 18:32:03,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:03,835 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:32:03,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:32:03,836 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:32:03,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-18 18:32:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:04,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:32:04,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:04,196 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-18 18:32:04,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2022-11-18 18:32:04,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:04,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:32:04,321 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:32:04,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:32:04,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:32:04,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:32:04,439 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:32:04,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667286408] [2022-11-18 18:32:04,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667286408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:04,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:04,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:32:04,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644087892] [2022-11-18 18:32:04,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:04,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:32:04,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:32:04,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:32:04,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:32:04,441 INFO L87 Difference]: Start difference. First operand 3265 states and 12552 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:04,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:04,893 INFO L93 Difference]: Finished difference Result 3268 states and 12557 transitions. [2022-11-18 18:32:04,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:32:04,894 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-18 18:32:04,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:04,904 INFO L225 Difference]: With dead ends: 3268 [2022-11-18 18:32:04,905 INFO L226 Difference]: Without dead ends: 3268 [2022-11-18 18:32:04,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:32:04,906 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:04,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 49 Unchecked, 0.4s Time] [2022-11-18 18:32:04,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3268 states. [2022-11-18 18:32:04,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3268 to 3264. [2022-11-18 18:32:04,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3264 states, 3089 states have (on average 4.062479766914859) internal successors, (12549), 3263 states have internal predecessors, (12549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:04,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3264 states to 3264 states and 12549 transitions. [2022-11-18 18:32:04,978 INFO L78 Accepts]: Start accepts. Automaton has 3264 states and 12549 transitions. Word has length 10 [2022-11-18 18:32:04,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:04,978 INFO L495 AbstractCegarLoop]: Abstraction has 3264 states and 12549 transitions. [2022-11-18 18:32:04,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:04,979 INFO L276 IsEmpty]: Start isEmpty. Operand 3264 states and 12549 transitions. [2022-11-18 18:32:04,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 18:32:04,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:04,979 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:04,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-18 18:32:05,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:32:05,180 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:32:05,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:05,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1404428534, now seen corresponding path program 1 times [2022-11-18 18:32:05,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:32:05,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059807036] [2022-11-18 18:32:05,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:05,181 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:32:05,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:32:05,182 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:32:05,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-18 18:32:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:05,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 18:32:05,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:05,667 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 18:32:05,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 18:32:05,861 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:32:05,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:32:06,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:06,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:32:06,133 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 18:32:06,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 18:32:06,325 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:32:06,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:32:06,387 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-18 18:32:06,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-18 18:32:06,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:32:06,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:32:22,125 WARN L233 SmtUtils]: Spent 6.14s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:32:22,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:32:22,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:32:22,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059807036] [2022-11-18 18:32:22,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1059807036] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:32:22,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:32:22,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2022-11-18 18:32:22,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408584656] [2022-11-18 18:32:22,127 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:32:22,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:32:22,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:32:22,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:32:22,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:32:22,129 INFO L87 Difference]: Start difference. First operand 3264 states and 12549 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:22,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:22,781 INFO L93 Difference]: Finished difference Result 3343 states and 12720 transitions. [2022-11-18 18:32:22,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:32:22,782 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-18 18:32:22,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:22,792 INFO L225 Difference]: With dead ends: 3343 [2022-11-18 18:32:22,792 INFO L226 Difference]: Without dead ends: 3343 [2022-11-18 18:32:22,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:32:22,793 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 219 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:22,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 219 Unchecked, 0.6s Time] [2022-11-18 18:32:22,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-11-18 18:32:22,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3278. [2022-11-18 18:32:22,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 3103 states have (on average 4.05768611021592) internal successors, (12591), 3277 states have internal predecessors, (12591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:22,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 12591 transitions. [2022-11-18 18:32:22,870 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 12591 transitions. Word has length 10 [2022-11-18 18:32:22,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:22,871 INFO L495 AbstractCegarLoop]: Abstraction has 3278 states and 12591 transitions. [2022-11-18 18:32:22,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:22,871 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 12591 transitions. [2022-11-18 18:32:22,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 18:32:22,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:22,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:22,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-11-18 18:32:23,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:32:23,086 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:32:23,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:23,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1385433346, now seen corresponding path program 1 times [2022-11-18 18:32:23,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:32:23,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967088032] [2022-11-18 18:32:23,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:23,087 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:32:23,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:32:23,088 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:32:23,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-18 18:32:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:23,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-18 18:32:23,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:23,621 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 18:32:23,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 18:32:23,824 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:32:23,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:32:23,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:23,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:32:24,006 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:32:24,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:32:24,129 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-11-18 18:32:24,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-18 18:32:24,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:32:24,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:32:28,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:32:28,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:32:28,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [967088032] [2022-11-18 18:32:28,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [967088032] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:32:28,728 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:32:28,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 11 [2022-11-18 18:32:28,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988432244] [2022-11-18 18:32:28,728 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:32:28,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 18:32:28,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:32:28,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 18:32:28,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:32:28,729 INFO L87 Difference]: Start difference. First operand 3278 states and 12591 transitions. Second operand has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:30,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:30,030 INFO L93 Difference]: Finished difference Result 5869 states and 22845 transitions. [2022-11-18 18:32:30,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:32:30,031 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-18 18:32:30,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:30,052 INFO L225 Difference]: With dead ends: 5869 [2022-11-18 18:32:30,052 INFO L226 Difference]: Without dead ends: 5869 [2022-11-18 18:32:30,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:32:30,053 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 112 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 432 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:30,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 0 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 251 Invalid, 0 Unknown, 432 Unchecked, 1.3s Time] [2022-11-18 18:32:30,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5869 states. [2022-11-18 18:32:30,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5869 to 3288. [2022-11-18 18:32:30,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3288 states, 3113 states have (on average 4.05171859942178) internal successors, (12613), 3287 states have internal predecessors, (12613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:30,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3288 states to 3288 states and 12613 transitions. [2022-11-18 18:32:30,142 INFO L78 Accepts]: Start accepts. Automaton has 3288 states and 12613 transitions. Word has length 10 [2022-11-18 18:32:30,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:30,142 INFO L495 AbstractCegarLoop]: Abstraction has 3288 states and 12613 transitions. [2022-11-18 18:32:30,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:30,143 INFO L276 IsEmpty]: Start isEmpty. Operand 3288 states and 12613 transitions. [2022-11-18 18:32:30,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 18:32:30,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:30,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:30,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-18 18:32:30,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:32:30,345 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:32:30,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:30,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1568624250, now seen corresponding path program 1 times [2022-11-18 18:32:30,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:32:30,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812377212] [2022-11-18 18:32:30,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:30,346 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:32:30,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:32:30,347 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:32:30,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-18 18:32:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:30,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:32:30,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:30,658 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-18 18:32:30,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2022-11-18 18:32:30,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:30,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:32:30,787 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:32:30,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:32:30,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:30,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:32:30,924 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:32:30,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812377212] [2022-11-18 18:32:30,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812377212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:30,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:30,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:32:30,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973306401] [2022-11-18 18:32:30,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:30,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:32:30,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:32:30,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:32:30,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:32:30,926 INFO L87 Difference]: Start difference. First operand 3288 states and 12613 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:31,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:31,353 INFO L93 Difference]: Finished difference Result 3290 states and 12617 transitions. [2022-11-18 18:32:31,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:32:31,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-18 18:32:31,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:31,364 INFO L225 Difference]: With dead ends: 3290 [2022-11-18 18:32:31,364 INFO L226 Difference]: Without dead ends: 3290 [2022-11-18 18:32:31,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:32:31,365 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:31,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 49 Unchecked, 0.4s Time] [2022-11-18 18:32:31,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3290 states. [2022-11-18 18:32:31,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3290 to 3290. [2022-11-18 18:32:31,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3290 states, 3115 states have (on average 4.0504012841091495) internal successors, (12617), 3289 states have internal predecessors, (12617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:31,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3290 states to 3290 states and 12617 transitions. [2022-11-18 18:32:31,427 INFO L78 Accepts]: Start accepts. Automaton has 3290 states and 12617 transitions. Word has length 10 [2022-11-18 18:32:31,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:31,427 INFO L495 AbstractCegarLoop]: Abstraction has 3290 states and 12617 transitions. [2022-11-18 18:32:31,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:31,427 INFO L276 IsEmpty]: Start isEmpty. Operand 3290 states and 12617 transitions. [2022-11-18 18:32:31,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 18:32:31,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:31,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:31,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-18 18:32:31,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:32:31,628 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:32:31,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:31,629 INFO L85 PathProgramCache]: Analyzing trace with hash 494366510, now seen corresponding path program 1 times [2022-11-18 18:32:31,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:32:31,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053135516] [2022-11-18 18:32:31,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:31,629 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:32:31,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:32:31,630 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:32:31,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-18 18:32:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:31,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:32:31,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:31,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:31,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:31,948 INFO L321 Elim1Store]: treesize reduction 89, result has 14.4 percent of original size [2022-11-18 18:32:31,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 40 [2022-11-18 18:32:32,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:32,133 INFO L321 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2022-11-18 18:32:32,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 52 [2022-11-18 18:32:32,822 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:32:32,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:32:33,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:32:33,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:32:33,092 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:32:33,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053135516] [2022-11-18 18:32:33,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2053135516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:33,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:33,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:32:33,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558868513] [2022-11-18 18:32:33,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:33,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:32:33,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:32:33,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:32:33,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:32:33,094 INFO L87 Difference]: Start difference. First operand 3290 states and 12617 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:33,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:33,377 INFO L93 Difference]: Finished difference Result 3297 states and 12629 transitions. [2022-11-18 18:32:33,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:32:33,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-18 18:32:33,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:33,387 INFO L225 Difference]: With dead ends: 3297 [2022-11-18 18:32:33,387 INFO L226 Difference]: Without dead ends: 3297 [2022-11-18 18:32:33,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:32:33,388 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:33,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 50 Unchecked, 0.3s Time] [2022-11-18 18:32:33,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3297 states. [2022-11-18 18:32:33,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3297 to 3297. [2022-11-18 18:32:33,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3297 states, 3122 states have (on average 4.04516335682255) internal successors, (12629), 3296 states have internal predecessors, (12629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:33,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3297 states to 3297 states and 12629 transitions. [2022-11-18 18:32:33,454 INFO L78 Accepts]: Start accepts. Automaton has 3297 states and 12629 transitions. Word has length 10 [2022-11-18 18:32:33,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:33,454 INFO L495 AbstractCegarLoop]: Abstraction has 3297 states and 12629 transitions. [2022-11-18 18:32:33,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:33,454 INFO L276 IsEmpty]: Start isEmpty. Operand 3297 states and 12629 transitions. [2022-11-18 18:32:33,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 18:32:33,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:33,455 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:33,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-18 18:32:33,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:32:33,658 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:32:33,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:33,658 INFO L85 PathProgramCache]: Analyzing trace with hash 496024390, now seen corresponding path program 1 times [2022-11-18 18:32:33,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:32:33,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961250076] [2022-11-18 18:32:33,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:33,659 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:32:33,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:32:33,660 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:32:33,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-18 18:32:33,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:33,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:32:33,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:33,992 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-18 18:32:33,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2022-11-18 18:32:34,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:34,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:32:34,119 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:32:34,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:32:34,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:32:34,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:32:34,226 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:32:34,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961250076] [2022-11-18 18:32:34,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [961250076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:34,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:34,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:32:34,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000017379] [2022-11-18 18:32:34,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:34,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:32:34,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:32:34,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:32:34,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:32:34,228 INFO L87 Difference]: Start difference. First operand 3297 states and 12629 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:34,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:34,683 INFO L93 Difference]: Finished difference Result 3299 states and 12633 transitions. [2022-11-18 18:32:34,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:32:34,683 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-18 18:32:34,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:34,694 INFO L225 Difference]: With dead ends: 3299 [2022-11-18 18:32:34,694 INFO L226 Difference]: Without dead ends: 3299 [2022-11-18 18:32:34,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:32:34,694 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:34,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 49 Unchecked, 0.4s Time] [2022-11-18 18:32:34,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3299 states. [2022-11-18 18:32:34,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3299 to 3299. [2022-11-18 18:32:34,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3299 states, 3124 states have (on average 4.043854033290653) internal successors, (12633), 3298 states have internal predecessors, (12633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:34,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3299 states to 3299 states and 12633 transitions. [2022-11-18 18:32:34,811 INFO L78 Accepts]: Start accepts. Automaton has 3299 states and 12633 transitions. Word has length 10 [2022-11-18 18:32:34,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:34,811 INFO L495 AbstractCegarLoop]: Abstraction has 3299 states and 12633 transitions. [2022-11-18 18:32:34,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:34,811 INFO L276 IsEmpty]: Start isEmpty. Operand 3299 states and 12633 transitions. [2022-11-18 18:32:34,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 18:32:34,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:34,812 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:34,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-11-18 18:32:35,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:32:35,013 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:32:35,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:35,013 INFO L85 PathProgramCache]: Analyzing trace with hash -788093323, now seen corresponding path program 1 times [2022-11-18 18:32:35,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:32:35,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [307859268] [2022-11-18 18:32:35,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:35,014 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:32:35,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:32:35,015 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:32:35,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-18 18:32:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:35,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:32:35,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:35,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:35,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:35,331 INFO L321 Elim1Store]: treesize reduction 89, result has 14.4 percent of original size [2022-11-18 18:32:35,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 40 [2022-11-18 18:32:35,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:35,530 INFO L321 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2022-11-18 18:32:35,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 52 [2022-11-18 18:32:36,155 INFO L321 Elim1Store]: treesize reduction 42, result has 26.3 percent of original size [2022-11-18 18:32:36,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 32 [2022-11-18 18:32:36,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:32:36,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:32:36,541 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:32:36,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [307859268] [2022-11-18 18:32:36,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [307859268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:36,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:36,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:32:36,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957726237] [2022-11-18 18:32:36,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:36,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:32:36,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:32:36,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:32:36,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:32:36,543 INFO L87 Difference]: Start difference. First operand 3299 states and 12633 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:36,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:36,847 INFO L93 Difference]: Finished difference Result 3302 states and 12637 transitions. [2022-11-18 18:32:36,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:32:36,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-18 18:32:36,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:36,858 INFO L225 Difference]: With dead ends: 3302 [2022-11-18 18:32:36,858 INFO L226 Difference]: Without dead ends: 3302 [2022-11-18 18:32:36,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:32:36,858 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:36,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 50 Unchecked, 0.3s Time] [2022-11-18 18:32:36,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3302 states. [2022-11-18 18:32:36,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3302 to 3299. [2022-11-18 18:32:36,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3299 states, 3124 states have (on average 4.043854033290653) internal successors, (12633), 3298 states have internal predecessors, (12633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:36,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3299 states to 3299 states and 12633 transitions. [2022-11-18 18:32:36,950 INFO L78 Accepts]: Start accepts. Automaton has 3299 states and 12633 transitions. Word has length 10 [2022-11-18 18:32:36,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:36,950 INFO L495 AbstractCegarLoop]: Abstraction has 3299 states and 12633 transitions. [2022-11-18 18:32:36,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:36,950 INFO L276 IsEmpty]: Start isEmpty. Operand 3299 states and 12633 transitions. [2022-11-18 18:32:36,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 18:32:36,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:36,951 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:36,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-18 18:32:37,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:32:37,154 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:32:37,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:37,155 INFO L85 PathProgramCache]: Analyzing trace with hash -786435443, now seen corresponding path program 1 times [2022-11-18 18:32:37,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:32:37,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2014836001] [2022-11-18 18:32:37,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:37,156 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:32:37,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:32:37,157 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:32:37,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-18 18:32:37,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:37,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 18:32:37,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:37,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:37,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:37,477 INFO L321 Elim1Store]: treesize reduction 89, result has 14.4 percent of original size [2022-11-18 18:32:37,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 40 [2022-11-18 18:32:37,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:37,680 INFO L321 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2022-11-18 18:32:37,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 52 [2022-11-18 18:32:38,315 INFO L321 Elim1Store]: treesize reduction 42, result has 26.3 percent of original size [2022-11-18 18:32:38,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 32 [2022-11-18 18:32:38,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:32:38,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:32:38,756 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:32:38,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2014836001] [2022-11-18 18:32:38,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2014836001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:38,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:38,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:32:38,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626218397] [2022-11-18 18:32:38,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:38,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:32:38,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:32:38,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:32:38,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:32:38,758 INFO L87 Difference]: Start difference. First operand 3299 states and 12633 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:39,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:39,134 INFO L93 Difference]: Finished difference Result 3300 states and 12635 transitions. [2022-11-18 18:32:39,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:32:39,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-18 18:32:39,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:39,150 INFO L225 Difference]: With dead ends: 3300 [2022-11-18 18:32:39,151 INFO L226 Difference]: Without dead ends: 3300 [2022-11-18 18:32:39,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:32:39,151 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:39,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 50 Unchecked, 0.3s Time] [2022-11-18 18:32:39,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3300 states. [2022-11-18 18:32:39,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3300 to 3295. [2022-11-18 18:32:39,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3295 states, 3120 states have (on average 4.046474358974359) internal successors, (12625), 3294 states have internal predecessors, (12625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:39,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3295 states to 3295 states and 12625 transitions. [2022-11-18 18:32:39,282 INFO L78 Accepts]: Start accepts. Automaton has 3295 states and 12625 transitions. Word has length 10 [2022-11-18 18:32:39,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:39,282 INFO L495 AbstractCegarLoop]: Abstraction has 3295 states and 12625 transitions. [2022-11-18 18:32:39,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:39,282 INFO L276 IsEmpty]: Start isEmpty. Operand 3295 states and 12625 transitions. [2022-11-18 18:32:39,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 18:32:39,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:39,283 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:39,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-18 18:32:39,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:32:39,484 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:32:39,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:39,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1376882647, now seen corresponding path program 1 times [2022-11-18 18:32:39,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:32:39,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920855483] [2022-11-18 18:32:39,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:39,486 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:32:39,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:32:39,487 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:32:39,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-18 18:32:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:39,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 18:32:39,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:39,869 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-18 18:32:39,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2022-11-18 18:32:39,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:39,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:32:40,025 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:32:40,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:32:40,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:32:40,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:32:40,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:32:40,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920855483] [2022-11-18 18:32:40,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920855483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:40,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:40,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:32:40,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388758048] [2022-11-18 18:32:40,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:40,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:32:40,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:32:40,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:32:40,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:32:40,115 INFO L87 Difference]: Start difference. First operand 3295 states and 12625 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:40,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:40,553 INFO L93 Difference]: Finished difference Result 3292 states and 12616 transitions. [2022-11-18 18:32:40,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:32:40,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-18 18:32:40,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:40,564 INFO L225 Difference]: With dead ends: 3292 [2022-11-18 18:32:40,564 INFO L226 Difference]: Without dead ends: 3292 [2022-11-18 18:32:40,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:32:40,565 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:40,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 49 Unchecked, 0.4s Time] [2022-11-18 18:32:40,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3292 states. [2022-11-18 18:32:40,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3292 to 3288. [2022-11-18 18:32:40,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3288 states, 3113 states have (on average 4.050112431737873) internal successors, (12608), 3287 states have internal predecessors, (12608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:40,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3288 states to 3288 states and 12608 transitions. [2022-11-18 18:32:40,630 INFO L78 Accepts]: Start accepts. Automaton has 3288 states and 12608 transitions. Word has length 10 [2022-11-18 18:32:40,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:40,631 INFO L495 AbstractCegarLoop]: Abstraction has 3288 states and 12608 transitions. [2022-11-18 18:32:40,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:40,631 INFO L276 IsEmpty]: Start isEmpty. Operand 3288 states and 12608 transitions. [2022-11-18 18:32:40,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 18:32:40,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:40,631 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 1, 1] [2022-11-18 18:32:40,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-18 18:32:40,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:32:40,832 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:32:40,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:40,832 INFO L85 PathProgramCache]: Analyzing trace with hash 2139826255, now seen corresponding path program 1 times [2022-11-18 18:32:40,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:32:40,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343349963] [2022-11-18 18:32:40,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:40,833 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:32:40,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:32:40,834 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:32:40,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-18 18:32:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:41,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 18:32:41,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:41,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 18:32:41,609 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:41,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:32:44,215 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:44,216 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:32:44,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343349963] [2022-11-18 18:32:44,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [343349963] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:32:44,216 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:32:44,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-18 18:32:44,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780474882] [2022-11-18 18:32:44,216 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:32:44,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 18:32:44,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:32:44,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 18:32:44,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:32:44,218 INFO L87 Difference]: Start difference. First operand 3288 states and 12608 transitions. Second operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:50,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:32:52,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:32:53,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:32:55,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:32:57,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:32:59,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:33:01,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:33:06,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:33:08,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:33:10,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:33:12,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:33:14,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:33:16,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:33:18,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:33:30,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:30,633 INFO L93 Difference]: Finished difference Result 31545 states and 123106 transitions. [2022-11-18 18:33:30,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 18:33:30,636 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-18 18:33:30,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:30,792 INFO L225 Difference]: With dead ends: 31545 [2022-11-18 18:33:30,792 INFO L226 Difference]: Without dead ends: 31545 [2022-11-18 18:33:30,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=223, Invalid=377, Unknown=0, NotChecked=0, Total=600 [2022-11-18 18:33:30,792 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1968 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3293 mSolverCounterSat, 249 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1968 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 3293 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:30,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1968 Valid, 0 Invalid, 3554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 3293 Invalid, 12 Unknown, 0 Unchecked, 39.5s Time] [2022-11-18 18:33:30,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31545 states. [2022-11-18 18:33:31,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31545 to 3345. [2022-11-18 18:33:31,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3345 states, 3170 states have (on average 4.013249211356467) internal successors, (12722), 3344 states have internal predecessors, (12722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:31,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3345 states to 3345 states and 12722 transitions. [2022-11-18 18:33:31,322 INFO L78 Accepts]: Start accepts. Automaton has 3345 states and 12722 transitions. Word has length 10 [2022-11-18 18:33:31,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:31,322 INFO L495 AbstractCegarLoop]: Abstraction has 3345 states and 12722 transitions. [2022-11-18 18:33:31,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:31,322 INFO L276 IsEmpty]: Start isEmpty. Operand 3345 states and 12722 transitions. [2022-11-18 18:33:31,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 18:33:31,323 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:31,323 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:31,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:31,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:33:31,524 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:33:31,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:31,524 INFO L85 PathProgramCache]: Analyzing trace with hash 79904513, now seen corresponding path program 2 times [2022-11-18 18:33:31,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:33:31,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851360146] [2022-11-18 18:33:31,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:33:31,525 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:33:31,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:33:31,525 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:33:31,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-18 18:33:31,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:33:31,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:33:31,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 18:33:31,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:32,009 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 18:33:32,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 18:33:32,231 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:33:32,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:33:32,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:32,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:33:32,439 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 18:33:32,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 18:33:32,575 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:33:32,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:33:32,631 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-18 18:33:32,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-18 18:33:32,745 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 18:33:32,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:33:32,746 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:33:32,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851360146] [2022-11-18 18:33:32,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [851360146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:33:32,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:33:32,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:33:32,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188998568] [2022-11-18 18:33:32,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:33:32,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:33:32,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:33:32,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:33:32,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:33:32,747 INFO L87 Difference]: Start difference. First operand 3345 states and 12722 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:33,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:33,384 INFO L93 Difference]: Finished difference Result 2854 states and 10828 transitions. [2022-11-18 18:33:33,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:33:33,385 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 18:33:33,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:33,393 INFO L225 Difference]: With dead ends: 2854 [2022-11-18 18:33:33,393 INFO L226 Difference]: Without dead ends: 2854 [2022-11-18 18:33:33,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:33:33,394 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 78 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:33,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 0 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 88 Invalid, 0 Unknown, 43 Unchecked, 0.6s Time] [2022-11-18 18:33:33,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2022-11-18 18:33:33,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 1633. [2022-11-18 18:33:33,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1633 states, 1540 states have (on average 3.748051948051948) internal successors, (5772), 1632 states have internal predecessors, (5772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:33,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 5772 transitions. [2022-11-18 18:33:33,434 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 5772 transitions. Word has length 11 [2022-11-18 18:33:33,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:33,434 INFO L495 AbstractCegarLoop]: Abstraction has 1633 states and 5772 transitions. [2022-11-18 18:33:33,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:33,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 5772 transitions. [2022-11-18 18:33:33,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 18:33:33,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:33,435 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:33,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:33,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:33:33,636 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:33:33,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:33,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1350725628, now seen corresponding path program 1 times [2022-11-18 18:33:33,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:33:33,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903325190] [2022-11-18 18:33:33,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:33,637 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:33:33,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:33:33,637 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:33:33,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-18 18:33:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:34,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:33:34,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:34,172 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:33:34,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:33:34,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:34,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:33:34,332 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:33:34,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:33:34,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:33:34,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:33:34,610 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:33:34,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903325190] [2022-11-18 18:33:34,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903325190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:33:34,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:33:34,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:33:34,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717390981] [2022-11-18 18:33:34,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:33:34,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:33:34,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:33:34,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:33:34,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:33:34,611 INFO L87 Difference]: Start difference. First operand 1633 states and 5772 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:35,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:35,032 INFO L93 Difference]: Finished difference Result 1636 states and 5776 transitions. [2022-11-18 18:33:35,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:33:35,033 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 18:33:35,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:35,038 INFO L225 Difference]: With dead ends: 1636 [2022-11-18 18:33:35,038 INFO L226 Difference]: Without dead ends: 1636 [2022-11-18 18:33:35,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:33:35,038 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:35,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 87 Unchecked, 0.4s Time] [2022-11-18 18:33:35,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2022-11-18 18:33:35,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1636. [2022-11-18 18:33:35,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1543 states have (on average 3.743357096565133) internal successors, (5776), 1635 states have internal predecessors, (5776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:35,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 5776 transitions. [2022-11-18 18:33:35,069 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 5776 transitions. Word has length 11 [2022-11-18 18:33:35,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:35,070 INFO L495 AbstractCegarLoop]: Abstraction has 1636 states and 5776 transitions. [2022-11-18 18:33:35,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:35,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 5776 transitions. [2022-11-18 18:33:35,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 18:33:35,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:35,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:35,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:35,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:33:35,272 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:33:35,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:35,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1348759422, now seen corresponding path program 1 times [2022-11-18 18:33:35,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:33:35,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862082321] [2022-11-18 18:33:35,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:35,272 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:33:35,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:33:35,273 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:33:35,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-18 18:33:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:35,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:33:35,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:35,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:35,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:35,615 INFO L321 Elim1Store]: treesize reduction 89, result has 14.4 percent of original size [2022-11-18 18:33:35,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 40 [2022-11-18 18:33:35,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:35,889 INFO L321 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2022-11-18 18:33:35,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 52 [2022-11-18 18:33:36,681 INFO L321 Elim1Store]: treesize reduction 78, result has 22.0 percent of original size [2022-11-18 18:33:36,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 44 [2022-11-18 18:33:37,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:33:37,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:33:37,248 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:33:37,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862082321] [2022-11-18 18:33:37,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862082321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:33:37,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:33:37,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:33:37,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423929636] [2022-11-18 18:33:37,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:33:37,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:33:37,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:33:37,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:33:37,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:33:37,250 INFO L87 Difference]: Start difference. First operand 1636 states and 5776 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:37,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:37,488 INFO L93 Difference]: Finished difference Result 1639 states and 5789 transitions. [2022-11-18 18:33:37,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:33:37,489 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 18:33:37,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:37,494 INFO L225 Difference]: With dead ends: 1639 [2022-11-18 18:33:37,494 INFO L226 Difference]: Without dead ends: 1639 [2022-11-18 18:33:37,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:33:37,494 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:37,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 75 Unchecked, 0.2s Time] [2022-11-18 18:33:37,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2022-11-18 18:33:37,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1639. [2022-11-18 18:33:37,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1546 states have (on average 3.7445019404915914) internal successors, (5789), 1638 states have internal predecessors, (5789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:37,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 5789 transitions. [2022-11-18 18:33:37,525 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 5789 transitions. Word has length 11 [2022-11-18 18:33:37,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:37,525 INFO L495 AbstractCegarLoop]: Abstraction has 1639 states and 5789 transitions. [2022-11-18 18:33:37,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:37,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 5789 transitions. [2022-11-18 18:33:37,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 18:33:37,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:37,526 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:37,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:37,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:33:37,726 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:33:37,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:37,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1350408498, now seen corresponding path program 2 times [2022-11-18 18:33:37,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:33:37,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84205463] [2022-11-18 18:33:37,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:33:37,727 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:33:37,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:33:37,728 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:33:37,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-18 18:33:37,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:33:37,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:33:37,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:33:37,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:38,118 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:33:38,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:33:38,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:38,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:33:38,277 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:33:38,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:33:38,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:33:38,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:33:38,529 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:33:38,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [84205463] [2022-11-18 18:33:38,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [84205463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:33:38,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:33:38,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:33:38,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090955231] [2022-11-18 18:33:38,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:33:38,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:33:38,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:33:38,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:33:38,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:33:38,531 INFO L87 Difference]: Start difference. First operand 1639 states and 5789 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:38,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:38,949 INFO L93 Difference]: Finished difference Result 1843 states and 6320 transitions. [2022-11-18 18:33:38,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:33:38,950 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 18:33:38,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:38,955 INFO L225 Difference]: With dead ends: 1843 [2022-11-18 18:33:38,955 INFO L226 Difference]: Without dead ends: 1843 [2022-11-18 18:33:38,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:33:38,956 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:38,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 130 Unchecked, 0.4s Time] [2022-11-18 18:33:38,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2022-11-18 18:33:39,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1646. [2022-11-18 18:33:39,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1646 states, 1553 states have (on average 3.735994848679974) internal successors, (5802), 1645 states have internal predecessors, (5802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:39,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 5802 transitions. [2022-11-18 18:33:39,010 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 5802 transitions. Word has length 11 [2022-11-18 18:33:39,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:39,010 INFO L495 AbstractCegarLoop]: Abstraction has 1646 states and 5802 transitions. [2022-11-18 18:33:39,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:39,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 5802 transitions. [2022-11-18 18:33:39,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 18:33:39,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:39,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:39,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:39,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:33:39,222 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:33:39,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:39,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1350642858, now seen corresponding path program 3 times [2022-11-18 18:33:39,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:33:39,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [85229027] [2022-11-18 18:33:39,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:33:39,223 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:33:39,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:33:39,224 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:33:39,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-18 18:33:39,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 18:33:39,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:33:39,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 18:33:39,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:39,591 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:33:39,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:33:39,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:39,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:33:39,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:39,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:33:40,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:33:40,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:33:40,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:33:40,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [85229027] [2022-11-18 18:33:40,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [85229027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:33:40,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:33:40,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:33:40,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288647936] [2022-11-18 18:33:40,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:33:40,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:33:40,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:33:40,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:33:40,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:33:40,006 INFO L87 Difference]: Start difference. First operand 1646 states and 5802 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:40,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:40,641 INFO L93 Difference]: Finished difference Result 1668 states and 5846 transitions. [2022-11-18 18:33:40,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:33:40,642 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 18:33:40,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:40,649 INFO L225 Difference]: With dead ends: 1668 [2022-11-18 18:33:40,649 INFO L226 Difference]: Without dead ends: 1668 [2022-11-18 18:33:40,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:33:40,650 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:40,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 87 Unchecked, 0.5s Time] [2022-11-18 18:33:40,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2022-11-18 18:33:40,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1653. [2022-11-18 18:33:40,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1653 states, 1560 states have (on average 3.7314102564102565) internal successors, (5821), 1652 states have internal predecessors, (5821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:40,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 5821 transitions. [2022-11-18 18:33:40,690 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 5821 transitions. Word has length 11 [2022-11-18 18:33:40,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:40,690 INFO L495 AbstractCegarLoop]: Abstraction has 1653 states and 5821 transitions. [2022-11-18 18:33:40,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:40,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 5821 transitions. [2022-11-18 18:33:40,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 18:33:40,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:40,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:40,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:40,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:33:40,905 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:33:40,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:40,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1870062885, now seen corresponding path program 1 times [2022-11-18 18:33:40,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:33:40,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580238249] [2022-11-18 18:33:40,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:40,906 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:33:40,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:33:40,907 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:33:40,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-18 18:33:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:41,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:33:41,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:41,294 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-18 18:33:41,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2022-11-18 18:33:41,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:41,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:33:41,451 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:33:41,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:33:41,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:33:41,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:33:41,553 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:33:41,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580238249] [2022-11-18 18:33:41,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580238249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:33:41,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:33:41,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:33:41,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391945857] [2022-11-18 18:33:41,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:33:41,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:33:41,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:33:41,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:33:41,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:33:41,554 INFO L87 Difference]: Start difference. First operand 1653 states and 5821 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:41,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:41,945 INFO L93 Difference]: Finished difference Result 1663 states and 5843 transitions. [2022-11-18 18:33:41,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:33:41,946 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 18:33:41,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:41,951 INFO L225 Difference]: With dead ends: 1663 [2022-11-18 18:33:41,951 INFO L226 Difference]: Without dead ends: 1663 [2022-11-18 18:33:41,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:33:41,951 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:41,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 46 Unchecked, 0.4s Time] [2022-11-18 18:33:41,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2022-11-18 18:33:41,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1656. [2022-11-18 18:33:41,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1656 states, 1563 states have (on average 3.73064619321817) internal successors, (5831), 1655 states have internal predecessors, (5831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:41,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 5831 transitions. [2022-11-18 18:33:41,986 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 5831 transitions. Word has length 11 [2022-11-18 18:33:41,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:41,986 INFO L495 AbstractCegarLoop]: Abstraction has 1656 states and 5831 transitions. [2022-11-18 18:33:41,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:41,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 5831 transitions. [2022-11-18 18:33:41,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 18:33:41,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:41,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:42,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:42,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:33:42,187 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:33:42,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:42,188 INFO L85 PathProgramCache]: Analyzing trace with hash 587603052, now seen corresponding path program 1 times [2022-11-18 18:33:42,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:33:42,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [809065764] [2022-11-18 18:33:42,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:42,188 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:33:42,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:33:42,189 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:33:42,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-18 18:33:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:42,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:33:42,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:42,600 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-18 18:33:42,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2022-11-18 18:33:42,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:42,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:33:42,778 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:33:42,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:33:42,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:33:42,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:33:42,875 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:33:42,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [809065764] [2022-11-18 18:33:42,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [809065764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:33:42,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:33:42,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:33:42,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682607810] [2022-11-18 18:33:42,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:33:42,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:33:42,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:33:42,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:33:42,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:33:42,877 INFO L87 Difference]: Start difference. First operand 1656 states and 5831 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:43,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:43,281 INFO L93 Difference]: Finished difference Result 1663 states and 5842 transitions. [2022-11-18 18:33:43,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:33:43,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 18:33:43,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:43,286 INFO L225 Difference]: With dead ends: 1663 [2022-11-18 18:33:43,286 INFO L226 Difference]: Without dead ends: 1663 [2022-11-18 18:33:43,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:33:43,287 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:43,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 46 Unchecked, 0.4s Time] [2022-11-18 18:33:43,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2022-11-18 18:33:43,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1656. [2022-11-18 18:33:43,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1656 states, 1563 states have (on average 3.730006397952655) internal successors, (5830), 1655 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:43,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 5830 transitions. [2022-11-18 18:33:43,318 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 5830 transitions. Word has length 11 [2022-11-18 18:33:43,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:43,318 INFO L495 AbstractCegarLoop]: Abstraction has 1656 states and 5830 transitions. [2022-11-18 18:33:43,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:43,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 5830 transitions. [2022-11-18 18:33:43,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 18:33:43,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:43,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:43,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:43,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:33:43,522 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:33:43,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:43,522 INFO L85 PathProgramCache]: Analyzing trace with hash 589260932, now seen corresponding path program 1 times [2022-11-18 18:33:43,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:33:43,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883951692] [2022-11-18 18:33:43,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:43,523 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:33:43,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:33:43,523 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:33:43,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-18 18:33:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:43,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:33:43,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:43,956 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-18 18:33:43,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2022-11-18 18:33:44,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:44,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:33:44,138 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:33:44,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:33:44,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:33:44,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:33:44,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:33:44,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883951692] [2022-11-18 18:33:44,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883951692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:33:44,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:33:44,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:33:44,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126856750] [2022-11-18 18:33:44,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:33:44,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:33:44,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:33:44,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:33:44,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:33:44,260 INFO L87 Difference]: Start difference. First operand 1656 states and 5830 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:44,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:44,683 INFO L93 Difference]: Finished difference Result 1662 states and 5842 transitions. [2022-11-18 18:33:44,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:33:44,684 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 18:33:44,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:44,688 INFO L225 Difference]: With dead ends: 1662 [2022-11-18 18:33:44,688 INFO L226 Difference]: Without dead ends: 1662 [2022-11-18 18:33:44,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:33:44,689 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:44,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 46 Unchecked, 0.4s Time] [2022-11-18 18:33:44,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2022-11-18 18:33:44,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1656. [2022-11-18 18:33:44,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1656 states, 1563 states have (on average 3.730006397952655) internal successors, (5830), 1655 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:44,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 5830 transitions. [2022-11-18 18:33:44,716 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 5830 transitions. Word has length 11 [2022-11-18 18:33:44,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:44,716 INFO L495 AbstractCegarLoop]: Abstraction has 1656 states and 5830 transitions. [2022-11-18 18:33:44,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:44,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 5830 transitions. [2022-11-18 18:33:44,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 18:33:44,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:44,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:44,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Ended with exit code 0 [2022-11-18 18:33:44,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:33:44,918 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting thread3Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:33:44,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:44,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1315318979, now seen corresponding path program 1 times [2022-11-18 18:33:44,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:33:44,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553124703] [2022-11-18 18:33:44,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:44,919 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:33:44,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:33:44,920 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:33:44,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-18 18:33:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:45,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:33:45,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:45,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:33:45,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:33:45,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:33:45,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [553124703] [2022-11-18 18:33:45,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [553124703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:33:45,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:33:45,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:33:45,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971255163] [2022-11-18 18:33:45,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:33:45,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:33:45,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:33:45,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:33:45,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:33:45,144 INFO L87 Difference]: Start difference. First operand 1656 states and 5830 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:45,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:45,739 INFO L93 Difference]: Finished difference Result 1374 states and 4718 transitions. [2022-11-18 18:33:45,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:33:45,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 18:33:45,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:45,743 INFO L225 Difference]: With dead ends: 1374 [2022-11-18 18:33:45,743 INFO L226 Difference]: Without dead ends: 1335 [2022-11-18 18:33:45,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:33:45,744 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:45,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 18:33:45,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2022-11-18 18:33:45,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1315. [2022-11-18 18:33:45,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1315 states, 1236 states have (on average 3.704692556634304) internal successors, (4579), 1314 states have internal predecessors, (4579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:45,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 4579 transitions. [2022-11-18 18:33:45,769 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 4579 transitions. Word has length 11 [2022-11-18 18:33:45,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:45,769 INFO L495 AbstractCegarLoop]: Abstraction has 1315 states and 4579 transitions. [2022-11-18 18:33:45,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:45,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 4579 transitions. [2022-11-18 18:33:45,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 18:33:45,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:45,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:45,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:45,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:33:45,970 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:33:45,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:45,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1854510057, now seen corresponding path program 1 times [2022-11-18 18:33:45,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:33:45,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395709431] [2022-11-18 18:33:45,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:45,971 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:33:45,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:33:45,972 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:33:45,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-18 18:33:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:46,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:33:46,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:46,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:46,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:46,329 INFO L321 Elim1Store]: treesize reduction 89, result has 14.4 percent of original size [2022-11-18 18:33:46,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 40 [2022-11-18 18:33:46,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:46,544 INFO L321 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2022-11-18 18:33:46,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 52 [2022-11-18 18:33:47,109 INFO L321 Elim1Store]: treesize reduction 42, result has 26.3 percent of original size [2022-11-18 18:33:47,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 32 [2022-11-18 18:33:48,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:33:48,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:33:48,430 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:33:48,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395709431] [2022-11-18 18:33:48,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395709431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:33:48,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:33:48,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:33:48,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444281425] [2022-11-18 18:33:48,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:33:48,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:33:48,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:33:48,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:33:48,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:33:48,431 INFO L87 Difference]: Start difference. First operand 1315 states and 4579 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:48,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:48,755 INFO L93 Difference]: Finished difference Result 1324 states and 4590 transitions. [2022-11-18 18:33:48,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:33:48,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 18:33:48,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:48,759 INFO L225 Difference]: With dead ends: 1324 [2022-11-18 18:33:48,759 INFO L226 Difference]: Without dead ends: 1315 [2022-11-18 18:33:48,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:33:48,760 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:48,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 93 Unchecked, 0.3s Time] [2022-11-18 18:33:48,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2022-11-18 18:33:48,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1315. [2022-11-18 18:33:48,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1315 states, 1236 states have (on average 3.6966019417475726) internal successors, (4569), 1314 states have internal predecessors, (4569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:48,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 4569 transitions. [2022-11-18 18:33:48,788 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 4569 transitions. Word has length 11 [2022-11-18 18:33:48,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:48,788 INFO L495 AbstractCegarLoop]: Abstraction has 1315 states and 4569 transitions. [2022-11-18 18:33:48,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:48,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 4569 transitions. [2022-11-18 18:33:48,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 18:33:48,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:48,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:48,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:48,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:33:48,994 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:33:48,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:48,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1338908080, now seen corresponding path program 1 times [2022-11-18 18:33:48,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:33:48,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052234340] [2022-11-18 18:33:48,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:48,995 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:33:48,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:33:48,996 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:33:48,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-18 18:33:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:49,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:33:49,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:49,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:49,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:49,351 INFO L321 Elim1Store]: treesize reduction 89, result has 14.4 percent of original size [2022-11-18 18:33:49,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 40 [2022-11-18 18:33:49,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:49,566 INFO L321 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2022-11-18 18:33:49,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 52 [2022-11-18 18:33:50,122 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:33:50,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:33:50,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:33:50,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:33:50,434 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:33:50,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2052234340] [2022-11-18 18:33:50,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2052234340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:33:50,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:33:50,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:33:50,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457278366] [2022-11-18 18:33:50,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:33:50,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:33:50,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:33:50,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:33:50,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:33:50,436 INFO L87 Difference]: Start difference. First operand 1315 states and 4569 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:50,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:50,764 INFO L93 Difference]: Finished difference Result 1316 states and 4569 transitions. [2022-11-18 18:33:50,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:33:50,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 18:33:50,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:50,769 INFO L225 Difference]: With dead ends: 1316 [2022-11-18 18:33:50,769 INFO L226 Difference]: Without dead ends: 1307 [2022-11-18 18:33:50,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:33:50,769 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:50,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 53 Unchecked, 0.3s Time] [2022-11-18 18:33:50,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2022-11-18 18:33:50,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1307. [2022-11-18 18:33:50,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 1228 states have (on average 3.710912052117264) internal successors, (4557), 1306 states have internal predecessors, (4557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:50,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 4557 transitions. [2022-11-18 18:33:50,801 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 4557 transitions. Word has length 11 [2022-11-18 18:33:50,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:50,802 INFO L495 AbstractCegarLoop]: Abstraction has 1307 states and 4557 transitions. [2022-11-18 18:33:50,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:50,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 4557 transitions. [2022-11-18 18:33:50,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 18:33:50,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:50,804 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:50,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:51,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:33:51,005 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:33:51,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:51,005 INFO L85 PathProgramCache]: Analyzing trace with hash 264650340, now seen corresponding path program 1 times [2022-11-18 18:33:51,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:33:51,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1920482312] [2022-11-18 18:33:51,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:51,006 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:33:51,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:33:51,007 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:33:51,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-18 18:33:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:51,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:33:51,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:51,423 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-18 18:33:51,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2022-11-18 18:33:51,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:51,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:33:51,569 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:33:51,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:33:51,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:33:51,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:33:51,695 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:33:51,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1920482312] [2022-11-18 18:33:51,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1920482312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:33:51,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:33:51,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:33:51,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120671613] [2022-11-18 18:33:51,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:33:51,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:33:51,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:33:51,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:33:51,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:33:51,698 INFO L87 Difference]: Start difference. First operand 1307 states and 4557 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:52,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:52,092 INFO L93 Difference]: Finished difference Result 1309 states and 4565 transitions. [2022-11-18 18:33:52,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:33:52,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 18:33:52,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:52,097 INFO L225 Difference]: With dead ends: 1309 [2022-11-18 18:33:52,097 INFO L226 Difference]: Without dead ends: 1309 [2022-11-18 18:33:52,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:33:52,098 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:52,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 46 Unchecked, 0.4s Time] [2022-11-18 18:33:52,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2022-11-18 18:33:52,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1306. [2022-11-18 18:33:52,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1227 states have (on average 3.7123064384678077) internal successors, (4555), 1305 states have internal predecessors, (4555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:52,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 4555 transitions. [2022-11-18 18:33:52,123 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 4555 transitions. Word has length 11 [2022-11-18 18:33:52,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:52,124 INFO L495 AbstractCegarLoop]: Abstraction has 1306 states and 4555 transitions. [2022-11-18 18:33:52,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:52,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 4555 transitions. [2022-11-18 18:33:52,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 18:33:52,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:52,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:52,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:52,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:33:52,325 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:33:52,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:52,326 INFO L85 PathProgramCache]: Analyzing trace with hash 266308220, now seen corresponding path program 1 times [2022-11-18 18:33:52,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:33:52,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [552364987] [2022-11-18 18:33:52,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:52,326 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:33:52,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:33:52,327 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:33:52,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-18 18:33:52,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:52,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:33:52,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:52,754 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-18 18:33:52,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2022-11-18 18:33:52,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:52,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:33:52,895 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:33:52,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:33:53,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:33:53,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:33:53,024 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:33:53,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [552364987] [2022-11-18 18:33:53,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [552364987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:33:53,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:33:53,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:33:53,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423295574] [2022-11-18 18:33:53,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:33:53,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:33:53,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:33:53,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:33:53,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:33:53,026 INFO L87 Difference]: Start difference. First operand 1306 states and 4555 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:53,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:53,478 INFO L93 Difference]: Finished difference Result 1304 states and 4551 transitions. [2022-11-18 18:33:53,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:33:53,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 18:33:53,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:53,483 INFO L225 Difference]: With dead ends: 1304 [2022-11-18 18:33:53,483 INFO L226 Difference]: Without dead ends: 1304 [2022-11-18 18:33:53,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:33:53,484 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:53,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 46 Unchecked, 0.4s Time] [2022-11-18 18:33:53,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2022-11-18 18:33:53,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1289. [2022-11-18 18:33:53,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1289 states, 1210 states have (on average 3.7355371900826446) internal successors, (4520), 1288 states have internal predecessors, (4520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:53,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 4520 transitions. [2022-11-18 18:33:53,515 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 4520 transitions. Word has length 11 [2022-11-18 18:33:53,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:53,515 INFO L495 AbstractCegarLoop]: Abstraction has 1289 states and 4520 transitions. [2022-11-18 18:33:53,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:53,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 4520 transitions. [2022-11-18 18:33:53,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:33:53,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:53,516 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1] [2022-11-18 18:33:53,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:53,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:33:53,729 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:33:53,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:53,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1691129719, now seen corresponding path program 3 times [2022-11-18 18:33:53,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:33:53,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269384484] [2022-11-18 18:33:53,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:33:53,730 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:33:53,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:33:53,732 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:33:53,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-18 18:33:54,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-18 18:33:54,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:33:54,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 18:33:54,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:54,265 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 18:33:54,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 18:33:54,976 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:33:54,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:33:58,884 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:33:58,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:33:58,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [269384484] [2022-11-18 18:33:58,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [269384484] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:33:58,885 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:33:58,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-11-18 18:33:58,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172477946] [2022-11-18 18:33:58,886 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:33:58,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 18:33:58,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:33:58,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 18:33:58,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-11-18 18:33:58,887 INFO L87 Difference]: Start difference. First operand 1289 states and 4520 transitions. Second operand has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:17,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:34:19,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:34:21,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:34:23,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:34:25,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:34:27,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:34:29,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:34:31,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:34:33,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:34:35,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:34:40,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:34:42,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:34:44,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:34:46,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:34:48,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:34:50,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:34:52,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:34:54,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:34:56,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:34:58,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:35:17,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:17,172 INFO L93 Difference]: Finished difference Result 15369 states and 55973 transitions. [2022-11-18 18:35:17,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 18:35:17,174 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:35:17,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:17,237 INFO L225 Difference]: With dead ends: 15369 [2022-11-18 18:35:17,237 INFO L226 Difference]: Without dead ends: 15369 [2022-11-18 18:35:17,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 21.7s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 18:35:17,238 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 4332 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5666 mSolverCounterSat, 660 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4332 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 660 IncrementalHoareTripleChecker+Valid, 5666 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:17,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4332 Valid, 0 Invalid, 6345 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [660 Valid, 5666 Invalid, 19 Unknown, 0 Unchecked, 60.1s Time] [2022-11-18 18:35:17,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15369 states. [2022-11-18 18:35:17,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15369 to 1310. [2022-11-18 18:35:17,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1231 states have (on average 3.703493095044679) internal successors, (4559), 1309 states have internal predecessors, (4559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:17,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 4559 transitions. [2022-11-18 18:35:17,410 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 4559 transitions. Word has length 12 [2022-11-18 18:35:17,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:17,410 INFO L495 AbstractCegarLoop]: Abstraction has 1310 states and 4559 transitions. [2022-11-18 18:35:17,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:17,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 4559 transitions. [2022-11-18 18:35:17,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:35:17,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:17,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:17,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:17,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:17,612 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:35:17,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:17,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1077175773, now seen corresponding path program 1 times [2022-11-18 18:35:17,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:17,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481598648] [2022-11-18 18:35:17,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:17,613 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:17,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:17,614 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:17,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-18 18:35:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:17,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:35:17,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:17,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:35:17,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:17,988 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:17,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481598648] [2022-11-18 18:35:17,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481598648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:17,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:17,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:35:17,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665507952] [2022-11-18 18:35:17,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:17,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:35:17,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:17,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:35:17,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:35:17,990 INFO L87 Difference]: Start difference. First operand 1310 states and 4559 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:18,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:18,722 INFO L93 Difference]: Finished difference Result 1517 states and 5127 transitions. [2022-11-18 18:35:18,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:35:18,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:35:18,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:18,726 INFO L225 Difference]: With dead ends: 1517 [2022-11-18 18:35:18,726 INFO L226 Difference]: Without dead ends: 1386 [2022-11-18 18:35:18,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:35:18,727 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:18,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 18:35:18,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2022-11-18 18:35:18,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1379. [2022-11-18 18:35:18,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1379 states, 1298 states have (on average 3.6386748844375965) internal successors, (4723), 1378 states have internal predecessors, (4723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:18,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 4723 transitions. [2022-11-18 18:35:18,763 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 4723 transitions. Word has length 12 [2022-11-18 18:35:18,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:18,764 INFO L495 AbstractCegarLoop]: Abstraction has 1379 states and 4723 transitions. [2022-11-18 18:35:18,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:18,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 4723 transitions. [2022-11-18 18:35:18,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:35:18,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:18,765 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:18,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:18,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:18,979 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:35:18,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:18,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1077175809, now seen corresponding path program 1 times [2022-11-18 18:35:18,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:18,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703460764] [2022-11-18 18:35:18,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:18,980 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:18,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:18,980 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:18,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-18 18:35:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:19,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:35:19,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:19,491 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:35:19,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:35:19,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:19,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:35:19,650 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:35:19,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:35:19,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:35:19,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:19,897 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:19,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [703460764] [2022-11-18 18:35:19,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [703460764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:19,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:19,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:35:19,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729160650] [2022-11-18 18:35:19,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:19,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:35:19,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:19,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:35:19,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:19,899 INFO L87 Difference]: Start difference. First operand 1379 states and 4723 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:20,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:20,294 INFO L93 Difference]: Finished difference Result 1381 states and 4725 transitions. [2022-11-18 18:35:20,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:35:20,295 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:35:20,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:20,299 INFO L225 Difference]: With dead ends: 1381 [2022-11-18 18:35:20,299 INFO L226 Difference]: Without dead ends: 1381 [2022-11-18 18:35:20,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:20,300 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:20,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 85 Unchecked, 0.4s Time] [2022-11-18 18:35:20,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2022-11-18 18:35:20,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1381. [2022-11-18 18:35:20,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1300 states have (on average 3.6346153846153846) internal successors, (4725), 1380 states have internal predecessors, (4725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:20,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 4725 transitions. [2022-11-18 18:35:20,323 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 4725 transitions. Word has length 12 [2022-11-18 18:35:20,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:20,323 INFO L495 AbstractCegarLoop]: Abstraction has 1381 states and 4725 transitions. [2022-11-18 18:35:20,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:20,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 4725 transitions. [2022-11-18 18:35:20,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:35:20,323 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:20,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:20,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Ended with exit code 0 [2022-11-18 18:35:20,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:20,524 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:35:20,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:20,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1137215090, now seen corresponding path program 1 times [2022-11-18 18:35:20,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:20,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43081749] [2022-11-18 18:35:20,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:20,525 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:20,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:20,527 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:20,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-18 18:35:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:20,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:35:20,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:20,997 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:35:20,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:35:21,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:21,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:35:21,148 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:35:21,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:35:21,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:35:21,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:21,412 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:21,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43081749] [2022-11-18 18:35:21,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [43081749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:21,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:21,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:35:21,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678326380] [2022-11-18 18:35:21,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:21,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:35:21,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:21,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:35:21,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:21,414 INFO L87 Difference]: Start difference. First operand 1381 states and 4725 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:21,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:21,794 INFO L93 Difference]: Finished difference Result 1387 states and 4747 transitions. [2022-11-18 18:35:21,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:35:21,795 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:35:21,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:21,799 INFO L225 Difference]: With dead ends: 1387 [2022-11-18 18:35:21,799 INFO L226 Difference]: Without dead ends: 1387 [2022-11-18 18:35:21,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:21,799 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:21,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 50 Unchecked, 0.4s Time] [2022-11-18 18:35:21,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2022-11-18 18:35:21,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1387. [2022-11-18 18:35:21,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1387 states, 1306 states have (on average 3.634762633996937) internal successors, (4747), 1386 states have internal predecessors, (4747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:21,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 4747 transitions. [2022-11-18 18:35:21,828 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 4747 transitions. Word has length 12 [2022-11-18 18:35:21,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:21,828 INFO L495 AbstractCegarLoop]: Abstraction has 1387 states and 4747 transitions. [2022-11-18 18:35:21,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:21,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 4747 transitions. [2022-11-18 18:35:21,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:35:21,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:21,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:21,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Ended with exit code 0 [2022-11-18 18:35:22,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:22,030 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:35:22,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:22,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1134087035, now seen corresponding path program 1 times [2022-11-18 18:35:22,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:22,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1636797479] [2022-11-18 18:35:22,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:22,031 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:22,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:22,031 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:22,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-18 18:35:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:22,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:35:22,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:22,469 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:35:22,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:35:22,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:22,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:35:22,619 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:35:22,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:35:22,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:35:22,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:22,891 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:22,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1636797479] [2022-11-18 18:35:22,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1636797479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:22,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:22,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:35:22,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253566592] [2022-11-18 18:35:22,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:22,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:35:22,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:22,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:35:22,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:22,893 INFO L87 Difference]: Start difference. First operand 1387 states and 4747 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:23,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:23,295 INFO L93 Difference]: Finished difference Result 1390 states and 4750 transitions. [2022-11-18 18:35:23,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:35:23,296 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:35:23,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:23,299 INFO L225 Difference]: With dead ends: 1390 [2022-11-18 18:35:23,299 INFO L226 Difference]: Without dead ends: 1390 [2022-11-18 18:35:23,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:23,300 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:23,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 50 Unchecked, 0.4s Time] [2022-11-18 18:35:23,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2022-11-18 18:35:23,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1390. [2022-11-18 18:35:23,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1309 states have (on average 3.628724216959511) internal successors, (4750), 1389 states have internal predecessors, (4750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:23,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 4750 transitions. [2022-11-18 18:35:23,324 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 4750 transitions. Word has length 12 [2022-11-18 18:35:23,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:23,324 INFO L495 AbstractCegarLoop]: Abstraction has 1390 states and 4750 transitions. [2022-11-18 18:35:23,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:23,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 4750 transitions. [2022-11-18 18:35:23,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:35:23,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:23,325 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:23,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Ended with exit code 0 [2022-11-18 18:35:23,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:23,526 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:35:23,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:23,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1138131140, now seen corresponding path program 2 times [2022-11-18 18:35:23,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:23,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393748901] [2022-11-18 18:35:23,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:35:23,527 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:23,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:23,528 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:23,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-18 18:35:23,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:35:23,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:35:23,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:35:23,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:23,916 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:35:23,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:35:23,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:23,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:35:24,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:24,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:35:24,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:35:24,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:24,331 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:24,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393748901] [2022-11-18 18:35:24,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393748901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:24,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:24,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:35:24,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228338044] [2022-11-18 18:35:24,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:24,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:35:24,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:24,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:35:24,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:24,332 INFO L87 Difference]: Start difference. First operand 1390 states and 4750 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:24,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:24,891 INFO L93 Difference]: Finished difference Result 1405 states and 4807 transitions. [2022-11-18 18:35:24,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:35:24,892 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:35:24,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:24,896 INFO L225 Difference]: With dead ends: 1405 [2022-11-18 18:35:24,896 INFO L226 Difference]: Without dead ends: 1405 [2022-11-18 18:35:24,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:35:24,896 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:24,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 0 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 48 Unchecked, 0.4s Time] [2022-11-18 18:35:24,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2022-11-18 18:35:24,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1400. [2022-11-18 18:35:24,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1319 states have (on average 3.631539044730857) internal successors, (4790), 1399 states have internal predecessors, (4790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:24,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 4790 transitions. [2022-11-18 18:35:24,920 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 4790 transitions. Word has length 12 [2022-11-18 18:35:24,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:24,920 INFO L495 AbstractCegarLoop]: Abstraction has 1400 states and 4790 transitions. [2022-11-18 18:35:24,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:24,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 4790 transitions. [2022-11-18 18:35:24,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:35:24,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:24,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:24,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Ended with exit code 0 [2022-11-18 18:35:25,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:25,128 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:35:25,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:25,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1138128195, now seen corresponding path program 1 times [2022-11-18 18:35:25,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:25,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690597208] [2022-11-18 18:35:25,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:25,129 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:25,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:25,130 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:25,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-18 18:35:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:25,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 18:35:25,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:25,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:25,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:25,512 INFO L321 Elim1Store]: treesize reduction 89, result has 14.4 percent of original size [2022-11-18 18:35:25,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 40 [2022-11-18 18:35:25,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:25,770 INFO L321 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2022-11-18 18:35:25,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 52 [2022-11-18 18:35:26,443 INFO L321 Elim1Store]: treesize reduction 42, result has 26.3 percent of original size [2022-11-18 18:35:26,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 32 [2022-11-18 18:35:26,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:35:26,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:26,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:26,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690597208] [2022-11-18 18:35:26,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1690597208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:26,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:26,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:35:26,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077473193] [2022-11-18 18:35:26,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:26,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:35:26,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:26,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:35:26,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:35:26,999 INFO L87 Difference]: Start difference. First operand 1400 states and 4790 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:27,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:27,286 INFO L93 Difference]: Finished difference Result 1401 states and 4793 transitions. [2022-11-18 18:35:27,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:35:27,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:35:27,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:27,291 INFO L225 Difference]: With dead ends: 1401 [2022-11-18 18:35:27,291 INFO L226 Difference]: Without dead ends: 1401 [2022-11-18 18:35:27,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:35:27,292 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:27,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 47 Unchecked, 0.3s Time] [2022-11-18 18:35:27,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2022-11-18 18:35:27,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1401. [2022-11-18 18:35:27,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1320 states have (on average 3.631060606060606) internal successors, (4793), 1400 states have internal predecessors, (4793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:27,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 4793 transitions. [2022-11-18 18:35:27,324 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 4793 transitions. Word has length 12 [2022-11-18 18:35:27,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:27,325 INFO L495 AbstractCegarLoop]: Abstraction has 1401 states and 4793 transitions. [2022-11-18 18:35:27,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:27,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 4793 transitions. [2022-11-18 18:35:27,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:35:27,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:27,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:27,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:27,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:27,539 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:35:27,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:27,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1138127885, now seen corresponding path program 2 times [2022-11-18 18:35:27,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:27,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848415704] [2022-11-18 18:35:27,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:35:27,540 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:27,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:27,541 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:27,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-18 18:35:27,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:35:27,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:35:27,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:35:27,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:27,923 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:35:27,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:35:27,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:27,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:35:28,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:28,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:35:28,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:35:28,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:28,327 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:28,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848415704] [2022-11-18 18:35:28,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848415704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:28,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:28,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:35:28,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629659518] [2022-11-18 18:35:28,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:28,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:35:28,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:28,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:35:28,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:28,328 INFO L87 Difference]: Start difference. First operand 1401 states and 4793 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:28,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:28,894 INFO L93 Difference]: Finished difference Result 1409 states and 4813 transitions. [2022-11-18 18:35:28,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:35:28,894 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:35:28,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:28,898 INFO L225 Difference]: With dead ends: 1409 [2022-11-18 18:35:28,898 INFO L226 Difference]: Without dead ends: 1409 [2022-11-18 18:35:28,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:35:28,899 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:28,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 0 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 48 Unchecked, 0.5s Time] [2022-11-18 18:35:28,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2022-11-18 18:35:28,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1404. [2022-11-18 18:35:28,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1323 states have (on average 3.633408919123205) internal successors, (4807), 1403 states have internal predecessors, (4807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:28,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 4807 transitions. [2022-11-18 18:35:28,920 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 4807 transitions. Word has length 12 [2022-11-18 18:35:28,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:28,920 INFO L495 AbstractCegarLoop]: Abstraction has 1404 states and 4807 transitions. [2022-11-18 18:35:28,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:28,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 4807 transitions. [2022-11-18 18:35:28,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:35:28,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:28,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:28,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Ended with exit code 0 [2022-11-18 18:35:29,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:29,122 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:35:29,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:29,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1138129497, now seen corresponding path program 1 times [2022-11-18 18:35:29,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:29,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747362905] [2022-11-18 18:35:29,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:29,123 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:29,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:29,124 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:29,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2022-11-18 18:35:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:29,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:35:29,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:29,585 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:35:29,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:35:29,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:29,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:35:29,736 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:35:29,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:35:30,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:35:30,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:30,029 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:30,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1747362905] [2022-11-18 18:35:30,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1747362905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:30,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:30,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:35:30,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833127348] [2022-11-18 18:35:30,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:30,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:35:30,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:30,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:35:30,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:30,030 INFO L87 Difference]: Start difference. First operand 1404 states and 4807 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:30,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:30,389 INFO L93 Difference]: Finished difference Result 1409 states and 4818 transitions. [2022-11-18 18:35:30,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:35:30,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:35:30,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:30,393 INFO L225 Difference]: With dead ends: 1409 [2022-11-18 18:35:30,393 INFO L226 Difference]: Without dead ends: 1409 [2022-11-18 18:35:30,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:30,394 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:30,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 80 Unchecked, 0.3s Time] [2022-11-18 18:35:30,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2022-11-18 18:35:30,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1405. [2022-11-18 18:35:30,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1405 states, 1324 states have (on average 3.632175226586103) internal successors, (4809), 1404 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:30,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 4809 transitions. [2022-11-18 18:35:30,416 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 4809 transitions. Word has length 12 [2022-11-18 18:35:30,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:30,416 INFO L495 AbstractCegarLoop]: Abstraction has 1405 states and 4809 transitions. [2022-11-18 18:35:30,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:30,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 4809 transitions. [2022-11-18 18:35:30,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:35:30,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:30,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:30,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (61)] Ended with exit code 0 [2022-11-18 18:35:30,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:30,618 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:35:30,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:30,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1138339460, now seen corresponding path program 3 times [2022-11-18 18:35:30,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:30,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916733373] [2022-11-18 18:35:30,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:35:30,619 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:30,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:30,619 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:30,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-18 18:35:30,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 18:35:30,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:35:30,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:35:30,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:31,090 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:35:31,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:35:31,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:31,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:35:31,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:31,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:35:31,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:35:31,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:31,529 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:31,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916733373] [2022-11-18 18:35:31,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916733373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:31,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:31,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:35:31,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18876611] [2022-11-18 18:35:31,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:31,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:35:31,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:31,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:35:31,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:31,531 INFO L87 Difference]: Start difference. First operand 1405 states and 4809 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:32,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:32,123 INFO L93 Difference]: Finished difference Result 1444 states and 4944 transitions. [2022-11-18 18:35:32,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:35:32,124 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:35:32,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:32,128 INFO L225 Difference]: With dead ends: 1444 [2022-11-18 18:35:32,128 INFO L226 Difference]: Without dead ends: 1444 [2022-11-18 18:35:32,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:35:32,128 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:32,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 116 Unchecked, 0.5s Time] [2022-11-18 18:35:32,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2022-11-18 18:35:32,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1412. [2022-11-18 18:35:32,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1331 states have (on average 3.63335837716003) internal successors, (4836), 1411 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:32,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 4836 transitions. [2022-11-18 18:35:32,151 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 4836 transitions. Word has length 12 [2022-11-18 18:35:32,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:32,151 INFO L495 AbstractCegarLoop]: Abstraction has 1412 states and 4836 transitions. [2022-11-18 18:35:32,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:32,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 4836 transitions. [2022-11-18 18:35:32,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:35:32,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:32,152 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:32,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (62)] Ended with exit code 0 [2022-11-18 18:35:32,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:32,353 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:35:32,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:32,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1138238555, now seen corresponding path program 3 times [2022-11-18 18:35:32,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:32,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80934923] [2022-11-18 18:35:32,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:35:32,354 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:32,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:32,354 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:32,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2022-11-18 18:35:32,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 18:35:32,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:35:32,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:35:32,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:32,765 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:35:32,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:35:32,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:32,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:35:32,917 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:35:32,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:35:33,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:35:33,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:33,178 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:33,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80934923] [2022-11-18 18:35:33,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80934923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:33,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:33,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:35:33,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138270473] [2022-11-18 18:35:33,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:33,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:35:33,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:33,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:35:33,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:33,179 INFO L87 Difference]: Start difference. First operand 1412 states and 4836 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:33,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:33,537 INFO L93 Difference]: Finished difference Result 1414 states and 4838 transitions. [2022-11-18 18:35:33,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:35:33,538 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:35:33,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:33,541 INFO L225 Difference]: With dead ends: 1414 [2022-11-18 18:35:33,542 INFO L226 Difference]: Without dead ends: 1414 [2022-11-18 18:35:33,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:33,542 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:33,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 81 Unchecked, 0.3s Time] [2022-11-18 18:35:33,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2022-11-18 18:35:33,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1412. [2022-11-18 18:35:33,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1331 states have (on average 3.63335837716003) internal successors, (4836), 1411 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:33,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 4836 transitions. [2022-11-18 18:35:33,565 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 4836 transitions. Word has length 12 [2022-11-18 18:35:33,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:33,565 INFO L495 AbstractCegarLoop]: Abstraction has 1412 states and 4836 transitions. [2022-11-18 18:35:33,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:33,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 4836 transitions. [2022-11-18 18:35:33,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:35:33,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:33,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:33,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (63)] Ended with exit code 0 [2022-11-18 18:35:33,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:33,770 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:35:33,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:33,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1138288527, now seen corresponding path program 2 times [2022-11-18 18:35:33,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:33,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505915048] [2022-11-18 18:35:33,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:35:33,771 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:33,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:33,772 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:33,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2022-11-18 18:35:34,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:35:34,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:35:34,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:35:34,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:34,180 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:35:34,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:35:34,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:34,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:35:34,344 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:35:34,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:35:34,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:35:34,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:34,606 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:34,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505915048] [2022-11-18 18:35:34,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1505915048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:34,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:34,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:35:34,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385405904] [2022-11-18 18:35:34,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:34,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:35:34,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:34,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:35:34,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:34,607 INFO L87 Difference]: Start difference. First operand 1412 states and 4836 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:34,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:34,978 INFO L93 Difference]: Finished difference Result 1416 states and 4844 transitions. [2022-11-18 18:35:34,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:35:34,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:35:34,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:34,982 INFO L225 Difference]: With dead ends: 1416 [2022-11-18 18:35:34,982 INFO L226 Difference]: Without dead ends: 1416 [2022-11-18 18:35:34,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:34,982 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:34,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 50 Unchecked, 0.3s Time] [2022-11-18 18:35:34,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2022-11-18 18:35:35,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1413. [2022-11-18 18:35:35,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1413 states, 1332 states have (on average 3.6321321321321323) internal successors, (4838), 1412 states have internal predecessors, (4838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:35,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 4838 transitions. [2022-11-18 18:35:35,006 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 4838 transitions. Word has length 12 [2022-11-18 18:35:35,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:35,007 INFO L495 AbstractCegarLoop]: Abstraction has 1413 states and 4838 transitions. [2022-11-18 18:35:35,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:35,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 4838 transitions. [2022-11-18 18:35:35,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:35:35,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:35,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:35,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:35,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:35,221 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:35:35,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:35,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1135636167, now seen corresponding path program 3 times [2022-11-18 18:35:35,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:35,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1841870232] [2022-11-18 18:35:35,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:35:35,223 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:35,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:35,224 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:35,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2022-11-18 18:35:35,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 18:35:35,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:35:35,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:35:35,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:35,624 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:35:35,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:35:35,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:35,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:35:35,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:35,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:35:36,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:35:36,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:36,038 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:36,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1841870232] [2022-11-18 18:35:36,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1841870232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:36,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:36,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:35:36,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11581454] [2022-11-18 18:35:36,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:36,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:35:36,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:36,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:35:36,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:36,042 INFO L87 Difference]: Start difference. First operand 1413 states and 4838 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:36,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:36,619 INFO L93 Difference]: Finished difference Result 1419 states and 4851 transitions. [2022-11-18 18:35:36,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:35:36,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:35:36,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:36,624 INFO L225 Difference]: With dead ends: 1419 [2022-11-18 18:35:36,624 INFO L226 Difference]: Without dead ends: 1419 [2022-11-18 18:35:36,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:35:36,624 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:36,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 0 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 50 Unchecked, 0.5s Time] [2022-11-18 18:35:36,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2022-11-18 18:35:36,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1417. [2022-11-18 18:35:36,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 1336 states have (on average 3.627994011976048) internal successors, (4847), 1416 states have internal predecessors, (4847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:36,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 4847 transitions. [2022-11-18 18:35:36,648 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 4847 transitions. Word has length 12 [2022-11-18 18:35:36,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:36,648 INFO L495 AbstractCegarLoop]: Abstraction has 1417 states and 4847 transitions. [2022-11-18 18:35:36,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:36,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 4847 transitions. [2022-11-18 18:35:36,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:35:36,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:36,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:36,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (65)] Ended with exit code 0 [2022-11-18 18:35:36,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:36,858 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:35:36,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:36,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1079741679, now seen corresponding path program 2 times [2022-11-18 18:35:36,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:36,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061859103] [2022-11-18 18:35:36,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:35:36,859 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:36,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:36,860 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:36,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2022-11-18 18:35:37,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:35:37,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:35:37,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:35:37,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:37,275 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:35:37,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:35:37,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:37,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:35:37,428 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:35:37,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:35:37,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:35:37,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:37,697 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:37,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061859103] [2022-11-18 18:35:37,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061859103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:37,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:37,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:35:37,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598970747] [2022-11-18 18:35:37,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:37,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:35:37,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:37,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:35:37,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:37,699 INFO L87 Difference]: Start difference. First operand 1417 states and 4847 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:38,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:38,109 INFO L93 Difference]: Finished difference Result 1419 states and 4848 transitions. [2022-11-18 18:35:38,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:35:38,110 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:35:38,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:38,114 INFO L225 Difference]: With dead ends: 1419 [2022-11-18 18:35:38,114 INFO L226 Difference]: Without dead ends: 1416 [2022-11-18 18:35:38,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:38,115 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:38,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 49 Unchecked, 0.4s Time] [2022-11-18 18:35:38,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2022-11-18 18:35:38,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1416. [2022-11-18 18:35:38,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1335 states have (on average 3.6292134831460676) internal successors, (4845), 1415 states have internal predecessors, (4845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:38,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 4845 transitions. [2022-11-18 18:35:38,140 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 4845 transitions. Word has length 12 [2022-11-18 18:35:38,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:38,140 INFO L495 AbstractCegarLoop]: Abstraction has 1416 states and 4845 transitions. [2022-11-18 18:35:38,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:38,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 4845 transitions. [2022-11-18 18:35:38,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:35:38,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:38,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:38,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (66)] Ended with exit code 0 [2022-11-18 18:35:38,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:38,341 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:35:38,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:38,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1079627289, now seen corresponding path program 3 times [2022-11-18 18:35:38,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:38,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990502611] [2022-11-18 18:35:38,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:35:38,342 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:38,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:38,343 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:38,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2022-11-18 18:35:38,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 18:35:38,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:35:38,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:35:38,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:38,760 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:35:38,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:35:38,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:38,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:35:38,925 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:35:38,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:35:39,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:35:39,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:39,207 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:39,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990502611] [2022-11-18 18:35:39,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990502611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:39,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:39,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:35:39,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409706974] [2022-11-18 18:35:39,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:39,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:35:39,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:39,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:35:39,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:39,208 INFO L87 Difference]: Start difference. First operand 1416 states and 4845 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:39,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:39,617 INFO L93 Difference]: Finished difference Result 1417 states and 4846 transitions. [2022-11-18 18:35:39,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:35:39,618 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:35:39,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:39,622 INFO L225 Difference]: With dead ends: 1417 [2022-11-18 18:35:39,622 INFO L226 Difference]: Without dead ends: 1417 [2022-11-18 18:35:39,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:39,623 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:39,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 81 Unchecked, 0.4s Time] [2022-11-18 18:35:39,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2022-11-18 18:35:39,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 1416. [2022-11-18 18:35:39,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1335 states have (on average 3.6292134831460676) internal successors, (4845), 1415 states have internal predecessors, (4845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:39,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 4845 transitions. [2022-11-18 18:35:39,650 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 4845 transitions. Word has length 12 [2022-11-18 18:35:39,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:39,650 INFO L495 AbstractCegarLoop]: Abstraction has 1416 states and 4845 transitions. [2022-11-18 18:35:39,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:39,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 4845 transitions. [2022-11-18 18:35:39,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:35:39,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:39,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:39,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (67)] Ended with exit code 0 [2022-11-18 18:35:39,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:39,852 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:35:39,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:39,852 INFO L85 PathProgramCache]: Analyzing trace with hash 2137292947, now seen corresponding path program 1 times [2022-11-18 18:35:39,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:39,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1215720184] [2022-11-18 18:35:39,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:39,853 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:39,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:39,854 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:39,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2022-11-18 18:35:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:40,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:35:40,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:40,376 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:35:40,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:35:40,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:40,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:35:40,530 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:35:40,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:35:40,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:35:40,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:40,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:40,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1215720184] [2022-11-18 18:35:40,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1215720184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:40,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:40,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:35:40,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768968350] [2022-11-18 18:35:40,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:40,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:35:40,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:40,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:35:40,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:40,847 INFO L87 Difference]: Start difference. First operand 1416 states and 4845 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:41,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:41,239 INFO L93 Difference]: Finished difference Result 1419 states and 4848 transitions. [2022-11-18 18:35:41,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:35:41,240 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:35:41,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:41,244 INFO L225 Difference]: With dead ends: 1419 [2022-11-18 18:35:41,244 INFO L226 Difference]: Without dead ends: 1419 [2022-11-18 18:35:41,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:41,244 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:41,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 49 Unchecked, 0.4s Time] [2022-11-18 18:35:41,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2022-11-18 18:35:41,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1419. [2022-11-18 18:35:41,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1338 states have (on average 3.623318385650224) internal successors, (4848), 1418 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:41,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 4848 transitions. [2022-11-18 18:35:41,268 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 4848 transitions. Word has length 12 [2022-11-18 18:35:41,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:41,269 INFO L495 AbstractCegarLoop]: Abstraction has 1419 states and 4848 transitions. [2022-11-18 18:35:41,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:41,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 4848 transitions. [2022-11-18 18:35:41,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:35:41,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:41,270 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:41,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (68)] Ended with exit code 0 [2022-11-18 18:35:41,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:41,474 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:35:41,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:41,475 INFO L85 PathProgramCache]: Analyzing trace with hash 2139259153, now seen corresponding path program 1 times [2022-11-18 18:35:41,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:41,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288347279] [2022-11-18 18:35:41,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:41,475 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:41,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:41,476 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:41,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2022-11-18 18:35:41,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:41,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:35:41,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:41,924 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-18 18:35:41,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2022-11-18 18:35:41,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:41,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:35:42,069 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:35:42,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:35:42,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:35:42,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:42,186 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:42,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288347279] [2022-11-18 18:35:42,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288347279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:42,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:42,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:35:42,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191829305] [2022-11-18 18:35:42,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:42,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:35:42,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:42,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:35:42,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:35:42,188 INFO L87 Difference]: Start difference. First operand 1419 states and 4848 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:42,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:42,571 INFO L93 Difference]: Finished difference Result 1422 states and 4860 transitions. [2022-11-18 18:35:42,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:35:42,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:35:42,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:42,575 INFO L225 Difference]: With dead ends: 1422 [2022-11-18 18:35:42,575 INFO L226 Difference]: Without dead ends: 1422 [2022-11-18 18:35:42,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:35:42,576 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:42,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 46 Unchecked, 0.3s Time] [2022-11-18 18:35:42,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2022-11-18 18:35:42,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1422. [2022-11-18 18:35:42,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1422 states, 1341 states have (on average 3.6241610738255035) internal successors, (4860), 1421 states have internal predecessors, (4860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:42,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 4860 transitions. [2022-11-18 18:35:42,602 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 4860 transitions. Word has length 12 [2022-11-18 18:35:42,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:42,602 INFO L495 AbstractCegarLoop]: Abstraction has 1422 states and 4860 transitions. [2022-11-18 18:35:42,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:42,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 4860 transitions. [2022-11-18 18:35:42,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:35:42,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:42,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:42,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (69)] Ended with exit code 0 [2022-11-18 18:35:42,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:42,814 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:35:42,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:42,815 INFO L85 PathProgramCache]: Analyzing trace with hash 2137610077, now seen corresponding path program 2 times [2022-11-18 18:35:42,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:42,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1989259318] [2022-11-18 18:35:42,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:35:42,815 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:42,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:42,816 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:42,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2022-11-18 18:35:43,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:35:43,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:35:43,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:35:43,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:43,254 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:35:43,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:35:43,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:43,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:35:43,410 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:35:43,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:35:43,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:35:43,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:43,722 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:43,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1989259318] [2022-11-18 18:35:43,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1989259318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:43,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:43,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:35:43,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602367570] [2022-11-18 18:35:43,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:43,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:35:43,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:43,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:35:43,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:43,723 INFO L87 Difference]: Start difference. First operand 1422 states and 4860 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:44,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:44,099 INFO L93 Difference]: Finished difference Result 1424 states and 4862 transitions. [2022-11-18 18:35:44,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:35:44,100 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:35:44,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:44,103 INFO L225 Difference]: With dead ends: 1424 [2022-11-18 18:35:44,104 INFO L226 Difference]: Without dead ends: 1424 [2022-11-18 18:35:44,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:44,104 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:44,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 83 Unchecked, 0.4s Time] [2022-11-18 18:35:44,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2022-11-18 18:35:44,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1422. [2022-11-18 18:35:44,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1422 states, 1341 states have (on average 3.6241610738255035) internal successors, (4860), 1421 states have internal predecessors, (4860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:44,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 4860 transitions. [2022-11-18 18:35:44,134 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 4860 transitions. Word has length 12 [2022-11-18 18:35:44,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:44,134 INFO L495 AbstractCegarLoop]: Abstraction has 1422 states and 4860 transitions. [2022-11-18 18:35:44,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:44,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 4860 transitions. [2022-11-18 18:35:44,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:35:44,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:44,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:44,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:44,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:44,335 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:35:44,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:44,336 INFO L85 PathProgramCache]: Analyzing trace with hash 2137375717, now seen corresponding path program 3 times [2022-11-18 18:35:44,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:44,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [600260854] [2022-11-18 18:35:44,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:35:44,336 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:44,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:44,337 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:44,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2022-11-18 18:35:44,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 18:35:44,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:35:44,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:35:44,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:44,771 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:35:44,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:35:44,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:44,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:35:44,927 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:35:44,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:35:45,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:35:45,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:45,186 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:45,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [600260854] [2022-11-18 18:35:45,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [600260854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:45,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:45,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:35:45,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650142016] [2022-11-18 18:35:45,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:45,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:35:45,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:45,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:35:45,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:45,187 INFO L87 Difference]: Start difference. First operand 1422 states and 4860 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:45,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:45,529 INFO L93 Difference]: Finished difference Result 1424 states and 4862 transitions. [2022-11-18 18:35:45,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:35:45,529 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:35:45,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:45,532 INFO L225 Difference]: With dead ends: 1424 [2022-11-18 18:35:45,533 INFO L226 Difference]: Without dead ends: 1424 [2022-11-18 18:35:45,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:45,533 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:45,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 47 Unchecked, 0.3s Time] [2022-11-18 18:35:45,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2022-11-18 18:35:45,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1422. [2022-11-18 18:35:45,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1422 states, 1341 states have (on average 3.6241610738255035) internal successors, (4860), 1421 states have internal predecessors, (4860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:45,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 4860 transitions. [2022-11-18 18:35:45,554 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 4860 transitions. Word has length 12 [2022-11-18 18:35:45,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:45,554 INFO L495 AbstractCegarLoop]: Abstraction has 1422 states and 4860 transitions. [2022-11-18 18:35:45,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:45,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 4860 transitions. [2022-11-18 18:35:45,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:35:45,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:45,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:45,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:45,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:45,755 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:35:45,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:45,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2137371904, now seen corresponding path program 1 times [2022-11-18 18:35:45,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:45,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2063938686] [2022-11-18 18:35:45,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:45,756 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:45,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:45,757 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:45,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2022-11-18 18:35:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:46,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 18:35:46,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:46,164 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-18 18:35:46,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2022-11-18 18:35:46,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:46,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:35:46,281 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:35:46,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:35:46,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:35:46,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:46,401 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:46,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2063938686] [2022-11-18 18:35:46,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2063938686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:46,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:46,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:35:46,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761339019] [2022-11-18 18:35:46,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:46,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:35:46,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:46,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:35:46,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:35:46,402 INFO L87 Difference]: Start difference. First operand 1422 states and 4860 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:46,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:46,765 INFO L93 Difference]: Finished difference Result 1423 states and 4862 transitions. [2022-11-18 18:35:46,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:35:46,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:35:46,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:46,769 INFO L225 Difference]: With dead ends: 1423 [2022-11-18 18:35:46,769 INFO L226 Difference]: Without dead ends: 1423 [2022-11-18 18:35:46,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:35:46,769 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:46,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 46 Unchecked, 0.3s Time] [2022-11-18 18:35:46,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2022-11-18 18:35:46,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1423. [2022-11-18 18:35:46,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1423 states, 1342 states have (on average 3.622950819672131) internal successors, (4862), 1422 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:46,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 4862 transitions. [2022-11-18 18:35:46,805 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 4862 transitions. Word has length 12 [2022-11-18 18:35:46,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:46,805 INFO L495 AbstractCegarLoop]: Abstraction has 1423 states and 4862 transitions. [2022-11-18 18:35:46,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:46,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 4862 transitions. [2022-11-18 18:35:46,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:35:46,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:46,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:46,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (72)] Ended with exit code 0 [2022-11-18 18:35:47,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:47,010 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:35:47,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:47,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1035743788, now seen corresponding path program 1 times [2022-11-18 18:35:47,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:47,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282607359] [2022-11-18 18:35:47,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:47,011 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:47,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:47,012 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:47,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2022-11-18 18:35:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:47,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:35:47,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:47,527 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:35:47,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:35:47,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:47,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:35:47,688 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:35:47,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:35:47,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:35:47,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:47,909 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:47,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282607359] [2022-11-18 18:35:47,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282607359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:47,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:47,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:35:47,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505348240] [2022-11-18 18:35:47,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:47,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:35:47,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:47,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:35:47,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:47,911 INFO L87 Difference]: Start difference. First operand 1423 states and 4862 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:48,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:48,290 INFO L93 Difference]: Finished difference Result 1426 states and 4866 transitions. [2022-11-18 18:35:48,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:35:48,290 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:35:48,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:48,294 INFO L225 Difference]: With dead ends: 1426 [2022-11-18 18:35:48,294 INFO L226 Difference]: Without dead ends: 1426 [2022-11-18 18:35:48,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:48,294 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:48,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 87 Unchecked, 0.4s Time] [2022-11-18 18:35:48,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2022-11-18 18:35:48,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1425. [2022-11-18 18:35:48,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 1344 states have (on average 3.619047619047619) internal successors, (4864), 1424 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:48,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 4864 transitions. [2022-11-18 18:35:48,317 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 4864 transitions. Word has length 12 [2022-11-18 18:35:48,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:48,317 INFO L495 AbstractCegarLoop]: Abstraction has 1425 states and 4864 transitions. [2022-11-18 18:35:48,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:48,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 4864 transitions. [2022-11-18 18:35:48,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:35:48,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:48,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:48,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (73)] Ended with exit code 0 [2022-11-18 18:35:48,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:48,518 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:35:48,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:48,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1037709994, now seen corresponding path program 1 times [2022-11-18 18:35:48,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:48,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492069639] [2022-11-18 18:35:48,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:48,519 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:48,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:48,520 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:48,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2022-11-18 18:35:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:48,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 18:35:48,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:48,974 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-18 18:35:48,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2022-11-18 18:35:49,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:49,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:35:49,109 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:35:49,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:35:49,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:35:49,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:49,214 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:49,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492069639] [2022-11-18 18:35:49,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492069639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:49,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:49,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:35:49,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509096191] [2022-11-18 18:35:49,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:49,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:35:49,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:49,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:35:49,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:35:49,215 INFO L87 Difference]: Start difference. First operand 1425 states and 4864 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:49,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:49,560 INFO L93 Difference]: Finished difference Result 1425 states and 4863 transitions. [2022-11-18 18:35:49,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:35:49,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:35:49,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:49,564 INFO L225 Difference]: With dead ends: 1425 [2022-11-18 18:35:49,564 INFO L226 Difference]: Without dead ends: 1425 [2022-11-18 18:35:49,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:35:49,565 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:49,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 46 Unchecked, 0.3s Time] [2022-11-18 18:35:49,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2022-11-18 18:35:49,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1425. [2022-11-18 18:35:49,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 1344 states have (on average 3.6183035714285716) internal successors, (4863), 1424 states have internal predecessors, (4863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:49,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 4863 transitions. [2022-11-18 18:35:49,591 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 4863 transitions. Word has length 12 [2022-11-18 18:35:49,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:49,591 INFO L495 AbstractCegarLoop]: Abstraction has 1425 states and 4863 transitions. [2022-11-18 18:35:49,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:49,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 4863 transitions. [2022-11-18 18:35:49,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:35:49,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:49,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:49,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (74)] Ended with exit code 0 [2022-11-18 18:35:49,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:49,793 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:35:49,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:49,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1036060918, now seen corresponding path program 2 times [2022-11-18 18:35:49,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:49,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242232299] [2022-11-18 18:35:49,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:35:49,793 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:49,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:49,794 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:49,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2022-11-18 18:35:50,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:35:50,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:35:50,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:35:50,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:50,220 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:35:50,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:35:50,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:50,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:35:50,383 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:35:50,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:35:50,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:35:50,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:50,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:50,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242232299] [2022-11-18 18:35:50,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1242232299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:50,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:50,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:35:50,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987934224] [2022-11-18 18:35:50,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:50,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:35:50,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:50,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:35:50,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:50,623 INFO L87 Difference]: Start difference. First operand 1425 states and 4863 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:51,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:51,060 INFO L93 Difference]: Finished difference Result 1649 states and 5433 transitions. [2022-11-18 18:35:51,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:35:51,061 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:35:51,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:51,064 INFO L225 Difference]: With dead ends: 1649 [2022-11-18 18:35:51,064 INFO L226 Difference]: Without dead ends: 1649 [2022-11-18 18:35:51,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:51,065 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 129 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:51,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 129 Unchecked, 0.4s Time] [2022-11-18 18:35:51,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2022-11-18 18:35:51,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1436. [2022-11-18 18:35:51,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1355 states have (on average 3.6051660516605164) internal successors, (4885), 1435 states have internal predecessors, (4885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:51,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 4885 transitions. [2022-11-18 18:35:51,090 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 4885 transitions. Word has length 12 [2022-11-18 18:35:51,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:51,090 INFO L495 AbstractCegarLoop]: Abstraction has 1436 states and 4885 transitions. [2022-11-18 18:35:51,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:51,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 4885 transitions. [2022-11-18 18:35:51,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:35:51,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:51,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:51,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (75)] Ended with exit code 0 [2022-11-18 18:35:51,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:51,291 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:35:51,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:51,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1035822745, now seen corresponding path program 1 times [2022-11-18 18:35:51,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:51,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544610016] [2022-11-18 18:35:51,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:51,292 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:51,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:51,293 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:51,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2022-11-18 18:35:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:51,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 18:35:51,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:51,754 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-18 18:35:51,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2022-11-18 18:35:51,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:51,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:35:51,927 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:35:51,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:35:52,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:35:52,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:52,056 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:52,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544610016] [2022-11-18 18:35:52,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544610016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:52,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:52,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:35:52,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926953788] [2022-11-18 18:35:52,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:52,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:35:52,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:52,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:35:52,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:35:52,057 INFO L87 Difference]: Start difference. First operand 1436 states and 4885 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:52,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:52,458 INFO L93 Difference]: Finished difference Result 1438 states and 4890 transitions. [2022-11-18 18:35:52,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:35:52,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:35:52,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:52,463 INFO L225 Difference]: With dead ends: 1438 [2022-11-18 18:35:52,463 INFO L226 Difference]: Without dead ends: 1438 [2022-11-18 18:35:52,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:35:52,463 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:52,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 46 Unchecked, 0.4s Time] [2022-11-18 18:35:52,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2022-11-18 18:35:52,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1438. [2022-11-18 18:35:52,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1357 states have (on average 3.6035372144436257) internal successors, (4890), 1437 states have internal predecessors, (4890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:52,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 4890 transitions. [2022-11-18 18:35:52,486 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 4890 transitions. Word has length 12 [2022-11-18 18:35:52,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:52,487 INFO L495 AbstractCegarLoop]: Abstraction has 1438 states and 4890 transitions. [2022-11-18 18:35:52,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:52,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 4890 transitions. [2022-11-18 18:35:52,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:35:52,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:52,487 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:52,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (76)] Ended with exit code 0 [2022-11-18 18:35:52,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:52,688 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:35:52,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:52,688 INFO L85 PathProgramCache]: Analyzing trace with hash -385776735, now seen corresponding path program 1 times [2022-11-18 18:35:52,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:52,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436874249] [2022-11-18 18:35:52,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:52,689 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:52,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:52,690 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:52,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2022-11-18 18:35:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:53,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 18:35:53,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:53,123 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-18 18:35:53,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2022-11-18 18:35:53,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:53,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:35:53,258 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:35:53,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:35:53,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:35:53,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:53,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:53,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436874249] [2022-11-18 18:35:53,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [436874249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:53,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:53,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:35:53,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689464303] [2022-11-18 18:35:53,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:53,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:35:53,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:53,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:35:53,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:35:53,369 INFO L87 Difference]: Start difference. First operand 1438 states and 4890 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:53,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:53,742 INFO L93 Difference]: Finished difference Result 1438 states and 4892 transitions. [2022-11-18 18:35:53,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:35:53,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:35:53,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:53,746 INFO L225 Difference]: With dead ends: 1438 [2022-11-18 18:35:53,746 INFO L226 Difference]: Without dead ends: 1429 [2022-11-18 18:35:53,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:35:53,747 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:53,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 46 Unchecked, 0.3s Time] [2022-11-18 18:35:53,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1429 states. [2022-11-18 18:35:53,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1429 to 1413. [2022-11-18 18:35:53,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1413 states, 1333 states have (on average 3.636909227306827) internal successors, (4848), 1412 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:53,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 4848 transitions. [2022-11-18 18:35:53,769 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 4848 transitions. Word has length 12 [2022-11-18 18:35:53,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:53,769 INFO L495 AbstractCegarLoop]: Abstraction has 1413 states and 4848 transitions. [2022-11-18 18:35:53,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:53,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 4848 transitions. [2022-11-18 18:35:53,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:35:53,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:53,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:53,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (77)] Ended with exit code 0 [2022-11-18 18:35:53,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:53,971 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:35:53,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:53,971 INFO L85 PathProgramCache]: Analyzing trace with hash -967293204, now seen corresponding path program 1 times [2022-11-18 18:35:53,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:53,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729309773] [2022-11-18 18:35:53,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:53,972 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:53,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:53,972 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:53,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2022-11-18 18:35:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:54,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:35:54,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:54,518 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:35:54,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:35:54,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:54,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:35:54,661 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:35:54,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:35:54,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:35:54,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:54,950 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:54,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729309773] [2022-11-18 18:35:54,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729309773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:54,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:54,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:35:54,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983445243] [2022-11-18 18:35:54,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:54,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:35:54,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:54,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:35:54,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:54,951 INFO L87 Difference]: Start difference. First operand 1413 states and 4848 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:55,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:55,340 INFO L93 Difference]: Finished difference Result 1415 states and 4849 transitions. [2022-11-18 18:35:55,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:35:55,340 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:35:55,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:55,344 INFO L225 Difference]: With dead ends: 1415 [2022-11-18 18:35:55,344 INFO L226 Difference]: Without dead ends: 1410 [2022-11-18 18:35:55,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:55,344 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:55,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 47 Unchecked, 0.4s Time] [2022-11-18 18:35:55,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2022-11-18 18:35:55,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 1409. [2022-11-18 18:35:55,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1409 states, 1329 states have (on average 3.6433408577878104) internal successors, (4842), 1408 states have internal predecessors, (4842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:55,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 4842 transitions. [2022-11-18 18:35:55,368 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 4842 transitions. Word has length 13 [2022-11-18 18:35:55,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:55,368 INFO L495 AbstractCegarLoop]: Abstraction has 1409 states and 4842 transitions. [2022-11-18 18:35:55,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:55,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 4842 transitions. [2022-11-18 18:35:55,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:35:55,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:55,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:55,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (78)] Ended with exit code 0 [2022-11-18 18:35:55,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:55,569 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:35:55,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:55,569 INFO L85 PathProgramCache]: Analyzing trace with hash 893847782, now seen corresponding path program 1 times [2022-11-18 18:35:55,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:55,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450717861] [2022-11-18 18:35:55,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:55,570 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:55,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:55,571 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:55,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2022-11-18 18:35:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:55,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:35:55,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:55,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:35:55,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:55,841 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:55,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450717861] [2022-11-18 18:35:55,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450717861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:55,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:55,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:35:55,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710479387] [2022-11-18 18:35:55,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:55,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:35:55,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:55,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:35:55,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:35:55,843 INFO L87 Difference]: Start difference. First operand 1409 states and 4842 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:56,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:56,482 INFO L93 Difference]: Finished difference Result 1595 states and 5441 transitions. [2022-11-18 18:35:56,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:35:56,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:35:56,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:56,487 INFO L225 Difference]: With dead ends: 1595 [2022-11-18 18:35:56,487 INFO L226 Difference]: Without dead ends: 1595 [2022-11-18 18:35:56,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:35:56,488 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:56,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 18:35:56,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1595 states. [2022-11-18 18:35:56,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1595 to 1595. [2022-11-18 18:35:56,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1515 states have (on average 3.591419141914191) internal successors, (5441), 1594 states have internal predecessors, (5441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:56,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 5441 transitions. [2022-11-18 18:35:56,514 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 5441 transitions. Word has length 13 [2022-11-18 18:35:56,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:56,514 INFO L495 AbstractCegarLoop]: Abstraction has 1595 states and 5441 transitions. [2022-11-18 18:35:56,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:56,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 5441 transitions. [2022-11-18 18:35:56,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:35:56,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:56,515 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:56,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:56,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:56,718 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:35:56,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:56,719 INFO L85 PathProgramCache]: Analyzing trace with hash 895813988, now seen corresponding path program 4 times [2022-11-18 18:35:56,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:56,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591282028] [2022-11-18 18:35:56,719 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 18:35:56,719 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:56,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:56,720 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:56,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2022-11-18 18:35:57,062 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 18:35:57,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:35:57,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:35:57,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:57,206 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:35:57,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:35:57,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:57,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:35:57,349 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:35:57,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:35:57,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:35:57,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:57,601 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:57,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591282028] [2022-11-18 18:35:57,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [591282028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:57,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:57,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:35:57,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918084706] [2022-11-18 18:35:57,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:57,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:35:57,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:57,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:35:57,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:57,602 INFO L87 Difference]: Start difference. First operand 1595 states and 5441 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:57,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:57,972 INFO L93 Difference]: Finished difference Result 1602 states and 5460 transitions. [2022-11-18 18:35:57,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:35:57,973 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:35:57,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:57,977 INFO L225 Difference]: With dead ends: 1602 [2022-11-18 18:35:57,977 INFO L226 Difference]: Without dead ends: 1602 [2022-11-18 18:35:57,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:57,977 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:57,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 84 Unchecked, 0.4s Time] [2022-11-18 18:35:57,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states. [2022-11-18 18:35:57,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 1601. [2022-11-18 18:35:58,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1521 states have (on average 3.589086127547666) internal successors, (5459), 1600 states have internal predecessors, (5459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:58,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 5459 transitions. [2022-11-18 18:35:58,004 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 5459 transitions. Word has length 13 [2022-11-18 18:35:58,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:58,004 INFO L495 AbstractCegarLoop]: Abstraction has 1601 states and 5459 transitions. [2022-11-18 18:35:58,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:58,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 5459 transitions. [2022-11-18 18:35:58,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:35:58,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:58,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:58,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (80)] Ended with exit code 0 [2022-11-18 18:35:58,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:58,206 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:35:58,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:58,206 INFO L85 PathProgramCache]: Analyzing trace with hash 893926739, now seen corresponding path program 1 times [2022-11-18 18:35:58,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:58,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313481881] [2022-11-18 18:35:58,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:58,207 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:58,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:58,208 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:58,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2022-11-18 18:35:58,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:58,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 18:35:58,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:58,760 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:35:58,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:35:58,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:58,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:35:58,916 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:35:58,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:35:59,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:35:59,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:59,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:59,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313481881] [2022-11-18 18:35:59,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313481881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:59,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:59,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:35:59,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475218774] [2022-11-18 18:35:59,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:59,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:35:59,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:59,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:35:59,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:59,219 INFO L87 Difference]: Start difference. First operand 1601 states and 5459 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:59,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:59,611 INFO L93 Difference]: Finished difference Result 1614 states and 5492 transitions. [2022-11-18 18:35:59,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:35:59,611 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:35:59,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:59,615 INFO L225 Difference]: With dead ends: 1614 [2022-11-18 18:35:59,615 INFO L226 Difference]: Without dead ends: 1614 [2022-11-18 18:35:59,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:35:59,616 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:59,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 93 Unchecked, 0.4s Time] [2022-11-18 18:35:59,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2022-11-18 18:35:59,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1602. [2022-11-18 18:35:59,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1602 states, 1522 states have (on average 3.5893561103810776) internal successors, (5463), 1601 states have internal predecessors, (5463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:59,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 5463 transitions. [2022-11-18 18:35:59,654 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 5463 transitions. Word has length 13 [2022-11-18 18:35:59,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:59,654 INFO L495 AbstractCegarLoop]: Abstraction has 1602 states and 5463 transitions. [2022-11-18 18:35:59,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:59,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 5463 transitions. [2022-11-18 18:35:59,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:35:59,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:59,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:59,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (81)] Ended with exit code 0 [2022-11-18 18:35:59,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:59,866 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:35:59,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:59,867 INFO L85 PathProgramCache]: Analyzing trace with hash 796957034, now seen corresponding path program 1 times [2022-11-18 18:35:59,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:59,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375861757] [2022-11-18 18:35:59,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:59,867 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:59,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:59,869 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:59,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2022-11-18 18:36:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:00,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:36:00,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:00,367 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:36:00,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:36:00,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:00,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:36:00,511 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:36:00,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:36:00,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:36:00,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:00,766 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:00,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375861757] [2022-11-18 18:36:00,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375861757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:00,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:00,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:36:00,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194299965] [2022-11-18 18:36:00,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:00,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:36:00,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:00,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:36:00,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:00,767 INFO L87 Difference]: Start difference. First operand 1602 states and 5463 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:01,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:01,137 INFO L93 Difference]: Finished difference Result 1606 states and 5466 transitions. [2022-11-18 18:36:01,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:36:01,138 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:01,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:01,142 INFO L225 Difference]: With dead ends: 1606 [2022-11-18 18:36:01,142 INFO L226 Difference]: Without dead ends: 1602 [2022-11-18 18:36:01,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:01,143 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:01,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 49 Unchecked, 0.4s Time] [2022-11-18 18:36:01,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states. [2022-11-18 18:36:01,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 1601. [2022-11-18 18:36:01,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1521 states have (on average 3.5904010519395135) internal successors, (5461), 1600 states have internal predecessors, (5461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:01,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 5461 transitions. [2022-11-18 18:36:01,168 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 5461 transitions. Word has length 13 [2022-11-18 18:36:01,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:01,168 INFO L495 AbstractCegarLoop]: Abstraction has 1601 states and 5461 transitions. [2022-11-18 18:36:01,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:01,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 5461 transitions. [2022-11-18 18:36:01,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:01,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:01,169 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:01,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (82)] Ended with exit code 0 [2022-11-18 18:36:01,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:01,370 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:01,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:01,370 INFO L85 PathProgramCache]: Analyzing trace with hash 922330148, now seen corresponding path program 5 times [2022-11-18 18:36:01,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:01,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [469421364] [2022-11-18 18:36:01,370 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 18:36:01,371 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:01,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:01,371 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:01,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2022-11-18 18:36:01,694 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:36:01,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:36:01,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:36:01,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:01,838 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:36:01,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:36:01,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:01,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:36:01,988 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:36:01,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:36:02,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:36:02,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:02,272 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:02,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [469421364] [2022-11-18 18:36:02,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [469421364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:02,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:02,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:36:02,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566623021] [2022-11-18 18:36:02,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:02,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:36:02,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:02,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:36:02,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:02,273 INFO L87 Difference]: Start difference. First operand 1601 states and 5461 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:02,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:02,638 INFO L93 Difference]: Finished difference Result 1611 states and 5492 transitions. [2022-11-18 18:36:02,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:36:02,639 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:02,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:02,643 INFO L225 Difference]: With dead ends: 1611 [2022-11-18 18:36:02,643 INFO L226 Difference]: Without dead ends: 1611 [2022-11-18 18:36:02,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:02,644 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:02,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 48 Unchecked, 0.4s Time] [2022-11-18 18:36:02,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2022-11-18 18:36:02,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1600. [2022-11-18 18:36:02,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1600 states, 1520 states have (on average 3.591447368421053) internal successors, (5459), 1599 states have internal predecessors, (5459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:02,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 5459 transitions. [2022-11-18 18:36:02,669 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 5459 transitions. Word has length 13 [2022-11-18 18:36:02,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:02,669 INFO L495 AbstractCegarLoop]: Abstraction has 1600 states and 5459 transitions. [2022-11-18 18:36:02,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:02,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 5459 transitions. [2022-11-18 18:36:02,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:02,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:02,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:02,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (83)] Ended with exit code 0 [2022-11-18 18:36:02,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:02,871 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:02,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:02,871 INFO L85 PathProgramCache]: Analyzing trace with hash 922324289, now seen corresponding path program 2 times [2022-11-18 18:36:02,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:02,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518359322] [2022-11-18 18:36:02,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:36:02,871 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:02,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:02,872 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:02,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2022-11-18 18:36:03,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:36:03,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:36:03,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:36:03,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:03,307 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:36:03,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:36:03,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:03,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:36:03,475 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:36:03,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:36:03,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:36:03,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:03,737 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:03,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518359322] [2022-11-18 18:36:03,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518359322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:03,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:03,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:36:03,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509554217] [2022-11-18 18:36:03,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:03,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:36:03,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:03,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:36:03,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:03,738 INFO L87 Difference]: Start difference. First operand 1600 states and 5459 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:04,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:04,095 INFO L93 Difference]: Finished difference Result 1607 states and 5474 transitions. [2022-11-18 18:36:04,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:36:04,096 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:04,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:04,100 INFO L225 Difference]: With dead ends: 1607 [2022-11-18 18:36:04,100 INFO L226 Difference]: Without dead ends: 1607 [2022-11-18 18:36:04,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:04,101 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:04,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 48 Unchecked, 0.3s Time] [2022-11-18 18:36:04,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2022-11-18 18:36:04,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1600. [2022-11-18 18:36:04,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1600 states, 1520 states have (on average 3.591447368421053) internal successors, (5459), 1599 states have internal predecessors, (5459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:04,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 5459 transitions. [2022-11-18 18:36:04,126 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 5459 transitions. Word has length 13 [2022-11-18 18:36:04,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:04,126 INFO L495 AbstractCegarLoop]: Abstraction has 1600 states and 5459 transitions. [2022-11-18 18:36:04,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:04,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 5459 transitions. [2022-11-18 18:36:04,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:04,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:04,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:04,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (84)] Ended with exit code 0 [2022-11-18 18:36:04,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:04,328 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:04,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:04,328 INFO L85 PathProgramCache]: Analyzing trace with hash 922235939, now seen corresponding path program 3 times [2022-11-18 18:36:04,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:04,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1058517601] [2022-11-18 18:36:04,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:36:04,328 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:04,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:04,329 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:04,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2022-11-18 18:36:04,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 18:36:04,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:36:04,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:36:04,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:04,772 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:36:04,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:36:04,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:04,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:36:04,925 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:36:04,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:36:05,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:36:05,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:05,252 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:05,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1058517601] [2022-11-18 18:36:05,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1058517601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:05,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:05,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:36:05,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368954729] [2022-11-18 18:36:05,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:05,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:36:05,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:05,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:36:05,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:05,254 INFO L87 Difference]: Start difference. First operand 1600 states and 5459 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:05,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:05,660 INFO L93 Difference]: Finished difference Result 1606 states and 5470 transitions. [2022-11-18 18:36:05,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:36:05,661 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:05,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:05,664 INFO L225 Difference]: With dead ends: 1606 [2022-11-18 18:36:05,665 INFO L226 Difference]: Without dead ends: 1606 [2022-11-18 18:36:05,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:05,665 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:05,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 49 Unchecked, 0.4s Time] [2022-11-18 18:36:05,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2022-11-18 18:36:05,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1595. [2022-11-18 18:36:05,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1515 states have (on average 3.592079207920792) internal successors, (5442), 1594 states have internal predecessors, (5442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:05,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 5442 transitions. [2022-11-18 18:36:05,696 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 5442 transitions. Word has length 13 [2022-11-18 18:36:05,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:05,696 INFO L495 AbstractCegarLoop]: Abstraction has 1595 states and 5442 transitions. [2022-11-18 18:36:05,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:05,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 5442 transitions. [2022-11-18 18:36:05,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:05,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:05,697 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:05,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (85)] Ended with exit code 0 [2022-11-18 18:36:05,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:05,897 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:05,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:05,897 INFO L85 PathProgramCache]: Analyzing trace with hash 922232684, now seen corresponding path program 2 times [2022-11-18 18:36:05,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:05,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518318389] [2022-11-18 18:36:05,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:36:05,898 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:05,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:05,899 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:05,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2022-11-18 18:36:06,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:36:06,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:36:06,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:36:06,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:06,339 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:36:06,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:36:06,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:06,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:36:06,495 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:36:06,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:36:06,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:36:06,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:06,784 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:06,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [518318389] [2022-11-18 18:36:06,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [518318389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:06,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:06,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:36:06,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270557074] [2022-11-18 18:36:06,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:06,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:36:06,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:06,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:36:06,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:06,786 INFO L87 Difference]: Start difference. First operand 1595 states and 5442 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:07,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:07,164 INFO L93 Difference]: Finished difference Result 1600 states and 5446 transitions. [2022-11-18 18:36:07,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:36:07,165 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:07,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:07,169 INFO L225 Difference]: With dead ends: 1600 [2022-11-18 18:36:07,169 INFO L226 Difference]: Without dead ends: 1599 [2022-11-18 18:36:07,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:07,169 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:07,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 48 Unchecked, 0.4s Time] [2022-11-18 18:36:07,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2022-11-18 18:36:07,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1595. [2022-11-18 18:36:07,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1515 states have (on average 3.591419141914191) internal successors, (5441), 1594 states have internal predecessors, (5441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:07,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 5441 transitions. [2022-11-18 18:36:07,211 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 5441 transitions. Word has length 13 [2022-11-18 18:36:07,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:07,211 INFO L495 AbstractCegarLoop]: Abstraction has 1595 states and 5441 transitions. [2022-11-18 18:36:07,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:07,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 5441 transitions. [2022-11-18 18:36:07,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:07,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:07,212 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:07,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:07,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:07,413 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:07,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:07,413 INFO L85 PathProgramCache]: Analyzing trace with hash 922234296, now seen corresponding path program 1 times [2022-11-18 18:36:07,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:07,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806445772] [2022-11-18 18:36:07,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:07,414 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:07,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:07,415 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:07,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2022-11-18 18:36:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:07,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 18:36:07,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:07,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:07,863 INFO L321 Elim1Store]: treesize reduction 81, result has 22.1 percent of original size [2022-11-18 18:36:07,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 37 [2022-11-18 18:36:07,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:07,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:36:08,060 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:36:08,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:36:08,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:36:08,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:08,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:08,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806445772] [2022-11-18 18:36:08,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806445772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:08,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:08,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:36:08,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468676461] [2022-11-18 18:36:08,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:08,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:36:08,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:08,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:36:08,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:36:08,505 INFO L87 Difference]: Start difference. First operand 1595 states and 5441 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:08,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:08,952 INFO L93 Difference]: Finished difference Result 1599 states and 5447 transitions. [2022-11-18 18:36:08,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:36:08,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:08,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:08,956 INFO L225 Difference]: With dead ends: 1599 [2022-11-18 18:36:08,956 INFO L226 Difference]: Without dead ends: 1599 [2022-11-18 18:36:08,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:08,957 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:08,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 79 Unchecked, 0.4s Time] [2022-11-18 18:36:08,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2022-11-18 18:36:08,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1596. [2022-11-18 18:36:08,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1596 states, 1516 states have (on average 3.5897097625329817) internal successors, (5442), 1595 states have internal predecessors, (5442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:08,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 5442 transitions. [2022-11-18 18:36:08,984 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 5442 transitions. Word has length 13 [2022-11-18 18:36:08,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:08,984 INFO L495 AbstractCegarLoop]: Abstraction has 1596 states and 5442 transitions. [2022-11-18 18:36:08,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:08,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 5442 transitions. [2022-11-18 18:36:08,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:08,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:08,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:08,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (87)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:09,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:09,186 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:09,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:09,186 INFO L85 PathProgramCache]: Analyzing trace with hash 922223384, now seen corresponding path program 3 times [2022-11-18 18:36:09,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:09,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1724112009] [2022-11-18 18:36:09,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:36:09,187 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:09,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:09,187 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:09,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2022-11-18 18:36:09,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 18:36:09,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:36:09,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:36:09,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:09,617 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:36:09,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:36:09,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:09,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:36:09,766 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:36:09,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:36:10,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:36:10,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:10,042 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:10,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1724112009] [2022-11-18 18:36:10,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1724112009] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:10,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:10,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:36:10,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297689438] [2022-11-18 18:36:10,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:10,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:36:10,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:10,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:36:10,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:10,043 INFO L87 Difference]: Start difference. First operand 1596 states and 5442 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:10,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:10,387 INFO L93 Difference]: Finished difference Result 1600 states and 5445 transitions. [2022-11-18 18:36:10,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:36:10,388 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:10,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:10,391 INFO L225 Difference]: With dead ends: 1600 [2022-11-18 18:36:10,391 INFO L226 Difference]: Without dead ends: 1598 [2022-11-18 18:36:10,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:10,392 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:10,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 80 Unchecked, 0.3s Time] [2022-11-18 18:36:10,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2022-11-18 18:36:10,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1596. [2022-11-18 18:36:10,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1596 states, 1516 states have (on average 3.5890501319261214) internal successors, (5441), 1595 states have internal predecessors, (5441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:10,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 5441 transitions. [2022-11-18 18:36:10,416 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 5441 transitions. Word has length 13 [2022-11-18 18:36:10,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:10,417 INFO L495 AbstractCegarLoop]: Abstraction has 1596 states and 5441 transitions. [2022-11-18 18:36:10,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:10,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 5441 transitions. [2022-11-18 18:36:10,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:10,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:10,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:10,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (88)] Ended with exit code 0 [2022-11-18 18:36:10,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:10,618 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:10,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:10,618 INFO L85 PathProgramCache]: Analyzing trace with hash 922273356, now seen corresponding path program 2 times [2022-11-18 18:36:10,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:10,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988276985] [2022-11-18 18:36:10,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:36:10,619 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:10,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:10,619 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:10,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2022-11-18 18:36:10,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:36:10,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:36:10,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 18:36:10,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:11,095 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:36:11,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:36:11,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:11,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:36:11,267 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:36:11,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:36:11,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:36:11,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:11,542 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:11,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988276985] [2022-11-18 18:36:11,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988276985] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:11,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:11,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:36:11,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913352772] [2022-11-18 18:36:11,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:11,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:36:11,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:11,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:36:11,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:11,543 INFO L87 Difference]: Start difference. First operand 1596 states and 5441 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:11,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:11,878 INFO L93 Difference]: Finished difference Result 1600 states and 5447 transitions. [2022-11-18 18:36:11,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:36:11,878 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:11,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:11,882 INFO L225 Difference]: With dead ends: 1600 [2022-11-18 18:36:11,882 INFO L226 Difference]: Without dead ends: 1600 [2022-11-18 18:36:11,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:11,883 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:11,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 80 Unchecked, 0.3s Time] [2022-11-18 18:36:11,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2022-11-18 18:36:11,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1597. [2022-11-18 18:36:11,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1597 states, 1517 states have (on average 3.5880026367831244) internal successors, (5443), 1596 states have internal predecessors, (5443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:11,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1597 states to 1597 states and 5443 transitions. [2022-11-18 18:36:11,921 INFO L78 Accepts]: Start accepts. Automaton has 1597 states and 5443 transitions. Word has length 13 [2022-11-18 18:36:11,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:11,921 INFO L495 AbstractCegarLoop]: Abstraction has 1597 states and 5443 transitions. [2022-11-18 18:36:11,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:11,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1597 states and 5443 transitions. [2022-11-18 18:36:11,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:11,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:11,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:11,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (89)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:12,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:12,135 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:12,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:12,135 INFO L85 PathProgramCache]: Analyzing trace with hash 922268024, now seen corresponding path program 1 times [2022-11-18 18:36:12,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:12,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1837005983] [2022-11-18 18:36:12,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:12,136 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:12,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:12,136 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:12,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2022-11-18 18:36:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:12,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:36:12,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:12,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:12,656 INFO L321 Elim1Store]: treesize reduction 81, result has 22.1 percent of original size [2022-11-18 18:36:12,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 37 [2022-11-18 18:36:12,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:12,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:36:12,793 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:36:12,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:36:12,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:36:12,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:12,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:12,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1837005983] [2022-11-18 18:36:12,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1837005983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:12,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:12,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:36:12,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794032579] [2022-11-18 18:36:12,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:12,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:36:12,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:12,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:36:12,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:36:12,997 INFO L87 Difference]: Start difference. First operand 1597 states and 5443 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:13,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:13,409 INFO L93 Difference]: Finished difference Result 1602 states and 5455 transitions. [2022-11-18 18:36:13,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:36:13,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:13,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:13,416 INFO L225 Difference]: With dead ends: 1602 [2022-11-18 18:36:13,416 INFO L226 Difference]: Without dead ends: 1602 [2022-11-18 18:36:13,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:13,417 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:13,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 80 Unchecked, 0.4s Time] [2022-11-18 18:36:13,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states. [2022-11-18 18:36:13,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 1598. [2022-11-18 18:36:13,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1518 states have (on average 3.587615283267457) internal successors, (5446), 1597 states have internal predecessors, (5446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:13,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 5446 transitions. [2022-11-18 18:36:13,446 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 5446 transitions. Word has length 13 [2022-11-18 18:36:13,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:13,446 INFO L495 AbstractCegarLoop]: Abstraction has 1598 states and 5446 transitions. [2022-11-18 18:36:13,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:13,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 5446 transitions. [2022-11-18 18:36:13,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:13,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:13,447 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:13,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (90)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:13,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:13,662 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:13,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:13,662 INFO L85 PathProgramCache]: Analyzing trace with hash 929083808, now seen corresponding path program 6 times [2022-11-18 18:36:13,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:13,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136511438] [2022-11-18 18:36:13,663 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 18:36:13,663 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:13,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:13,665 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:13,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2022-11-18 18:36:13,939 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-11-18 18:36:13,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:36:13,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:36:13,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:14,062 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-18 18:36:14,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2022-11-18 18:36:14,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:14,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:36:14,194 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:36:14,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:36:14,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:36:14,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:14,320 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:14,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136511438] [2022-11-18 18:36:14,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1136511438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:14,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:14,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:36:14,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392009245] [2022-11-18 18:36:14,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:14,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:36:14,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:14,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:36:14,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:36:14,321 INFO L87 Difference]: Start difference. First operand 1598 states and 5446 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:14,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:14,703 INFO L93 Difference]: Finished difference Result 1599 states and 5446 transitions. [2022-11-18 18:36:14,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:36:14,704 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:14,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:14,708 INFO L225 Difference]: With dead ends: 1599 [2022-11-18 18:36:14,708 INFO L226 Difference]: Without dead ends: 1599 [2022-11-18 18:36:14,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:36:14,709 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:14,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 46 Unchecked, 0.3s Time] [2022-11-18 18:36:14,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2022-11-18 18:36:14,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1594. [2022-11-18 18:36:14,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1514 states have (on average 3.5885072655217964) internal successors, (5433), 1593 states have internal predecessors, (5433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:14,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 5433 transitions. [2022-11-18 18:36:14,737 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 5433 transitions. Word has length 13 [2022-11-18 18:36:14,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:14,737 INFO L495 AbstractCegarLoop]: Abstraction has 1594 states and 5433 transitions. [2022-11-18 18:36:14,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:14,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 5433 transitions. [2022-11-18 18:36:14,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:14,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:14,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:14,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (91)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:14,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:14,944 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:14,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:14,944 INFO L85 PathProgramCache]: Analyzing trace with hash 925654154, now seen corresponding path program 4 times [2022-11-18 18:36:14,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:14,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996121338] [2022-11-18 18:36:14,944 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 18:36:14,944 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:14,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:14,945 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:14,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2022-11-18 18:36:15,358 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 18:36:15,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:36:15,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:36:15,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:15,503 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:36:15,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:36:15,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:15,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:36:15,646 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:36:15,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:36:15,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:36:15,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:15,901 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:15,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996121338] [2022-11-18 18:36:15,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1996121338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:15,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:15,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:36:15,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015218196] [2022-11-18 18:36:15,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:15,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:36:15,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:15,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:36:15,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:15,903 INFO L87 Difference]: Start difference. First operand 1594 states and 5433 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:16,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:16,251 INFO L93 Difference]: Finished difference Result 1597 states and 5435 transitions. [2022-11-18 18:36:16,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:36:16,252 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:16,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:16,256 INFO L225 Difference]: With dead ends: 1597 [2022-11-18 18:36:16,256 INFO L226 Difference]: Without dead ends: 1594 [2022-11-18 18:36:16,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:16,256 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:16,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 84 Unchecked, 0.3s Time] [2022-11-18 18:36:16,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2022-11-18 18:36:16,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1593. [2022-11-18 18:36:16,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1593 states, 1513 states have (on average 3.58955717118308) internal successors, (5431), 1592 states have internal predecessors, (5431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:16,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 5431 transitions. [2022-11-18 18:36:16,282 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 5431 transitions. Word has length 13 [2022-11-18 18:36:16,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:16,282 INFO L495 AbstractCegarLoop]: Abstraction has 1593 states and 5431 transitions. [2022-11-18 18:36:16,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:16,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 5431 transitions. [2022-11-18 18:36:16,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:16,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:16,283 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:16,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (92)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:16,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:16,483 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:16,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:16,484 INFO L85 PathProgramCache]: Analyzing trace with hash 927203286, now seen corresponding path program 3 times [2022-11-18 18:36:16,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:16,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [858382272] [2022-11-18 18:36:16,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:36:16,484 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:16,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:16,485 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:16,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2022-11-18 18:36:16,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 18:36:16,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:36:16,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:36:16,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:16,960 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:36:16,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:36:17,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:17,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:36:17,117 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:36:17,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:36:17,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:36:17,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:17,463 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:17,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [858382272] [2022-11-18 18:36:17,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [858382272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:17,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:17,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:36:17,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067217446] [2022-11-18 18:36:17,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:17,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:36:17,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:17,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:36:17,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:17,464 INFO L87 Difference]: Start difference. First operand 1593 states and 5431 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:17,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:17,901 INFO L93 Difference]: Finished difference Result 1597 states and 5437 transitions. [2022-11-18 18:36:17,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:36:17,902 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:17,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:17,905 INFO L225 Difference]: With dead ends: 1597 [2022-11-18 18:36:17,906 INFO L226 Difference]: Without dead ends: 1597 [2022-11-18 18:36:17,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:17,906 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:17,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 48 Unchecked, 0.4s Time] [2022-11-18 18:36:17,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1597 states. [2022-11-18 18:36:17,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1597 to 1595. [2022-11-18 18:36:17,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1515 states have (on average 3.5874587458745872) internal successors, (5435), 1594 states have internal predecessors, (5435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:17,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 5435 transitions. [2022-11-18 18:36:17,943 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 5435 transitions. Word has length 13 [2022-11-18 18:36:17,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:17,943 INFO L495 AbstractCegarLoop]: Abstraction has 1595 states and 5435 transitions. [2022-11-18 18:36:17,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:17,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 5435 transitions. [2022-11-18 18:36:17,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:17,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:17,944 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:17,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (93)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:18,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:18,157 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:18,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:18,157 INFO L85 PathProgramCache]: Analyzing trace with hash 927197954, now seen corresponding path program 2 times [2022-11-18 18:36:18,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:18,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [569764112] [2022-11-18 18:36:18,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:36:18,157 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:18,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:18,158 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:18,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2022-11-18 18:36:18,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:36:18,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:36:18,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:36:18,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:18,631 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:36:18,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:36:18,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:18,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:36:18,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:18,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:36:19,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:36:19,006 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:19,006 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:19,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [569764112] [2022-11-18 18:36:19,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [569764112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:19,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:19,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:36:19,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643384163] [2022-11-18 18:36:19,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:19,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:36:19,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:19,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:36:19,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:19,007 INFO L87 Difference]: Start difference. First operand 1595 states and 5435 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:19,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:19,607 INFO L93 Difference]: Finished difference Result 1619 states and 5509 transitions. [2022-11-18 18:36:19,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:36:19,608 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:19,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:19,611 INFO L225 Difference]: With dead ends: 1619 [2022-11-18 18:36:19,611 INFO L226 Difference]: Without dead ends: 1619 [2022-11-18 18:36:19,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:36:19,612 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:19,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 0 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 52 Unchecked, 0.5s Time] [2022-11-18 18:36:19,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2022-11-18 18:36:19,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1617. [2022-11-18 18:36:19,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1537 states have (on average 3.5816525699414443) internal successors, (5505), 1616 states have internal predecessors, (5505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:19,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 5505 transitions. [2022-11-18 18:36:19,636 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 5505 transitions. Word has length 13 [2022-11-18 18:36:19,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:19,637 INFO L495 AbstractCegarLoop]: Abstraction has 1617 states and 5505 transitions. [2022-11-18 18:36:19,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:19,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 5505 transitions. [2022-11-18 18:36:19,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:19,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:19,637 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:19,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (94)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:19,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:19,838 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:19,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:19,838 INFO L85 PathProgramCache]: Analyzing trace with hash 836112824, now seen corresponding path program 3 times [2022-11-18 18:36:19,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:19,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892075062] [2022-11-18 18:36:19,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:36:19,839 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:19,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:19,843 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:19,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (95)] Waiting until timeout for monitored process [2022-11-18 18:36:20,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 18:36:20,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:36:20,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:36:20,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:20,299 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:36:20,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:36:20,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:20,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:36:20,438 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:36:20,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:36:20,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:36:20,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:20,659 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:20,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892075062] [2022-11-18 18:36:20,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892075062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:20,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:20,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:36:20,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252773650] [2022-11-18 18:36:20,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:20,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:36:20,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:20,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:36:20,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:20,660 INFO L87 Difference]: Start difference. First operand 1617 states and 5505 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:21,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:21,024 INFO L93 Difference]: Finished difference Result 1630 states and 5544 transitions. [2022-11-18 18:36:21,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:36:21,025 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:21,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:21,029 INFO L225 Difference]: With dead ends: 1630 [2022-11-18 18:36:21,029 INFO L226 Difference]: Without dead ends: 1630 [2022-11-18 18:36:21,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:21,029 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:21,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 52 Unchecked, 0.4s Time] [2022-11-18 18:36:21,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2022-11-18 18:36:21,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1616. [2022-11-18 18:36:21,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1616 states, 1536 states have (on average 3.58203125) internal successors, (5502), 1615 states have internal predecessors, (5502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:21,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 5502 transitions. [2022-11-18 18:36:21,054 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 5502 transitions. Word has length 13 [2022-11-18 18:36:21,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:21,054 INFO L495 AbstractCegarLoop]: Abstraction has 1616 states and 5502 transitions. [2022-11-18 18:36:21,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:21,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 5502 transitions. [2022-11-18 18:36:21,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:21,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:21,055 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:21,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (95)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:21,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:21,256 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:21,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:21,256 INFO L85 PathProgramCache]: Analyzing trace with hash 844980126, now seen corresponding path program 4 times [2022-11-18 18:36:21,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:21,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875189328] [2022-11-18 18:36:21,256 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 18:36:21,256 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:21,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:21,257 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:21,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2022-11-18 18:36:21,639 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 18:36:21,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:36:21,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:36:21,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:21,774 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:36:21,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:36:21,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:21,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:36:21,905 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:36:21,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:36:22,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:36:22,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:22,141 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:22,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875189328] [2022-11-18 18:36:22,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875189328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:22,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:22,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:36:22,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344839721] [2022-11-18 18:36:22,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:22,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:36:22,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:22,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:36:22,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:22,142 INFO L87 Difference]: Start difference. First operand 1616 states and 5502 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:22,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:22,506 INFO L93 Difference]: Finished difference Result 1618 states and 5504 transitions. [2022-11-18 18:36:22,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:36:22,507 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:22,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:22,510 INFO L225 Difference]: With dead ends: 1618 [2022-11-18 18:36:22,510 INFO L226 Difference]: Without dead ends: 1618 [2022-11-18 18:36:22,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:22,511 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:22,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 49 Unchecked, 0.4s Time] [2022-11-18 18:36:22,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1618 states. [2022-11-18 18:36:22,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1618 to 1614. [2022-11-18 18:36:22,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1534 states have (on average 3.5840938722294653) internal successors, (5498), 1613 states have internal predecessors, (5498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:22,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 5498 transitions. [2022-11-18 18:36:22,535 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 5498 transitions. Word has length 13 [2022-11-18 18:36:22,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:22,536 INFO L495 AbstractCegarLoop]: Abstraction has 1614 states and 5498 transitions. [2022-11-18 18:36:22,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:22,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 5498 transitions. [2022-11-18 18:36:22,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:22,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:22,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:22,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (96)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:22,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:22,737 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:22,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:22,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1831569234, now seen corresponding path program 1 times [2022-11-18 18:36:22,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:22,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970400155] [2022-11-18 18:36:22,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:22,738 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:22,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:22,739 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:22,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (97)] Waiting until timeout for monitored process [2022-11-18 18:36:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:23,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:36:23,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:23,287 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:36:23,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:36:23,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:23,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:36:23,451 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:36:23,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:36:23,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:36:23,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:23,706 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:23,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970400155] [2022-11-18 18:36:23,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970400155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:23,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:23,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:36:23,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11544505] [2022-11-18 18:36:23,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:23,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:36:23,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:23,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:36:23,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:23,708 INFO L87 Difference]: Start difference. First operand 1614 states and 5498 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:24,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:24,077 INFO L93 Difference]: Finished difference Result 1631 states and 5516 transitions. [2022-11-18 18:36:24,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:36:24,078 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:24,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:24,082 INFO L225 Difference]: With dead ends: 1631 [2022-11-18 18:36:24,082 INFO L226 Difference]: Without dead ends: 1631 [2022-11-18 18:36:24,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:24,082 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:24,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 51 Unchecked, 0.4s Time] [2022-11-18 18:36:24,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2022-11-18 18:36:24,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1617. [2022-11-18 18:36:24,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1537 states have (on average 3.579050097592713) internal successors, (5501), 1616 states have internal predecessors, (5501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:24,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 5501 transitions. [2022-11-18 18:36:24,108 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 5501 transitions. Word has length 13 [2022-11-18 18:36:24,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:24,109 INFO L495 AbstractCegarLoop]: Abstraction has 1617 states and 5501 transitions. [2022-11-18 18:36:24,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:24,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 5501 transitions. [2022-11-18 18:36:24,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:24,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:24,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:24,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (97)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:24,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:24,310 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:24,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:24,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1891608515, now seen corresponding path program 1 times [2022-11-18 18:36:24,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:24,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489252499] [2022-11-18 18:36:24,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:24,311 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:24,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:24,312 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:24,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (98)] Waiting until timeout for monitored process [2022-11-18 18:36:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:24,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:36:24,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:24,855 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:36:24,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:36:24,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:24,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:36:25,010 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:36:25,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:36:25,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:36:25,263 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:25,263 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:25,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489252499] [2022-11-18 18:36:25,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489252499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:25,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:25,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:36:25,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275672372] [2022-11-18 18:36:25,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:25,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:36:25,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:25,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:36:25,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:25,265 INFO L87 Difference]: Start difference. First operand 1617 states and 5501 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:25,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:25,620 INFO L93 Difference]: Finished difference Result 1647 states and 5561 transitions. [2022-11-18 18:36:25,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:36:25,621 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:25,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:25,625 INFO L225 Difference]: With dead ends: 1647 [2022-11-18 18:36:25,625 INFO L226 Difference]: Without dead ends: 1647 [2022-11-18 18:36:25,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:25,626 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:25,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 0 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 91 Unchecked, 0.3s Time] [2022-11-18 18:36:25,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2022-11-18 18:36:25,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1621. [2022-11-18 18:36:25,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1621 states, 1541 states have (on average 3.5781959766385465) internal successors, (5514), 1620 states have internal predecessors, (5514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:25,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 5514 transitions. [2022-11-18 18:36:25,653 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 5514 transitions. Word has length 13 [2022-11-18 18:36:25,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:25,653 INFO L495 AbstractCegarLoop]: Abstraction has 1621 states and 5514 transitions. [2022-11-18 18:36:25,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:25,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 5514 transitions. [2022-11-18 18:36:25,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:25,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:25,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:25,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (98)] Ended with exit code 0 [2022-11-18 18:36:25,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:25,855 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:25,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:25,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1888480460, now seen corresponding path program 1 times [2022-11-18 18:36:25,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:25,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692357824] [2022-11-18 18:36:25,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:25,855 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:25,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:25,856 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:25,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (99)] Waiting until timeout for monitored process [2022-11-18 18:36:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:26,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:36:26,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:26,417 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:36:26,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:36:26,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:26,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:36:26,559 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:36:26,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:36:26,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:36:26,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:26,823 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:26,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692357824] [2022-11-18 18:36:26,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692357824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:26,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:26,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:36:26,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604953894] [2022-11-18 18:36:26,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:26,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:36:26,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:26,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:36:26,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:26,825 INFO L87 Difference]: Start difference. First operand 1621 states and 5514 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:27,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:27,177 INFO L93 Difference]: Finished difference Result 1639 states and 5532 transitions. [2022-11-18 18:36:27,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:36:27,178 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:27,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:27,182 INFO L225 Difference]: With dead ends: 1639 [2022-11-18 18:36:27,182 INFO L226 Difference]: Without dead ends: 1635 [2022-11-18 18:36:27,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:27,183 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:27,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 84 Unchecked, 0.3s Time] [2022-11-18 18:36:27,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1635 states. [2022-11-18 18:36:27,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1635 to 1621. [2022-11-18 18:36:27,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1621 states, 1541 states have (on average 3.5775470473718363) internal successors, (5513), 1620 states have internal predecessors, (5513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:27,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 5513 transitions. [2022-11-18 18:36:27,229 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 5513 transitions. Word has length 13 [2022-11-18 18:36:27,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:27,230 INFO L495 AbstractCegarLoop]: Abstraction has 1621 states and 5513 transitions. [2022-11-18 18:36:27,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:27,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 5513 transitions. [2022-11-18 18:36:27,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:27,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:27,231 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:27,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (99)] Ended with exit code 0 [2022-11-18 18:36:27,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:27,431 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:27,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:27,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1892524565, now seen corresponding path program 2 times [2022-11-18 18:36:27,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:27,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659494385] [2022-11-18 18:36:27,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:36:27,432 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:27,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:27,433 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:27,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (100)] Waiting until timeout for monitored process [2022-11-18 18:36:27,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:36:27,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:36:27,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:36:27,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:27,891 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:36:27,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:36:27,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:27,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:36:28,039 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:36:28,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:36:28,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:36:28,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:28,308 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:28,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659494385] [2022-11-18 18:36:28,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659494385] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:28,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:28,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:36:28,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889896012] [2022-11-18 18:36:28,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:28,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:36:28,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:28,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:36:28,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:28,309 INFO L87 Difference]: Start difference. First operand 1621 states and 5513 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:28,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:28,660 INFO L93 Difference]: Finished difference Result 1640 states and 5538 transitions. [2022-11-18 18:36:28,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:36:28,661 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:28,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:28,665 INFO L225 Difference]: With dead ends: 1640 [2022-11-18 18:36:28,665 INFO L226 Difference]: Without dead ends: 1640 [2022-11-18 18:36:28,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:28,665 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:28,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 49 Unchecked, 0.3s Time] [2022-11-18 18:36:28,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2022-11-18 18:36:28,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1622. [2022-11-18 18:36:28,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1542 states have (on average 3.5765239948119327) internal successors, (5515), 1621 states have internal predecessors, (5515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:28,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 5515 transitions. [2022-11-18 18:36:28,692 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 5515 transitions. Word has length 13 [2022-11-18 18:36:28,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:28,692 INFO L495 AbstractCegarLoop]: Abstraction has 1622 states and 5515 transitions. [2022-11-18 18:36:28,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:28,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 5515 transitions. [2022-11-18 18:36:28,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:28,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:28,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:28,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (100)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:28,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:28,894 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:28,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:28,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1892521620, now seen corresponding path program 1 times [2022-11-18 18:36:28,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:28,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699550480] [2022-11-18 18:36:28,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:28,894 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:28,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:28,895 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:28,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (101)] Waiting until timeout for monitored process [2022-11-18 18:36:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:29,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:36:29,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:29,402 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-18 18:36:29,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2022-11-18 18:36:29,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:29,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:36:29,532 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:36:29,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:36:29,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:36:29,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:29,653 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:29,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699550480] [2022-11-18 18:36:29,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699550480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:29,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:29,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:36:29,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873181697] [2022-11-18 18:36:29,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:29,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:36:29,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:29,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:36:29,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:36:29,654 INFO L87 Difference]: Start difference. First operand 1622 states and 5515 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:30,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:30,031 INFO L93 Difference]: Finished difference Result 1637 states and 5533 transitions. [2022-11-18 18:36:30,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:36:30,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:30,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:30,036 INFO L225 Difference]: With dead ends: 1637 [2022-11-18 18:36:30,036 INFO L226 Difference]: Without dead ends: 1637 [2022-11-18 18:36:30,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:36:30,036 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:30,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 47 Unchecked, 0.3s Time] [2022-11-18 18:36:30,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2022-11-18 18:36:30,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1623. [2022-11-18 18:36:30,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1623 states, 1543 states have (on average 3.576150356448477) internal successors, (5518), 1622 states have internal predecessors, (5518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:30,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 5518 transitions. [2022-11-18 18:36:30,062 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 5518 transitions. Word has length 13 [2022-11-18 18:36:30,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:30,063 INFO L495 AbstractCegarLoop]: Abstraction has 1623 states and 5518 transitions. [2022-11-18 18:36:30,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:30,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 5518 transitions. [2022-11-18 18:36:30,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:30,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:30,063 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:30,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (101)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:30,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:30,264 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:30,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:30,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1892521310, now seen corresponding path program 2 times [2022-11-18 18:36:30,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:30,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [257966992] [2022-11-18 18:36:30,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:36:30,265 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:30,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:30,265 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:30,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (102)] Waiting until timeout for monitored process [2022-11-18 18:36:30,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:36:30,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:36:30,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:36:30,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:30,737 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:36:30,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:36:30,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:30,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:36:30,876 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:36:30,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:36:31,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:36:31,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:31,169 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:31,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [257966992] [2022-11-18 18:36:31,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [257966992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:31,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:31,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:36:31,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262218779] [2022-11-18 18:36:31,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:31,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:36:31,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:31,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:36:31,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:31,171 INFO L87 Difference]: Start difference. First operand 1623 states and 5518 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:31,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:31,530 INFO L93 Difference]: Finished difference Result 1640 states and 5537 transitions. [2022-11-18 18:36:31,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:36:31,531 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:31,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:31,535 INFO L225 Difference]: With dead ends: 1640 [2022-11-18 18:36:31,535 INFO L226 Difference]: Without dead ends: 1640 [2022-11-18 18:36:31,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:31,536 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:31,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 50 Unchecked, 0.3s Time] [2022-11-18 18:36:31,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2022-11-18 18:36:31,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1623. [2022-11-18 18:36:31,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1623 states, 1543 states have (on average 3.576150356448477) internal successors, (5518), 1622 states have internal predecessors, (5518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:31,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 5518 transitions. [2022-11-18 18:36:31,562 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 5518 transitions. Word has length 13 [2022-11-18 18:36:31,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:31,563 INFO L495 AbstractCegarLoop]: Abstraction has 1623 states and 5518 transitions. [2022-11-18 18:36:31,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:31,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 5518 transitions. [2022-11-18 18:36:31,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:31,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:31,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:31,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (102)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:31,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:31,770 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:31,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:31,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1892522922, now seen corresponding path program 1 times [2022-11-18 18:36:31,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:31,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589715292] [2022-11-18 18:36:31,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:31,771 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:31,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:31,772 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:31,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (103)] Waiting until timeout for monitored process [2022-11-18 18:36:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:32,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:36:32,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:32,352 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:36:32,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:36:32,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:32,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:36:32,500 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:36:32,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:36:32,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:36:32,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:32,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:32,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589715292] [2022-11-18 18:36:32,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589715292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:32,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:32,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:36:32,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728845447] [2022-11-18 18:36:32,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:32,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:36:32,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:32,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:36:32,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:32,839 INFO L87 Difference]: Start difference. First operand 1623 states and 5518 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:33,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:33,210 INFO L93 Difference]: Finished difference Result 1643 states and 5546 transitions. [2022-11-18 18:36:33,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:36:33,210 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:33,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:33,215 INFO L225 Difference]: With dead ends: 1643 [2022-11-18 18:36:33,215 INFO L226 Difference]: Without dead ends: 1643 [2022-11-18 18:36:33,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:33,215 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:33,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 49 Unchecked, 0.4s Time] [2022-11-18 18:36:33,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2022-11-18 18:36:33,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1624. [2022-11-18 18:36:33,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1544 states have (on average 3.5751295336787563) internal successors, (5520), 1623 states have internal predecessors, (5520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:33,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 5520 transitions. [2022-11-18 18:36:33,242 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 5520 transitions. Word has length 13 [2022-11-18 18:36:33,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:33,242 INFO L495 AbstractCegarLoop]: Abstraction has 1624 states and 5520 transitions. [2022-11-18 18:36:33,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:33,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 5520 transitions. [2022-11-18 18:36:33,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:33,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:33,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:33,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (103)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:33,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:33,445 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:33,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:33,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1892732885, now seen corresponding path program 3 times [2022-11-18 18:36:33,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:33,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757468463] [2022-11-18 18:36:33,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:36:33,446 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:33,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:33,447 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:33,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (104)] Waiting until timeout for monitored process [2022-11-18 18:36:33,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 18:36:33,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:36:33,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:36:33,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:33,930 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:36:33,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:36:34,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:34,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:36:34,077 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:36:34,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:36:34,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:36:34,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:34,354 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:34,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757468463] [2022-11-18 18:36:34,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757468463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:34,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:34,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:36:34,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492032430] [2022-11-18 18:36:34,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:34,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:36:34,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:34,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:36:34,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:34,355 INFO L87 Difference]: Start difference. First operand 1624 states and 5520 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:34,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:34,706 INFO L93 Difference]: Finished difference Result 1650 states and 5568 transitions. [2022-11-18 18:36:34,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:36:34,707 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:34,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:34,711 INFO L225 Difference]: With dead ends: 1650 [2022-11-18 18:36:34,711 INFO L226 Difference]: Without dead ends: 1650 [2022-11-18 18:36:34,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:34,712 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:34,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 52 Unchecked, 0.3s Time] [2022-11-18 18:36:34,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2022-11-18 18:36:34,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1625. [2022-11-18 18:36:34,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1625 states, 1545 states have (on average 3.5754045307443367) internal successors, (5524), 1624 states have internal predecessors, (5524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:34,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 5524 transitions. [2022-11-18 18:36:34,757 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 5524 transitions. Word has length 13 [2022-11-18 18:36:34,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:34,757 INFO L495 AbstractCegarLoop]: Abstraction has 1625 states and 5524 transitions. [2022-11-18 18:36:34,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:34,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 5524 transitions. [2022-11-18 18:36:34,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:34,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:34,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:34,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (104)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:34,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:34,958 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:34,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:34,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1892631980, now seen corresponding path program 3 times [2022-11-18 18:36:34,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:34,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580907977] [2022-11-18 18:36:34,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:36:34,960 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:34,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:34,960 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:34,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (105)] Waiting until timeout for monitored process [2022-11-18 18:36:35,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 18:36:35,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:36:35,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:36:35,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:35,435 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:36:35,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:36:35,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:35,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:36:35,586 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:36:35,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:36:35,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:36:35,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:35,868 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:35,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580907977] [2022-11-18 18:36:35,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1580907977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:35,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:35,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:36:35,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230721217] [2022-11-18 18:36:35,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:35,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:36:35,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:35,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:36:35,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:35,870 INFO L87 Difference]: Start difference. First operand 1625 states and 5524 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:36,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:36,226 INFO L93 Difference]: Finished difference Result 1641 states and 5541 transitions. [2022-11-18 18:36:36,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:36:36,227 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:36,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:36,231 INFO L225 Difference]: With dead ends: 1641 [2022-11-18 18:36:36,231 INFO L226 Difference]: Without dead ends: 1641 [2022-11-18 18:36:36,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:36,232 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:36,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 51 Unchecked, 0.3s Time] [2022-11-18 18:36:36,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2022-11-18 18:36:36,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1626. [2022-11-18 18:36:36,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1546 states have (on average 3.573738680465718) internal successors, (5525), 1625 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:36,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 5525 transitions. [2022-11-18 18:36:36,271 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 5525 transitions. Word has length 13 [2022-11-18 18:36:36,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:36,272 INFO L495 AbstractCegarLoop]: Abstraction has 1626 states and 5525 transitions. [2022-11-18 18:36:36,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:36,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 5525 transitions. [2022-11-18 18:36:36,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:36,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:36,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:36,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (105)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:36,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:36,486 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:36,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:36,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1892681952, now seen corresponding path program 2 times [2022-11-18 18:36:36,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:36,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627390070] [2022-11-18 18:36:36,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:36:36,487 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:36,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:36,488 INFO L229 MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:36,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (106)] Waiting until timeout for monitored process [2022-11-18 18:36:36,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:36:36,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:36:36,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 18:36:36,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:36,968 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:36:36,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:36:37,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:37,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:36:37,117 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:36:37,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:36:37,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:36:37,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:37,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:37,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627390070] [2022-11-18 18:36:37,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627390070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:37,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:37,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:36:37,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956162196] [2022-11-18 18:36:37,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:37,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:36:37,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:37,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:36:37,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:37,399 INFO L87 Difference]: Start difference. First operand 1626 states and 5525 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:37,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:37,768 INFO L93 Difference]: Finished difference Result 1646 states and 5552 transitions. [2022-11-18 18:36:37,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:36:37,768 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:37,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:37,774 INFO L225 Difference]: With dead ends: 1646 [2022-11-18 18:36:37,774 INFO L226 Difference]: Without dead ends: 1646 [2022-11-18 18:36:37,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:37,775 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:37,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 50 Unchecked, 0.4s Time] [2022-11-18 18:36:37,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2022-11-18 18:36:37,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1627. [2022-11-18 18:36:37,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1627 states, 1547 states have (on average 3.572721396250808) internal successors, (5527), 1626 states have internal predecessors, (5527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:37,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 5527 transitions. [2022-11-18 18:36:37,813 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 5527 transitions. Word has length 13 [2022-11-18 18:36:37,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:37,813 INFO L495 AbstractCegarLoop]: Abstraction has 1627 states and 5527 transitions. [2022-11-18 18:36:37,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:37,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 5527 transitions. [2022-11-18 18:36:37,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:37,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:37,814 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:37,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (106)] Ended with exit code 0 [2022-11-18 18:36:38,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:38,022 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:38,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:38,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1890029592, now seen corresponding path program 3 times [2022-11-18 18:36:38,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:38,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1955849652] [2022-11-18 18:36:38,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:36:38,023 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:38,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:38,024 INFO L229 MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:38,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (107)] Waiting until timeout for monitored process [2022-11-18 18:36:38,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 18:36:38,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:36:38,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 18:36:38,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:38,503 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:36:38,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:36:38,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:38,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:36:38,648 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:36:38,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:36:38,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:36:38,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:38,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:38,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1955849652] [2022-11-18 18:36:38,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1955849652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:38,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:38,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:36:38,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529174913] [2022-11-18 18:36:38,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:38,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:36:38,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:38,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:36:38,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:38,924 INFO L87 Difference]: Start difference. First operand 1627 states and 5527 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:39,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:39,273 INFO L93 Difference]: Finished difference Result 1646 states and 5552 transitions. [2022-11-18 18:36:39,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:36:39,274 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:39,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:39,278 INFO L225 Difference]: With dead ends: 1646 [2022-11-18 18:36:39,278 INFO L226 Difference]: Without dead ends: 1646 [2022-11-18 18:36:39,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:39,278 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:39,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 51 Unchecked, 0.3s Time] [2022-11-18 18:36:39,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2022-11-18 18:36:39,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1628. [2022-11-18 18:36:39,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1628 states, 1548 states have (on average 3.5717054263565893) internal successors, (5529), 1627 states have internal predecessors, (5529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:39,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 5529 transitions. [2022-11-18 18:36:39,306 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 5529 transitions. Word has length 13 [2022-11-18 18:36:39,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:39,306 INFO L495 AbstractCegarLoop]: Abstraction has 1628 states and 5529 transitions. [2022-11-18 18:36:39,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:39,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 5529 transitions. [2022-11-18 18:36:39,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:39,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:39,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:39,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (107)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:39,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:39,507 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:39,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:39,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1841400264, now seen corresponding path program 2 times [2022-11-18 18:36:39,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:39,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429870791] [2022-11-18 18:36:39,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:36:39,508 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:39,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:39,509 INFO L229 MonitoredProcess]: Starting monitored process 108 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:39,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (108)] Waiting until timeout for monitored process [2022-11-18 18:36:39,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:36:39,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:36:39,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:36:39,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:40,012 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:36:40,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:36:40,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:40,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:36:40,162 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:36:40,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:36:40,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:36:40,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:40,419 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:40,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429870791] [2022-11-18 18:36:40,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429870791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:40,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:40,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:36:40,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156704541] [2022-11-18 18:36:40,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:40,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:36:40,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:40,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:36:40,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:40,421 INFO L87 Difference]: Start difference. First operand 1628 states and 5529 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:40,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:40,794 INFO L93 Difference]: Finished difference Result 1644 states and 5546 transitions. [2022-11-18 18:36:40,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:36:40,795 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:40,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:40,800 INFO L225 Difference]: With dead ends: 1644 [2022-11-18 18:36:40,801 INFO L226 Difference]: Without dead ends: 1644 [2022-11-18 18:36:40,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:40,801 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:40,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 49 Unchecked, 0.4s Time] [2022-11-18 18:36:40,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2022-11-18 18:36:40,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1627. [2022-11-18 18:36:40,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1627 states, 1547 states have (on average 3.5733678086619265) internal successors, (5528), 1626 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:40,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 5528 transitions. [2022-11-18 18:36:40,841 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 5528 transitions. Word has length 13 [2022-11-18 18:36:40,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:40,842 INFO L495 AbstractCegarLoop]: Abstraction has 1627 states and 5528 transitions. [2022-11-18 18:36:40,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:40,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 5528 transitions. [2022-11-18 18:36:40,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:40,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:40,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:40,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (108)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:41,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:41,056 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:41,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:41,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1834135104, now seen corresponding path program 3 times [2022-11-18 18:36:41,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:41,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1895587860] [2022-11-18 18:36:41,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:36:41,057 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:41,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:41,060 INFO L229 MonitoredProcess]: Starting monitored process 109 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:41,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (109)] Waiting until timeout for monitored process [2022-11-18 18:36:41,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 18:36:41,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:36:41,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:36:41,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:41,590 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:36:41,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:36:41,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:41,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:36:41,728 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:36:41,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:36:41,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:36:41,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:41,976 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:41,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1895587860] [2022-11-18 18:36:41,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1895587860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:41,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:41,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:36:41,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870013364] [2022-11-18 18:36:41,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:41,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:36:41,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:41,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:36:41,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:41,977 INFO L87 Difference]: Start difference. First operand 1627 states and 5528 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:42,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:42,319 INFO L93 Difference]: Finished difference Result 1643 states and 5545 transitions. [2022-11-18 18:36:42,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:36:42,320 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:42,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:42,324 INFO L225 Difference]: With dead ends: 1643 [2022-11-18 18:36:42,324 INFO L226 Difference]: Without dead ends: 1643 [2022-11-18 18:36:42,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:42,324 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:42,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 49 Unchecked, 0.3s Time] [2022-11-18 18:36:42,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2022-11-18 18:36:42,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1626. [2022-11-18 18:36:42,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1546 states have (on average 3.57503234152652) internal successors, (5527), 1625 states have internal predecessors, (5527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:42,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 5527 transitions. [2022-11-18 18:36:42,368 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 5527 transitions. Word has length 13 [2022-11-18 18:36:42,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:42,368 INFO L495 AbstractCegarLoop]: Abstraction has 1626 states and 5527 transitions. [2022-11-18 18:36:42,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:42,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 5527 transitions. [2022-11-18 18:36:42,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:42,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:42,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:42,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (109)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:42,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:42,569 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:42,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:42,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1834020714, now seen corresponding path program 4 times [2022-11-18 18:36:42,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:42,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060674415] [2022-11-18 18:36:42,570 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 18:36:42,570 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:42,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:42,571 INFO L229 MonitoredProcess]: Starting monitored process 110 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:42,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (110)] Waiting until timeout for monitored process [2022-11-18 18:36:42,986 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 18:36:42,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:36:42,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:36:42,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:43,128 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:36:43,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:36:43,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:43,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:36:43,277 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:36:43,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:36:43,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:36:43,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:43,551 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:43,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060674415] [2022-11-18 18:36:43,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060674415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:43,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:43,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:36:43,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959722972] [2022-11-18 18:36:43,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:43,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:36:43,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:43,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:36:43,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:43,552 INFO L87 Difference]: Start difference. First operand 1626 states and 5527 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:43,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:43,903 INFO L93 Difference]: Finished difference Result 1643 states and 5545 transitions. [2022-11-18 18:36:43,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:36:43,904 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:43,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:43,908 INFO L225 Difference]: With dead ends: 1643 [2022-11-18 18:36:43,908 INFO L226 Difference]: Without dead ends: 1643 [2022-11-18 18:36:43,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:43,908 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:43,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 81 Unchecked, 0.3s Time] [2022-11-18 18:36:43,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2022-11-18 18:36:43,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1626. [2022-11-18 18:36:43,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1546 states have (on average 3.57503234152652) internal successors, (5527), 1625 states have internal predecessors, (5527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:43,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 5527 transitions. [2022-11-18 18:36:43,932 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 5527 transitions. Word has length 13 [2022-11-18 18:36:43,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:43,933 INFO L495 AbstractCegarLoop]: Abstraction has 1626 states and 5527 transitions. [2022-11-18 18:36:43,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:43,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 5527 transitions. [2022-11-18 18:36:43,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:43,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:43,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:43,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (110)] Ended with exit code 0 [2022-11-18 18:36:44,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:44,134 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:44,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:44,134 INFO L85 PathProgramCache]: Analyzing trace with hash 2043283637, now seen corresponding path program 1 times [2022-11-18 18:36:44,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:44,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932037895] [2022-11-18 18:36:44,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:44,135 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:44,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:44,135 INFO L229 MonitoredProcess]: Starting monitored process 111 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:44,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (111)] Waiting until timeout for monitored process [2022-11-18 18:36:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:44,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:36:44,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:44,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:36:44,682 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:36:44,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:36:44,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:36:44,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:44,745 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:44,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932037895] [2022-11-18 18:36:44,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [932037895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:44,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:44,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:36:44,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603943701] [2022-11-18 18:36:44,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:44,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:36:44,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:44,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:36:44,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:36:44,746 INFO L87 Difference]: Start difference. First operand 1626 states and 5527 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:45,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:45,137 INFO L93 Difference]: Finished difference Result 1257 states and 4146 transitions. [2022-11-18 18:36:45,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:36:45,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:45,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:45,140 INFO L225 Difference]: With dead ends: 1257 [2022-11-18 18:36:45,140 INFO L226 Difference]: Without dead ends: 1257 [2022-11-18 18:36:45,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:36:45,141 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 79 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:45,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 0 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 18:36:45,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2022-11-18 18:36:45,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1257. [2022-11-18 18:36:45,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 1210 states have (on average 3.4264462809917355) internal successors, (4146), 1256 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:45,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 4146 transitions. [2022-11-18 18:36:45,159 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 4146 transitions. Word has length 13 [2022-11-18 18:36:45,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:45,159 INFO L495 AbstractCegarLoop]: Abstraction has 1257 states and 4146 transitions. [2022-11-18 18:36:45,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:45,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 4146 transitions. [2022-11-18 18:36:45,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:45,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:45,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:45,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (111)] Ended with exit code 0 [2022-11-18 18:36:45,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:45,361 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:45,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:45,361 INFO L85 PathProgramCache]: Analyzing trace with hash 2043283638, now seen corresponding path program 1 times [2022-11-18 18:36:45,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:45,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118169684] [2022-11-18 18:36:45,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:45,361 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:45,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:45,362 INFO L229 MonitoredProcess]: Starting monitored process 112 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:45,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (112)] Waiting until timeout for monitored process [2022-11-18 18:36:45,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:45,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 18:36:45,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:45,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:36:45,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 18:36:46,050 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:36:46,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:36:46,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:36:46,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:36:46,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:36:52,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:36:52,216 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:52,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [118169684] [2022-11-18 18:36:52,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [118169684] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:36:52,216 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:36:52,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2022-11-18 18:36:52,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000345660] [2022-11-18 18:36:52,216 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:36:52,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:36:52,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:52,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:36:52,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:36:52,217 INFO L87 Difference]: Start difference. First operand 1257 states and 4146 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:52,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:52,738 INFO L93 Difference]: Finished difference Result 1569 states and 4951 transitions. [2022-11-18 18:36:52,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:36:52,739 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:52,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:52,742 INFO L225 Difference]: With dead ends: 1569 [2022-11-18 18:36:52,742 INFO L226 Difference]: Without dead ends: 1569 [2022-11-18 18:36:52,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:36:52,743 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 57 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 148 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:52,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 0 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 148 Unchecked, 0.5s Time] [2022-11-18 18:36:52,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2022-11-18 18:36:52,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1476. [2022-11-18 18:36:52,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1429 states have (on average 3.3547935619314204) internal successors, (4794), 1475 states have internal predecessors, (4794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:52,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 4794 transitions. [2022-11-18 18:36:52,766 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 4794 transitions. Word has length 13 [2022-11-18 18:36:52,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:52,766 INFO L495 AbstractCegarLoop]: Abstraction has 1476 states and 4794 transitions. [2022-11-18 18:36:52,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:52,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 4794 transitions. [2022-11-18 18:36:52,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:52,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:52,767 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:52,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (112)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:52,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:52,968 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:52,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:52,968 INFO L85 PathProgramCache]: Analyzing trace with hash 2043283673, now seen corresponding path program 1 times [2022-11-18 18:36:52,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:52,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834038316] [2022-11-18 18:36:52,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:52,968 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:52,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:52,969 INFO L229 MonitoredProcess]: Starting monitored process 113 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:52,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (113)] Waiting until timeout for monitored process [2022-11-18 18:36:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:53,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:36:53,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:53,586 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:36:53,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:36:53,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:53,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:36:53,755 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:36:53,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:36:54,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:36:54,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:54,050 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:54,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834038316] [2022-11-18 18:36:54,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1834038316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:54,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:54,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:36:54,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865673515] [2022-11-18 18:36:54,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:54,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:36:54,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:54,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:36:54,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:54,052 INFO L87 Difference]: Start difference. First operand 1476 states and 4794 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:54,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:54,427 INFO L93 Difference]: Finished difference Result 1482 states and 4807 transitions. [2022-11-18 18:36:54,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:36:54,428 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:54,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:54,431 INFO L225 Difference]: With dead ends: 1482 [2022-11-18 18:36:54,431 INFO L226 Difference]: Without dead ends: 1482 [2022-11-18 18:36:54,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:54,432 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:54,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 52 Unchecked, 0.4s Time] [2022-11-18 18:36:54,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2022-11-18 18:36:54,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1482. [2022-11-18 18:36:54,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1435 states have (on average 3.3498257839721255) internal successors, (4807), 1481 states have internal predecessors, (4807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:54,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 4807 transitions. [2022-11-18 18:36:54,454 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 4807 transitions. Word has length 13 [2022-11-18 18:36:54,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:54,455 INFO L495 AbstractCegarLoop]: Abstraction has 1482 states and 4807 transitions. [2022-11-18 18:36:54,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:54,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 4807 transitions. [2022-11-18 18:36:54,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:54,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:54,455 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:54,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (113)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:54,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:54,656 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:54,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:54,656 INFO L85 PathProgramCache]: Analyzing trace with hash 2103322954, now seen corresponding path program 1 times [2022-11-18 18:36:54,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:54,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [736834917] [2022-11-18 18:36:54,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:54,657 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:54,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:54,658 INFO L229 MonitoredProcess]: Starting monitored process 114 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:54,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (114)] Waiting until timeout for monitored process [2022-11-18 18:36:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:55,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:36:55,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:55,289 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:36:55,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:36:55,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:55,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:36:55,455 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:36:55,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:36:55,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:36:55,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:55,738 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:55,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [736834917] [2022-11-18 18:36:55,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [736834917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:55,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:55,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:36:55,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993628272] [2022-11-18 18:36:55,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:55,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:36:55,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:55,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:36:55,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:55,740 INFO L87 Difference]: Start difference. First operand 1482 states and 4807 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:56,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:56,096 INFO L93 Difference]: Finished difference Result 1492 states and 4842 transitions. [2022-11-18 18:36:56,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:36:56,097 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:56,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:56,101 INFO L225 Difference]: With dead ends: 1492 [2022-11-18 18:36:56,101 INFO L226 Difference]: Without dead ends: 1492 [2022-11-18 18:36:56,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:56,101 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:56,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 51 Unchecked, 0.3s Time] [2022-11-18 18:36:56,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2022-11-18 18:36:56,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1481. [2022-11-18 18:36:56,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1434 states have (on average 3.3493723849372383) internal successors, (4803), 1480 states have internal predecessors, (4803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:56,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 4803 transitions. [2022-11-18 18:36:56,123 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 4803 transitions. Word has length 13 [2022-11-18 18:36:56,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:56,123 INFO L495 AbstractCegarLoop]: Abstraction has 1481 states and 4803 transitions. [2022-11-18 18:36:56,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:56,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 4803 transitions. [2022-11-18 18:36:56,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:56,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:56,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:56,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (114)] Ended with exit code 0 [2022-11-18 18:36:56,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:56,325 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:56,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:56,325 INFO L85 PathProgramCache]: Analyzing trace with hash 2100194899, now seen corresponding path program 1 times [2022-11-18 18:36:56,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:56,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690528934] [2022-11-18 18:36:56,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:56,326 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:56,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:56,326 INFO L229 MonitoredProcess]: Starting monitored process 115 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:56,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (115)] Waiting until timeout for monitored process [2022-11-18 18:36:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:56,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:36:56,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:56,922 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:36:56,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:36:56,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:56,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:36:57,091 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:36:57,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:36:57,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:36:57,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:57,356 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:57,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690528934] [2022-11-18 18:36:57,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1690528934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:57,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:57,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:36:57,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417304130] [2022-11-18 18:36:57,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:57,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:36:57,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:57,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:36:57,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:57,357 INFO L87 Difference]: Start difference. First operand 1481 states and 4803 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:57,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:57,728 INFO L93 Difference]: Finished difference Result 1485 states and 4806 transitions. [2022-11-18 18:36:57,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:36:57,729 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:57,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:57,732 INFO L225 Difference]: With dead ends: 1485 [2022-11-18 18:36:57,732 INFO L226 Difference]: Without dead ends: 1481 [2022-11-18 18:36:57,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:36:57,732 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:57,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 117 Unchecked, 0.4s Time] [2022-11-18 18:36:57,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2022-11-18 18:36:57,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1481. [2022-11-18 18:36:57,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1434 states have (on average 3.3486750348675036) internal successors, (4802), 1480 states have internal predecessors, (4802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:57,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 4802 transitions. [2022-11-18 18:36:57,754 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 4802 transitions. Word has length 13 [2022-11-18 18:36:57,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:57,754 INFO L495 AbstractCegarLoop]: Abstraction has 1481 states and 4802 transitions. [2022-11-18 18:36:57,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:57,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 4802 transitions. [2022-11-18 18:36:57,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:57,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:57,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:57,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (115)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:57,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:57,955 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:57,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:57,955 INFO L85 PathProgramCache]: Analyzing trace with hash 2104236059, now seen corresponding path program 1 times [2022-11-18 18:36:57,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:57,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603264588] [2022-11-18 18:36:57,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:57,956 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:57,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:57,957 INFO L229 MonitoredProcess]: Starting monitored process 116 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:57,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (116)] Waiting until timeout for monitored process [2022-11-18 18:36:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:58,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:36:58,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:58,471 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-18 18:36:58,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2022-11-18 18:36:58,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:58,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:36:58,615 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:36:58,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:36:58,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:36:58,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:36:58,731 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:36:58,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603264588] [2022-11-18 18:36:58,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [603264588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:58,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:58,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:36:58,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676733216] [2022-11-18 18:36:58,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:58,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:36:58,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:58,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:36:58,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:36:58,733 INFO L87 Difference]: Start difference. First operand 1481 states and 4802 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:59,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:59,105 INFO L93 Difference]: Finished difference Result 1484 states and 4811 transitions. [2022-11-18 18:36:59,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:36:59,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:36:59,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:59,109 INFO L225 Difference]: With dead ends: 1484 [2022-11-18 18:36:59,109 INFO L226 Difference]: Without dead ends: 1484 [2022-11-18 18:36:59,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:36:59,110 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:59,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 46 Unchecked, 0.3s Time] [2022-11-18 18:36:59,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2022-11-18 18:36:59,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1484. [2022-11-18 18:36:59,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1484 states, 1437 states have (on average 3.34794711203897) internal successors, (4811), 1483 states have internal predecessors, (4811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:59,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 4811 transitions. [2022-11-18 18:36:59,132 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 4811 transitions. Word has length 13 [2022-11-18 18:36:59,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:59,132 INFO L495 AbstractCegarLoop]: Abstraction has 1484 states and 4811 transitions. [2022-11-18 18:36:59,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:59,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 4811 transitions. [2022-11-18 18:36:59,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:36:59,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:59,133 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:59,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (116)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:59,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:59,334 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:36:59,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:59,334 INFO L85 PathProgramCache]: Analyzing trace with hash 2104237361, now seen corresponding path program 1 times [2022-11-18 18:36:59,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:59,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267432348] [2022-11-18 18:36:59,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:59,334 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:59,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:59,335 INFO L229 MonitoredProcess]: Starting monitored process 117 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:59,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (117)] Waiting until timeout for monitored process [2022-11-18 18:36:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:59,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:36:59,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:59,962 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:36:59,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:37:00,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:00,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:37:00,158 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:37:00,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:37:00,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:37:00,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:00,422 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:00,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267432348] [2022-11-18 18:37:00,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267432348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:00,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:00,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:37:00,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804964932] [2022-11-18 18:37:00,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:00,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:37:00,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:00,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:37:00,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:00,424 INFO L87 Difference]: Start difference. First operand 1484 states and 4811 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:00,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:00,769 INFO L93 Difference]: Finished difference Result 1489 states and 4820 transitions. [2022-11-18 18:37:00,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:37:00,769 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:37:00,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:00,772 INFO L225 Difference]: With dead ends: 1489 [2022-11-18 18:37:00,773 INFO L226 Difference]: Without dead ends: 1489 [2022-11-18 18:37:00,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:00,773 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:00,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 0 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 80 Unchecked, 0.3s Time] [2022-11-18 18:37:00,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2022-11-18 18:37:00,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1484. [2022-11-18 18:37:00,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1484 states, 1437 states have (on average 3.34794711203897) internal successors, (4811), 1483 states have internal predecessors, (4811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:00,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 4811 transitions. [2022-11-18 18:37:00,795 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 4811 transitions. Word has length 13 [2022-11-18 18:37:00,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:00,796 INFO L495 AbstractCegarLoop]: Abstraction has 1484 states and 4811 transitions. [2022-11-18 18:37:00,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:00,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 4811 transitions. [2022-11-18 18:37:00,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:37:00,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:00,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:00,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (117)] Forceful destruction successful, exit code 0 [2022-11-18 18:37:00,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:00,997 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:00,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:00,997 INFO L85 PathProgramCache]: Analyzing trace with hash 2104346419, now seen corresponding path program 2 times [2022-11-18 18:37:00,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:00,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230892743] [2022-11-18 18:37:00,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:37:00,998 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:00,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:00,998 INFO L229 MonitoredProcess]: Starting monitored process 118 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:00,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (118)] Waiting until timeout for monitored process [2022-11-18 18:37:01,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:37:01,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:37:01,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:37:01,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:01,530 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:37:01,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:37:01,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:01,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:37:01,704 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:37:01,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:37:01,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:37:01,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:01,996 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:01,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230892743] [2022-11-18 18:37:01,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [230892743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:01,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:01,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:37:01,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587778848] [2022-11-18 18:37:01,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:01,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:37:01,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:01,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:37:01,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:01,998 INFO L87 Difference]: Start difference. First operand 1484 states and 4811 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:02,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:02,392 INFO L93 Difference]: Finished difference Result 1486 states and 4813 transitions. [2022-11-18 18:37:02,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:37:02,393 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:37:02,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:02,396 INFO L225 Difference]: With dead ends: 1486 [2022-11-18 18:37:02,396 INFO L226 Difference]: Without dead ends: 1486 [2022-11-18 18:37:02,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:02,396 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:02,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 51 Unchecked, 0.4s Time] [2022-11-18 18:37:02,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2022-11-18 18:37:02,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1484. [2022-11-18 18:37:02,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1484 states, 1437 states have (on average 3.34794711203897) internal successors, (4811), 1483 states have internal predecessors, (4811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:02,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 4811 transitions. [2022-11-18 18:37:02,417 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 4811 transitions. Word has length 13 [2022-11-18 18:37:02,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:02,417 INFO L495 AbstractCegarLoop]: Abstraction has 1484 states and 4811 transitions. [2022-11-18 18:37:02,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:02,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 4811 transitions. [2022-11-18 18:37:02,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:37:02,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:02,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:02,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (118)] Forceful destruction successful, exit code 0 [2022-11-18 18:37:02,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:02,619 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:02,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:02,619 INFO L85 PathProgramCache]: Analyzing trace with hash 2045849543, now seen corresponding path program 2 times [2022-11-18 18:37:02,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:02,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155086533] [2022-11-18 18:37:02,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:37:02,619 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:02,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:02,620 INFO L229 MonitoredProcess]: Starting monitored process 119 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:02,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (119)] Waiting until timeout for monitored process [2022-11-18 18:37:02,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:37:02,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:37:02,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:37:02,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:03,120 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:37:03,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:37:03,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:03,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:37:03,293 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:37:03,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:37:03,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:37:03,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:03,549 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:03,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155086533] [2022-11-18 18:37:03,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [155086533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:03,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:03,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:37:03,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037159239] [2022-11-18 18:37:03,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:03,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:37:03,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:03,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:37:03,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:03,550 INFO L87 Difference]: Start difference. First operand 1484 states and 4811 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:03,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:03,904 INFO L93 Difference]: Finished difference Result 1500 states and 4847 transitions. [2022-11-18 18:37:03,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:37:03,905 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:37:03,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:03,908 INFO L225 Difference]: With dead ends: 1500 [2022-11-18 18:37:03,908 INFO L226 Difference]: Without dead ends: 1500 [2022-11-18 18:37:03,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:03,909 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:03,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 0 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 87 Unchecked, 0.3s Time] [2022-11-18 18:37:03,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2022-11-18 18:37:03,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1481. [2022-11-18 18:37:03,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1434 states have (on average 3.3507670850767086) internal successors, (4805), 1480 states have internal predecessors, (4805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:03,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 4805 transitions. [2022-11-18 18:37:03,950 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 4805 transitions. Word has length 13 [2022-11-18 18:37:03,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:03,950 INFO L495 AbstractCegarLoop]: Abstraction has 1481 states and 4805 transitions. [2022-11-18 18:37:03,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:03,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 4805 transitions. [2022-11-18 18:37:03,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:37:03,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:03,951 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:03,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (119)] Forceful destruction successful, exit code 0 [2022-11-18 18:37:04,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:04,151 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:04,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:04,152 INFO L85 PathProgramCache]: Analyzing trace with hash 2045735153, now seen corresponding path program 3 times [2022-11-18 18:37:04,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:04,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531086760] [2022-11-18 18:37:04,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:37:04,152 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:04,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:04,153 INFO L229 MonitoredProcess]: Starting monitored process 120 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:04,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (120)] Waiting until timeout for monitored process [2022-11-18 18:37:04,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 18:37:04,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:37:04,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:37:04,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:04,662 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:37:04,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:37:04,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:04,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:37:04,832 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:37:04,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:37:05,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:37:05,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:05,098 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:05,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [531086760] [2022-11-18 18:37:05,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [531086760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:05,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:05,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:37:05,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663300488] [2022-11-18 18:37:05,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:05,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:37:05,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:05,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:37:05,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:05,100 INFO L87 Difference]: Start difference. First operand 1481 states and 4805 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:05,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:05,469 INFO L93 Difference]: Finished difference Result 1485 states and 4812 transitions. [2022-11-18 18:37:05,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:37:05,470 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:37:05,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:05,473 INFO L225 Difference]: With dead ends: 1485 [2022-11-18 18:37:05,474 INFO L226 Difference]: Without dead ends: 1485 [2022-11-18 18:37:05,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:05,474 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:05,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 48 Unchecked, 0.4s Time] [2022-11-18 18:37:05,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2022-11-18 18:37:05,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1479. [2022-11-18 18:37:05,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1432 states have (on average 3.3512569832402233) internal successors, (4799), 1478 states have internal predecessors, (4799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:05,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 4799 transitions. [2022-11-18 18:37:05,506 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 4799 transitions. Word has length 13 [2022-11-18 18:37:05,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:05,506 INFO L495 AbstractCegarLoop]: Abstraction has 1479 states and 4799 transitions. [2022-11-18 18:37:05,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:05,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 4799 transitions. [2022-11-18 18:37:05,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:37:05,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:05,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:05,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (120)] Forceful destruction successful, exit code 0 [2022-11-18 18:37:05,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:05,709 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:05,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:05,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1191566485, now seen corresponding path program 1 times [2022-11-18 18:37:05,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:05,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318433003] [2022-11-18 18:37:05,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:05,710 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:05,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:05,711 INFO L229 MonitoredProcess]: Starting monitored process 121 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:05,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (121)] Waiting until timeout for monitored process [2022-11-18 18:37:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:06,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:37:06,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:06,366 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:37:06,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:37:06,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:06,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:37:06,543 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:37:06,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:37:06,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 18:37:06,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:06,846 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:06,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318433003] [2022-11-18 18:37:06,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1318433003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:06,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:06,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:37:06,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084724849] [2022-11-18 18:37:06,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:06,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:37:06,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:06,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:37:06,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:06,848 INFO L87 Difference]: Start difference. First operand 1479 states and 4799 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:07,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:07,211 INFO L93 Difference]: Finished difference Result 1484 states and 4805 transitions. [2022-11-18 18:37:07,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:37:07,212 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:37:07,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:07,215 INFO L225 Difference]: With dead ends: 1484 [2022-11-18 18:37:07,215 INFO L226 Difference]: Without dead ends: 1484 [2022-11-18 18:37:07,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:07,215 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:07,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 82 Unchecked, 0.4s Time] [2022-11-18 18:37:07,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2022-11-18 18:37:07,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1482. [2022-11-18 18:37:07,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1435 states have (on average 3.3470383275261324) internal successors, (4803), 1481 states have internal predecessors, (4803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:07,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 4803 transitions. [2022-11-18 18:37:07,236 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 4803 transitions. Word has length 13 [2022-11-18 18:37:07,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:07,236 INFO L495 AbstractCegarLoop]: Abstraction has 1482 states and 4803 transitions. [2022-11-18 18:37:07,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:07,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 4803 transitions. [2022-11-18 18:37:07,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:37:07,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:07,237 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:07,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (121)] Forceful destruction successful, exit code 0 [2022-11-18 18:37:07,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:07,450 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:07,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:07,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1189600279, now seen corresponding path program 1 times [2022-11-18 18:37:07,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:07,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853458278] [2022-11-18 18:37:07,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:07,451 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:07,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:07,452 INFO L229 MonitoredProcess]: Starting monitored process 122 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:07,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (122)] Waiting until timeout for monitored process [2022-11-18 18:37:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:07,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 18:37:07,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:08,056 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-18 18:37:08,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2022-11-18 18:37:08,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:08,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:37:08,216 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:37:08,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:37:08,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 18:37:08,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:08,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:08,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853458278] [2022-11-18 18:37:08,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853458278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:08,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:08,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:37:08,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289615363] [2022-11-18 18:37:08,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:08,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:37:08,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:08,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:37:08,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:37:08,337 INFO L87 Difference]: Start difference. First operand 1482 states and 4803 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:08,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:08,690 INFO L93 Difference]: Finished difference Result 1485 states and 4816 transitions. [2022-11-18 18:37:08,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:37:08,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:37:08,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:08,694 INFO L225 Difference]: With dead ends: 1485 [2022-11-18 18:37:08,694 INFO L226 Difference]: Without dead ends: 1485 [2022-11-18 18:37:08,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:37:08,694 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:08,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 45 Unchecked, 0.3s Time] [2022-11-18 18:37:08,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2022-11-18 18:37:08,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1485. [2022-11-18 18:37:08,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1485 states, 1438 states have (on average 3.349095966620306) internal successors, (4816), 1484 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:08,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 4816 transitions. [2022-11-18 18:37:08,717 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 4816 transitions. Word has length 13 [2022-11-18 18:37:08,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:08,717 INFO L495 AbstractCegarLoop]: Abstraction has 1485 states and 4816 transitions. [2022-11-18 18:37:08,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:08,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 4816 transitions. [2022-11-18 18:37:08,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:37:08,718 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:08,718 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:08,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (122)] Forceful destruction successful, exit code 0 [2022-11-18 18:37:08,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:08,919 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:08,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:08,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1191249355, now seen corresponding path program 2 times [2022-11-18 18:37:08,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:08,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885372583] [2022-11-18 18:37:08,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:37:08,919 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:08,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:08,920 INFO L229 MonitoredProcess]: Starting monitored process 123 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:08,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (123)] Waiting until timeout for monitored process [2022-11-18 18:37:09,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:37:09,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:37:09,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:37:09,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:09,458 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:37:09,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:37:09,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:09,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:37:09,623 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:37:09,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:37:09,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 18:37:09,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:09,884 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:09,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885372583] [2022-11-18 18:37:09,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [885372583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:09,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:09,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:37:09,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279021177] [2022-11-18 18:37:09,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:09,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:37:09,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:09,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:37:09,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:09,886 INFO L87 Difference]: Start difference. First operand 1485 states and 4816 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:10,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:10,248 INFO L93 Difference]: Finished difference Result 1802 states and 5688 transitions. [2022-11-18 18:37:10,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:37:10,249 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:37:10,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:10,252 INFO L225 Difference]: With dead ends: 1802 [2022-11-18 18:37:10,252 INFO L226 Difference]: Without dead ends: 1798 [2022-11-18 18:37:10,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:10,253 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 43 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:10,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 0 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 88 Unchecked, 0.4s Time] [2022-11-18 18:37:10,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2022-11-18 18:37:10,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1485. [2022-11-18 18:37:10,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1485 states, 1438 states have (on average 3.3484005563282335) internal successors, (4815), 1484 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:10,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 4815 transitions. [2022-11-18 18:37:10,280 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 4815 transitions. Word has length 13 [2022-11-18 18:37:10,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:10,280 INFO L495 AbstractCegarLoop]: Abstraction has 1485 states and 4815 transitions. [2022-11-18 18:37:10,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:10,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 4815 transitions. [2022-11-18 18:37:10,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:37:10,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:10,281 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:10,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (123)] Forceful destruction successful, exit code 0 [2022-11-18 18:37:10,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 123 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:10,490 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:10,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:10,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1191483715, now seen corresponding path program 3 times [2022-11-18 18:37:10,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:10,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619939394] [2022-11-18 18:37:10,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:37:10,491 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:10,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:10,492 INFO L229 MonitoredProcess]: Starting monitored process 124 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:10,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (124)] Waiting until timeout for monitored process [2022-11-18 18:37:10,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 18:37:10,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:37:10,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:37:10,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:11,012 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:37:11,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:37:11,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:11,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:37:11,177 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:37:11,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:37:11,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 18:37:11,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:11,451 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:11,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619939394] [2022-11-18 18:37:11,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [619939394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:11,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:11,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:37:11,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675015754] [2022-11-18 18:37:11,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:11,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:37:11,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:11,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:37:11,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:11,453 INFO L87 Difference]: Start difference. First operand 1485 states and 4815 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:11,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:11,787 INFO L93 Difference]: Finished difference Result 1490 states and 4824 transitions. [2022-11-18 18:37:11,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:37:11,788 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:37:11,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:11,791 INFO L225 Difference]: With dead ends: 1490 [2022-11-18 18:37:11,791 INFO L226 Difference]: Without dead ends: 1490 [2022-11-18 18:37:11,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:11,792 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:11,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 76 Unchecked, 0.3s Time] [2022-11-18 18:37:11,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2022-11-18 18:37:11,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1485. [2022-11-18 18:37:11,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1485 states, 1438 states have (on average 3.3484005563282335) internal successors, (4815), 1484 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:11,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 4815 transitions. [2022-11-18 18:37:11,813 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 4815 transitions. Word has length 13 [2022-11-18 18:37:11,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:11,813 INFO L495 AbstractCegarLoop]: Abstraction has 1485 states and 4815 transitions. [2022-11-18 18:37:11,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:11,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 4815 transitions. [2022-11-18 18:37:11,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:37:11,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:11,814 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:11,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (124)] Forceful destruction successful, exit code 0 [2022-11-18 18:37:12,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:12,015 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:12,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:12,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1996386009, now seen corresponding path program 1 times [2022-11-18 18:37:12,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:12,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058671200] [2022-11-18 18:37:12,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:12,015 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:12,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:12,016 INFO L229 MonitoredProcess]: Starting monitored process 125 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:12,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (125)] Waiting until timeout for monitored process [2022-11-18 18:37:12,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:12,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:37:12,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:12,627 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:37:12,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:37:12,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:12,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:37:12,787 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:37:12,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:37:13,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:37:13,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:13,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:13,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058671200] [2022-11-18 18:37:13,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2058671200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:13,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:13,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:37:13,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814826113] [2022-11-18 18:37:13,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:13,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:37:13,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:13,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:37:13,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:13,067 INFO L87 Difference]: Start difference. First operand 1485 states and 4815 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:13,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:13,430 INFO L93 Difference]: Finished difference Result 1496 states and 4835 transitions. [2022-11-18 18:37:13,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:37:13,431 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:37:13,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:13,434 INFO L225 Difference]: With dead ends: 1496 [2022-11-18 18:37:13,435 INFO L226 Difference]: Without dead ends: 1492 [2022-11-18 18:37:13,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:13,435 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:13,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 0 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 50 Unchecked, 0.4s Time] [2022-11-18 18:37:13,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2022-11-18 18:37:13,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1491. [2022-11-18 18:37:13,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1491 states, 1444 states have (on average 3.342797783933518) internal successors, (4827), 1490 states have internal predecessors, (4827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:13,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 4827 transitions. [2022-11-18 18:37:13,467 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 4827 transitions. Word has length 14 [2022-11-18 18:37:13,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:13,467 INFO L495 AbstractCegarLoop]: Abstraction has 1491 states and 4827 transitions. [2022-11-18 18:37:13,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:13,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 4827 transitions. [2022-11-18 18:37:13,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:37:13,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:13,468 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:13,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (125)] Forceful destruction successful, exit code 0 [2022-11-18 18:37:13,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:13,669 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:13,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:13,669 INFO L85 PathProgramCache]: Analyzing trace with hash 2000428471, now seen corresponding path program 1 times [2022-11-18 18:37:13,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:13,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814045013] [2022-11-18 18:37:13,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:13,669 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:13,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:13,670 INFO L229 MonitoredProcess]: Starting monitored process 126 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:13,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (126)] Waiting until timeout for monitored process [2022-11-18 18:37:14,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:14,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 18:37:14,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:14,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:14,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2022-11-18 18:37:14,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:37:14,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:37:14,595 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5377 (Array (_ BitVec 32) (_ BitVec 8)))) (not (= (_ bv2 32) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5377) c_~q1~0.base)) (.cse1 (bvmul (_ bv4 32) c_~q1_back~0))) (concat (concat (concat (select .cse0 (bvadd .cse1 (_ bv3 32) c_~q1~0.offset)) (select .cse0 (bvadd .cse1 (_ bv2 32) c_~q1~0.offset))) (select .cse0 (bvadd .cse1 c_~q1~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~q1~0.offset))))))) is different from false [2022-11-18 18:37:14,641 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:37:14,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 137 treesize of output 67 [2022-11-18 18:37:14,653 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:37:14,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 30 [2022-11-18 18:37:14,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-18 18:37:14,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:14,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814045013] [2022-11-18 18:37:14,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814045013] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:37:14,805 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:37:14,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-18 18:37:14,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899376195] [2022-11-18 18:37:14,805 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:37:14,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:37:14,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:14,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:37:14,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=51, Unknown=1, NotChecked=14, Total=90 [2022-11-18 18:37:14,806 INFO L87 Difference]: Start difference. First operand 1491 states and 4827 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:15,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:15,429 INFO L93 Difference]: Finished difference Result 1496 states and 4835 transitions. [2022-11-18 18:37:15,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:37:15,430 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:37:15,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:15,434 INFO L225 Difference]: With dead ends: 1496 [2022-11-18 18:37:15,435 INFO L226 Difference]: Without dead ends: 1496 [2022-11-18 18:37:15,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=37, Invalid=76, Unknown=1, NotChecked=18, Total=132 [2022-11-18 18:37:15,435 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:15,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 110 Unchecked, 0.4s Time] [2022-11-18 18:37:15,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2022-11-18 18:37:15,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1493. [2022-11-18 18:37:15,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1493 states, 1446 states have (on average 3.340248962655602) internal successors, (4830), 1492 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:15,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 4830 transitions. [2022-11-18 18:37:15,466 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 4830 transitions. Word has length 14 [2022-11-18 18:37:15,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:15,466 INFO L495 AbstractCegarLoop]: Abstraction has 1493 states and 4830 transitions. [2022-11-18 18:37:15,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:15,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 4830 transitions. [2022-11-18 18:37:15,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:37:15,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:15,467 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:15,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (126)] Forceful destruction successful, exit code 0 [2022-11-18 18:37:15,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:15,680 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:15,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:15,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1951273321, now seen corresponding path program 2 times [2022-11-18 18:37:15,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:15,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655596522] [2022-11-18 18:37:15,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:37:15,681 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:15,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:15,682 INFO L229 MonitoredProcess]: Starting monitored process 127 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:15,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (127)] Waiting until timeout for monitored process [2022-11-18 18:37:16,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:37:16,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:37:16,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:37:16,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:16,205 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:37:16,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:37:16,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:16,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:37:16,374 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:37:16,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:37:16,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 18:37:16,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:16,707 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:16,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655596522] [2022-11-18 18:37:16,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655596522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:16,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:16,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:37:16,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392302661] [2022-11-18 18:37:16,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:16,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:37:16,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:16,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:37:16,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:16,709 INFO L87 Difference]: Start difference. First operand 1493 states and 4830 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:17,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:17,080 INFO L93 Difference]: Finished difference Result 1498 states and 4840 transitions. [2022-11-18 18:37:17,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:37:17,081 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:37:17,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:17,084 INFO L225 Difference]: With dead ends: 1498 [2022-11-18 18:37:17,084 INFO L226 Difference]: Without dead ends: 1498 [2022-11-18 18:37:17,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:17,084 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:17,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 47 Unchecked, 0.4s Time] [2022-11-18 18:37:17,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2022-11-18 18:37:17,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1493. [2022-11-18 18:37:17,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1493 states, 1446 states have (on average 3.340248962655602) internal successors, (4830), 1492 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:17,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 4830 transitions. [2022-11-18 18:37:17,106 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 4830 transitions. Word has length 14 [2022-11-18 18:37:17,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:17,106 INFO L495 AbstractCegarLoop]: Abstraction has 1493 states and 4830 transitions. [2022-11-18 18:37:17,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:17,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 4830 transitions. [2022-11-18 18:37:17,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:37:17,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:17,107 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:17,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (127)] Ended with exit code 0 [2022-11-18 18:37:17,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:17,308 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:17,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:17,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1951432351, now seen corresponding path program 3 times [2022-11-18 18:37:17,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:17,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [919061346] [2022-11-18 18:37:17,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:37:17,309 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:17,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:17,310 INFO L229 MonitoredProcess]: Starting monitored process 128 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:17,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (128)] Waiting until timeout for monitored process [2022-11-18 18:37:17,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 18:37:17,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:37:17,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:37:17,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:17,833 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:37:17,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:37:17,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:17,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:37:17,983 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:37:17,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:37:18,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 18:37:18,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:18,320 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:18,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [919061346] [2022-11-18 18:37:18,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [919061346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:18,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:18,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:37:18,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316524648] [2022-11-18 18:37:18,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:18,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:37:18,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:18,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:37:18,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:18,321 INFO L87 Difference]: Start difference. First operand 1493 states and 4830 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:18,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:18,667 INFO L93 Difference]: Finished difference Result 1498 states and 4839 transitions. [2022-11-18 18:37:18,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:37:18,668 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:37:18,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:18,671 INFO L225 Difference]: With dead ends: 1498 [2022-11-18 18:37:18,671 INFO L226 Difference]: Without dead ends: 1498 [2022-11-18 18:37:18,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:18,672 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:18,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 79 Unchecked, 0.3s Time] [2022-11-18 18:37:18,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2022-11-18 18:37:18,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1493. [2022-11-18 18:37:18,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1493 states, 1446 states have (on average 3.340248962655602) internal successors, (4830), 1492 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:18,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 4830 transitions. [2022-11-18 18:37:18,694 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 4830 transitions. Word has length 14 [2022-11-18 18:37:18,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:18,694 INFO L495 AbstractCegarLoop]: Abstraction has 1493 states and 4830 transitions. [2022-11-18 18:37:18,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:18,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 4830 transitions. [2022-11-18 18:37:18,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:37:18,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:18,695 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:18,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (128)] Forceful destruction successful, exit code 0 [2022-11-18 18:37:18,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:18,897 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:18,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:18,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1472539167, now seen corresponding path program 4 times [2022-11-18 18:37:18,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:18,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [348188889] [2022-11-18 18:37:18,898 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 18:37:18,898 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:18,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:18,899 INFO L229 MonitoredProcess]: Starting monitored process 129 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:18,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (129)] Waiting until timeout for monitored process [2022-11-18 18:37:19,311 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 18:37:19,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:37:19,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 18:37:19,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:19,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:19,460 INFO L321 Elim1Store]: treesize reduction 81, result has 22.1 percent of original size [2022-11-18 18:37:19,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 37 [2022-11-18 18:37:19,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:19,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:37:19,668 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:37:19,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:37:20,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:37:20,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:37:20,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:37:20,420 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:20,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [348188889] [2022-11-18 18:37:20,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [348188889] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 18:37:20,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:37:20,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2022-11-18 18:37:20,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146345148] [2022-11-18 18:37:20,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:20,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:37:20,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:20,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:37:20,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:37:20,422 INFO L87 Difference]: Start difference. First operand 1493 states and 4830 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:20,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:20,968 INFO L93 Difference]: Finished difference Result 1482 states and 4758 transitions. [2022-11-18 18:37:20,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:37:20,969 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:37:20,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:20,986 INFO L225 Difference]: With dead ends: 1482 [2022-11-18 18:37:20,986 INFO L226 Difference]: Without dead ends: 1364 [2022-11-18 18:37:20,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:37:20,988 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 57 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:20,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 0 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 80 Invalid, 0 Unknown, 80 Unchecked, 0.5s Time] [2022-11-18 18:37:20,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2022-11-18 18:37:21,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1335. [2022-11-18 18:37:21,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1335 states, 1294 states have (on average 3.445904173106646) internal successors, (4459), 1334 states have internal predecessors, (4459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:21,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 4459 transitions. [2022-11-18 18:37:21,012 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 4459 transitions. Word has length 14 [2022-11-18 18:37:21,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:21,013 INFO L495 AbstractCegarLoop]: Abstraction has 1335 states and 4459 transitions. [2022-11-18 18:37:21,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:21,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 4459 transitions. [2022-11-18 18:37:21,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:37:21,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:21,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:21,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (129)] Forceful destruction successful, exit code 0 [2022-11-18 18:37:21,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:21,215 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:21,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:21,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1082720492, now seen corresponding path program 1 times [2022-11-18 18:37:21,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:21,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [585082321] [2022-11-18 18:37:21,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:21,216 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:21,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:21,217 INFO L229 MonitoredProcess]: Starting monitored process 130 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:21,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (130)] Waiting until timeout for monitored process [2022-11-18 18:37:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:21,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:37:21,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:21,905 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:37:21,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:37:21,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:21,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:37:22,106 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:37:22,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:37:22,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:37:22,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:22,434 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:22,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [585082321] [2022-11-18 18:37:22,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [585082321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:22,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:22,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:37:22,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315310901] [2022-11-18 18:37:22,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:22,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:37:22,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:22,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:37:22,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:22,436 INFO L87 Difference]: Start difference. First operand 1335 states and 4459 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:22,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:22,750 INFO L93 Difference]: Finished difference Result 1341 states and 4475 transitions. [2022-11-18 18:37:22,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:37:22,751 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:37:22,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:22,754 INFO L225 Difference]: With dead ends: 1341 [2022-11-18 18:37:22,754 INFO L226 Difference]: Without dead ends: 1341 [2022-11-18 18:37:22,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:22,755 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:22,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 49 Unchecked, 0.3s Time] [2022-11-18 18:37:22,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2022-11-18 18:37:22,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1341. [2022-11-18 18:37:22,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1341 states, 1300 states have (on average 3.4423076923076925) internal successors, (4475), 1340 states have internal predecessors, (4475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:22,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 4475 transitions. [2022-11-18 18:37:22,775 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 4475 transitions. Word has length 14 [2022-11-18 18:37:22,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:22,775 INFO L495 AbstractCegarLoop]: Abstraction has 1341 states and 4475 transitions. [2022-11-18 18:37:22,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:22,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 4475 transitions. [2022-11-18 18:37:22,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:37:22,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:22,776 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:22,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (130)] Ended with exit code 0 [2022-11-18 18:37:22,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:22,977 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:22,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:22,977 INFO L85 PathProgramCache]: Analyzing trace with hash 780386700, now seen corresponding path program 2 times [2022-11-18 18:37:22,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:22,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1838428387] [2022-11-18 18:37:22,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:37:22,978 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:22,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:22,978 INFO L229 MonitoredProcess]: Starting monitored process 131 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:22,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (131)] Waiting until timeout for monitored process [2022-11-18 18:37:23,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:37:23,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:37:23,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:37:23,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:23,449 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-18 18:37:23,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2022-11-18 18:37:23,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:23,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:37:23,586 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:37:23,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:37:23,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 18:37:23,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:23,717 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:23,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1838428387] [2022-11-18 18:37:23,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1838428387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:23,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:23,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:37:23,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997873878] [2022-11-18 18:37:23,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:23,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:37:23,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:23,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:37:23,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:37:23,718 INFO L87 Difference]: Start difference. First operand 1341 states and 4475 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:24,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:24,057 INFO L93 Difference]: Finished difference Result 1341 states and 4473 transitions. [2022-11-18 18:37:24,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:37:24,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:37:24,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:24,061 INFO L225 Difference]: With dead ends: 1341 [2022-11-18 18:37:24,061 INFO L226 Difference]: Without dead ends: 1341 [2022-11-18 18:37:24,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:37:24,061 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:24,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 43 Unchecked, 0.3s Time] [2022-11-18 18:37:24,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2022-11-18 18:37:24,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1341. [2022-11-18 18:37:24,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1341 states, 1300 states have (on average 3.440769230769231) internal successors, (4473), 1340 states have internal predecessors, (4473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:24,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 4473 transitions. [2022-11-18 18:37:24,081 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 4473 transitions. Word has length 14 [2022-11-18 18:37:24,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:24,081 INFO L495 AbstractCegarLoop]: Abstraction has 1341 states and 4473 transitions. [2022-11-18 18:37:24,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:24,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 4473 transitions. [2022-11-18 18:37:24,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:37:24,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:24,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:24,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (131)] Ended with exit code 0 [2022-11-18 18:37:24,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:24,283 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:24,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:24,283 INFO L85 PathProgramCache]: Analyzing trace with hash 778499451, now seen corresponding path program 1 times [2022-11-18 18:37:24,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:24,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896969435] [2022-11-18 18:37:24,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:24,283 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:24,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:24,284 INFO L229 MonitoredProcess]: Starting monitored process 132 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:24,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (132)] Waiting until timeout for monitored process [2022-11-18 18:37:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:24,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:37:24,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:24,944 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:37:24,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:37:25,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:25,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:37:25,121 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:37:25,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:37:25,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:37:25,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:25,395 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:25,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896969435] [2022-11-18 18:37:25,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896969435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:25,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:25,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:37:25,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661374505] [2022-11-18 18:37:25,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:25,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:37:25,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:25,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:37:25,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:25,396 INFO L87 Difference]: Start difference. First operand 1341 states and 4473 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:25,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:25,737 INFO L93 Difference]: Finished difference Result 1351 states and 4509 transitions. [2022-11-18 18:37:25,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:37:25,738 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:37:25,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:25,741 INFO L225 Difference]: With dead ends: 1351 [2022-11-18 18:37:25,741 INFO L226 Difference]: Without dead ends: 1351 [2022-11-18 18:37:25,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:25,741 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:25,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 49 Unchecked, 0.3s Time] [2022-11-18 18:37:25,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2022-11-18 18:37:25,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1343. [2022-11-18 18:37:25,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 1302 states have (on average 3.4416282642089095) internal successors, (4481), 1342 states have internal predecessors, (4481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:25,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 4481 transitions. [2022-11-18 18:37:25,763 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 4481 transitions. Word has length 14 [2022-11-18 18:37:25,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:25,763 INFO L495 AbstractCegarLoop]: Abstraction has 1343 states and 4481 transitions. [2022-11-18 18:37:25,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:25,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 4481 transitions. [2022-11-18 18:37:25,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:37:25,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:25,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:25,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (132)] Forceful destruction successful, exit code 0 [2022-11-18 18:37:25,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:25,964 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:25,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:25,965 INFO L85 PathProgramCache]: Analyzing trace with hash 806897001, now seen corresponding path program 2 times [2022-11-18 18:37:25,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:25,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374635771] [2022-11-18 18:37:25,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:37:25,965 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:25,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:25,966 INFO L229 MonitoredProcess]: Starting monitored process 133 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:25,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (133)] Waiting until timeout for monitored process [2022-11-18 18:37:26,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:37:26,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:37:26,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:37:26,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:26,501 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:37:26,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:37:26,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:26,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:37:26,665 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:37:26,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:37:26,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:37:26,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:26,935 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:26,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374635771] [2022-11-18 18:37:26,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374635771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:26,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:26,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:37:26,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647378243] [2022-11-18 18:37:26,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:26,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:37:26,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:26,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:37:26,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:26,936 INFO L87 Difference]: Start difference. First operand 1343 states and 4481 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:27,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:27,244 INFO L93 Difference]: Finished difference Result 1349 states and 4501 transitions. [2022-11-18 18:37:27,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:37:27,244 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:37:27,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:27,247 INFO L225 Difference]: With dead ends: 1349 [2022-11-18 18:37:27,248 INFO L226 Difference]: Without dead ends: 1349 [2022-11-18 18:37:27,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:27,248 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:27,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 46 Unchecked, 0.3s Time] [2022-11-18 18:37:27,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2022-11-18 18:37:27,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1341. [2022-11-18 18:37:27,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1341 states, 1300 states have (on average 3.440769230769231) internal successors, (4473), 1340 states have internal predecessors, (4473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:27,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 4473 transitions. [2022-11-18 18:37:27,268 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 4473 transitions. Word has length 14 [2022-11-18 18:37:27,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:27,268 INFO L495 AbstractCegarLoop]: Abstraction has 1341 states and 4473 transitions. [2022-11-18 18:37:27,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:27,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 4473 transitions. [2022-11-18 18:37:27,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:37:27,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:27,269 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:27,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (133)] Ended with exit code 0 [2022-11-18 18:37:27,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:27,474 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:27,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:27,474 INFO L85 PathProgramCache]: Analyzing trace with hash 806808651, now seen corresponding path program 3 times [2022-11-18 18:37:27,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:27,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17282016] [2022-11-18 18:37:27,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:37:27,475 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:27,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:27,476 INFO L229 MonitoredProcess]: Starting monitored process 134 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:27,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (134)] Waiting until timeout for monitored process [2022-11-18 18:37:27,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 18:37:27,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:37:27,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:37:27,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:28,009 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:37:28,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:37:28,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:28,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:37:28,174 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:37:28,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:37:28,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:37:28,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:28,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:28,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17282016] [2022-11-18 18:37:28,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17282016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:28,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:28,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:37:28,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036347870] [2022-11-18 18:37:28,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:28,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:37:28,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:28,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:37:28,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:28,472 INFO L87 Difference]: Start difference. First operand 1341 states and 4473 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:28,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:28,790 INFO L93 Difference]: Finished difference Result 1346 states and 4488 transitions. [2022-11-18 18:37:28,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:37:28,790 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:37:28,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:28,794 INFO L225 Difference]: With dead ends: 1346 [2022-11-18 18:37:28,794 INFO L226 Difference]: Without dead ends: 1346 [2022-11-18 18:37:28,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:28,794 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:28,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 45 Unchecked, 0.3s Time] [2022-11-18 18:37:28,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2022-11-18 18:37:28,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1338. [2022-11-18 18:37:28,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 1297 states have (on average 3.441017733230532) internal successors, (4463), 1337 states have internal predecessors, (4463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:28,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 4463 transitions. [2022-11-18 18:37:28,814 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 4463 transitions. Word has length 14 [2022-11-18 18:37:28,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:28,814 INFO L495 AbstractCegarLoop]: Abstraction has 1338 states and 4463 transitions. [2022-11-18 18:37:28,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:28,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 4463 transitions. [2022-11-18 18:37:28,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:37:28,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:28,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:28,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (134)] Ended with exit code 0 [2022-11-18 18:37:29,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:29,015 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:29,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:29,015 INFO L85 PathProgramCache]: Analyzing trace with hash 806805396, now seen corresponding path program 1 times [2022-11-18 18:37:29,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:29,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660923121] [2022-11-18 18:37:29,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:29,016 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:29,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:29,017 INFO L229 MonitoredProcess]: Starting monitored process 135 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:29,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (135)] Waiting until timeout for monitored process [2022-11-18 18:37:29,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:29,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:37:29,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:29,668 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:37:29,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:37:29,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:29,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:37:29,829 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:37:29,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:37:30,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:37:30,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:30,118 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:30,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660923121] [2022-11-18 18:37:30,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660923121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:30,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:30,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:37:30,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703389908] [2022-11-18 18:37:30,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:30,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:37:30,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:30,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:37:30,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:30,119 INFO L87 Difference]: Start difference. First operand 1338 states and 4463 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:30,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:30,447 INFO L93 Difference]: Finished difference Result 1342 states and 4465 transitions. [2022-11-18 18:37:30,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:37:30,447 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:37:30,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:30,450 INFO L225 Difference]: With dead ends: 1342 [2022-11-18 18:37:30,451 INFO L226 Difference]: Without dead ends: 1341 [2022-11-18 18:37:30,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:30,451 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:30,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 47 Unchecked, 0.3s Time] [2022-11-18 18:37:30,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2022-11-18 18:37:30,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1338. [2022-11-18 18:37:30,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 1297 states have (on average 3.4402467232074017) internal successors, (4462), 1337 states have internal predecessors, (4462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:30,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 4462 transitions. [2022-11-18 18:37:30,472 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 4462 transitions. Word has length 14 [2022-11-18 18:37:30,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:30,472 INFO L495 AbstractCegarLoop]: Abstraction has 1338 states and 4462 transitions. [2022-11-18 18:37:30,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:30,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 4462 transitions. [2022-11-18 18:37:30,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:37:30,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:30,473 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:30,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (135)] Ended with exit code 0 [2022-11-18 18:37:30,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:30,673 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:30,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:30,673 INFO L85 PathProgramCache]: Analyzing trace with hash 806807008, now seen corresponding path program 1 times [2022-11-18 18:37:30,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:30,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790814555] [2022-11-18 18:37:30,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:30,674 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:30,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:30,675 INFO L229 MonitoredProcess]: Starting monitored process 136 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:30,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (136)] Waiting until timeout for monitored process [2022-11-18 18:37:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:31,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:37:31,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:31,347 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:37:31,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:37:31,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:31,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:37:31,513 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:37:31,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:37:31,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:37:31,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:31,795 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:31,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790814555] [2022-11-18 18:37:31,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790814555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:31,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:31,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:37:31,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654572497] [2022-11-18 18:37:31,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:31,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:37:31,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:31,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:37:31,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:31,797 INFO L87 Difference]: Start difference. First operand 1338 states and 4462 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:32,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:32,113 INFO L93 Difference]: Finished difference Result 1342 states and 4471 transitions. [2022-11-18 18:37:32,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:37:32,113 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:37:32,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:32,116 INFO L225 Difference]: With dead ends: 1342 [2022-11-18 18:37:32,116 INFO L226 Difference]: Without dead ends: 1342 [2022-11-18 18:37:32,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:32,117 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:32,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 73 Unchecked, 0.3s Time] [2022-11-18 18:37:32,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2022-11-18 18:37:32,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1339. [2022-11-18 18:37:32,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 1298 states have (on average 3.4391371340523884) internal successors, (4464), 1338 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:32,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 4464 transitions. [2022-11-18 18:37:32,137 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 4464 transitions. Word has length 14 [2022-11-18 18:37:32,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:32,137 INFO L495 AbstractCegarLoop]: Abstraction has 1339 states and 4464 transitions. [2022-11-18 18:37:32,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:32,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 4464 transitions. [2022-11-18 18:37:32,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:37:32,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:32,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:32,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (136)] Ended with exit code 0 [2022-11-18 18:37:32,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:32,339 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:32,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:32,339 INFO L85 PathProgramCache]: Analyzing trace with hash 806796096, now seen corresponding path program 2 times [2022-11-18 18:37:32,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:32,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [888645007] [2022-11-18 18:37:32,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:37:32,339 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:32,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:32,340 INFO L229 MonitoredProcess]: Starting monitored process 137 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:32,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (137)] Waiting until timeout for monitored process [2022-11-18 18:37:32,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:37:32,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:37:32,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 18:37:32,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:32,885 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:37:32,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:37:32,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:32,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:37:33,048 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:37:33,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:37:33,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:37:33,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:33,342 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:33,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [888645007] [2022-11-18 18:37:33,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [888645007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:33,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:33,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:37:33,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566990043] [2022-11-18 18:37:33,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:33,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:37:33,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:33,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:37:33,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:33,343 INFO L87 Difference]: Start difference. First operand 1339 states and 4464 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:33,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:33,652 INFO L93 Difference]: Finished difference Result 1341 states and 4465 transitions. [2022-11-18 18:37:33,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:37:33,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:37:33,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:33,655 INFO L225 Difference]: With dead ends: 1341 [2022-11-18 18:37:33,655 INFO L226 Difference]: Without dead ends: 1339 [2022-11-18 18:37:33,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:33,656 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:33,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 44 Unchecked, 0.3s Time] [2022-11-18 18:37:33,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2022-11-18 18:37:33,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1339. [2022-11-18 18:37:33,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 1298 states have (on average 3.438366718027735) internal successors, (4463), 1338 states have internal predecessors, (4463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:33,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 4463 transitions. [2022-11-18 18:37:33,675 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 4463 transitions. Word has length 14 [2022-11-18 18:37:33,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:33,675 INFO L495 AbstractCegarLoop]: Abstraction has 1339 states and 4463 transitions. [2022-11-18 18:37:33,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:33,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 4463 transitions. [2022-11-18 18:37:33,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:37:33,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:33,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:33,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (137)] Ended with exit code 0 [2022-11-18 18:37:33,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:33,876 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:33,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:33,876 INFO L85 PathProgramCache]: Analyzing trace with hash 806846068, now seen corresponding path program 2 times [2022-11-18 18:37:33,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:33,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005435279] [2022-11-18 18:37:33,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:37:33,877 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:33,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:33,878 INFO L229 MonitoredProcess]: Starting monitored process 138 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:33,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (138)] Waiting until timeout for monitored process [2022-11-18 18:37:34,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:37:34,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:37:34,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:37:34,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:34,414 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:37:34,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:37:34,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:34,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:37:34,577 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:37:34,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:37:34,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:37:34,865 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:34,865 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:34,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005435279] [2022-11-18 18:37:34,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005435279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:34,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:34,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:37:34,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537990082] [2022-11-18 18:37:34,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:34,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:37:34,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:34,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:37:34,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:34,866 INFO L87 Difference]: Start difference. First operand 1339 states and 4463 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:35,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:35,153 INFO L93 Difference]: Finished difference Result 1341 states and 4468 transitions. [2022-11-18 18:37:35,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:37:35,154 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:37:35,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:35,157 INFO L225 Difference]: With dead ends: 1341 [2022-11-18 18:37:35,157 INFO L226 Difference]: Without dead ends: 1341 [2022-11-18 18:37:35,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:35,157 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:35,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 44 Unchecked, 0.3s Time] [2022-11-18 18:37:35,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2022-11-18 18:37:35,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1340. [2022-11-18 18:37:35,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 1299 states have (on average 3.4380292532717474) internal successors, (4466), 1339 states have internal predecessors, (4466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:35,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 4466 transitions. [2022-11-18 18:37:35,176 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 4466 transitions. Word has length 14 [2022-11-18 18:37:35,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:35,176 INFO L495 AbstractCegarLoop]: Abstraction has 1340 states and 4466 transitions. [2022-11-18 18:37:35,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:35,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 4466 transitions. [2022-11-18 18:37:35,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:37:35,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:35,177 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:35,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (138)] Forceful destruction successful, exit code 0 [2022-11-18 18:37:35,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:35,377 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:35,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:35,378 INFO L85 PathProgramCache]: Analyzing trace with hash 806840736, now seen corresponding path program 1 times [2022-11-18 18:37:35,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:35,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398850366] [2022-11-18 18:37:35,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:35,378 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:35,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:35,379 INFO L229 MonitoredProcess]: Starting monitored process 139 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:35,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (139)] Waiting until timeout for monitored process [2022-11-18 18:37:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:35,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:37:35,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:36,042 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:37:36,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:37:36,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:36,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:37:36,210 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:37:36,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:37:36,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:37:36,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:36,492 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:36,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398850366] [2022-11-18 18:37:36,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398850366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:36,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:36,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:37:36,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903496105] [2022-11-18 18:37:36,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:36,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:37:36,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:36,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:37:36,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:36,493 INFO L87 Difference]: Start difference. First operand 1340 states and 4466 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:36,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:36,805 INFO L93 Difference]: Finished difference Result 1351 states and 4510 transitions. [2022-11-18 18:37:36,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:37:36,805 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:37:36,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:36,808 INFO L225 Difference]: With dead ends: 1351 [2022-11-18 18:37:36,809 INFO L226 Difference]: Without dead ends: 1351 [2022-11-18 18:37:36,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:36,809 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:36,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 46 Unchecked, 0.3s Time] [2022-11-18 18:37:36,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2022-11-18 18:37:36,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1341. [2022-11-18 18:37:36,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1341 states, 1300 states have (on average 3.439230769230769) internal successors, (4471), 1340 states have internal predecessors, (4471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:36,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 4471 transitions. [2022-11-18 18:37:36,829 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 4471 transitions. Word has length 14 [2022-11-18 18:37:36,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:36,829 INFO L495 AbstractCegarLoop]: Abstraction has 1341 states and 4471 transitions. [2022-11-18 18:37:36,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:36,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 4471 transitions. [2022-11-18 18:37:36,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:37:36,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:36,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:36,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (139)] Ended with exit code 0 [2022-11-18 18:37:37,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:37,030 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:37,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:37,030 INFO L85 PathProgramCache]: Analyzing trace with hash 810226866, now seen corresponding path program 3 times [2022-11-18 18:37:37,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:37,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [430518081] [2022-11-18 18:37:37,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:37:37,031 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:37,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:37,032 INFO L229 MonitoredProcess]: Starting monitored process 140 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:37,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (140)] Waiting until timeout for monitored process [2022-11-18 18:37:37,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 18:37:37,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:37:37,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:37:37,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:37,612 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:37:37,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:37:37,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:37,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:37:37,775 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:37:37,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:37:38,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:37:38,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:38,050 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:38,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [430518081] [2022-11-18 18:37:38,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [430518081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:38,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:38,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:37:38,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062072769] [2022-11-18 18:37:38,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:38,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:37:38,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:38,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:37:38,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:38,051 INFO L87 Difference]: Start difference. First operand 1341 states and 4471 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:38,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:38,392 INFO L93 Difference]: Finished difference Result 1342 states and 4471 transitions. [2022-11-18 18:37:38,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:37:38,393 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:37:38,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:38,396 INFO L225 Difference]: With dead ends: 1342 [2022-11-18 18:37:38,396 INFO L226 Difference]: Without dead ends: 1339 [2022-11-18 18:37:38,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:38,397 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:38,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 74 Unchecked, 0.3s Time] [2022-11-18 18:37:38,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2022-11-18 18:37:38,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1339. [2022-11-18 18:37:38,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 1298 states have (on average 3.4422187981510017) internal successors, (4468), 1338 states have internal predecessors, (4468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:38,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 4468 transitions. [2022-11-18 18:37:38,418 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 4468 transitions. Word has length 14 [2022-11-18 18:37:38,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:38,418 INFO L495 AbstractCegarLoop]: Abstraction has 1339 states and 4468 transitions. [2022-11-18 18:37:38,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:38,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 4468 transitions. [2022-11-18 18:37:38,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:37:38,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:38,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:38,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (140)] Ended with exit code 0 [2022-11-18 18:37:38,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:38,620 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:38,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:38,620 INFO L85 PathProgramCache]: Analyzing trace with hash 811775998, now seen corresponding path program 3 times [2022-11-18 18:37:38,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:38,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767417556] [2022-11-18 18:37:38,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:37:38,621 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:38,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:38,622 INFO L229 MonitoredProcess]: Starting monitored process 141 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:38,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (141)] Waiting until timeout for monitored process [2022-11-18 18:37:39,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 18:37:39,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:37:39,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:37:39,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:39,188 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:37:39,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:37:39,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:39,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:37:39,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:39,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:37:39,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:37:39,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:39,649 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:39,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767417556] [2022-11-18 18:37:39,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767417556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:39,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:39,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:37:39,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948280385] [2022-11-18 18:37:39,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:39,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:37:39,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:39,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:37:39,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:39,650 INFO L87 Difference]: Start difference. First operand 1339 states and 4468 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:40,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:40,180 INFO L93 Difference]: Finished difference Result 1340 states and 4470 transitions. [2022-11-18 18:37:40,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:37:40,181 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:37:40,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:40,184 INFO L225 Difference]: With dead ends: 1340 [2022-11-18 18:37:40,184 INFO L226 Difference]: Without dead ends: 1340 [2022-11-18 18:37:40,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:37:40,184 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:40,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 89 Invalid, 0 Unknown, 78 Unchecked, 0.4s Time] [2022-11-18 18:37:40,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2022-11-18 18:37:40,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 1338. [2022-11-18 18:37:40,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 1297 states have (on average 3.4425597532767926) internal successors, (4465), 1337 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:40,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 4465 transitions. [2022-11-18 18:37:40,204 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 4465 transitions. Word has length 14 [2022-11-18 18:37:40,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:40,204 INFO L495 AbstractCegarLoop]: Abstraction has 1338 states and 4465 transitions. [2022-11-18 18:37:40,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:40,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 4465 transitions. [2022-11-18 18:37:40,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:37:40,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:40,205 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:40,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (141)] Forceful destruction successful, exit code 0 [2022-11-18 18:37:40,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:40,406 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:40,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:40,406 INFO L85 PathProgramCache]: Analyzing trace with hash 720685536, now seen corresponding path program 2 times [2022-11-18 18:37:40,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:40,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [977641882] [2022-11-18 18:37:40,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:37:40,406 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:40,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:40,407 INFO L229 MonitoredProcess]: Starting monitored process 142 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:40,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (142)] Waiting until timeout for monitored process [2022-11-18 18:37:40,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:37:40,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:37:40,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:37:40,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:40,971 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:37:40,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:37:41,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:41,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:37:41,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:41,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:37:41,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:37:41,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:41,449 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:41,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [977641882] [2022-11-18 18:37:41,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [977641882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:41,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:41,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:37:41,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428682234] [2022-11-18 18:37:41,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:41,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:37:41,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:41,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:37:41,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:41,450 INFO L87 Difference]: Start difference. First operand 1338 states and 4465 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:42,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:42,007 INFO L93 Difference]: Finished difference Result 1350 states and 4508 transitions. [2022-11-18 18:37:42,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:37:42,008 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:37:42,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:42,011 INFO L225 Difference]: With dead ends: 1350 [2022-11-18 18:37:42,011 INFO L226 Difference]: Without dead ends: 1350 [2022-11-18 18:37:42,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:37:42,011 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:42,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 49 Unchecked, 0.4s Time] [2022-11-18 18:37:42,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2022-11-18 18:37:42,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 1339. [2022-11-18 18:37:42,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 1298 states have (on average 3.440677966101695) internal successors, (4466), 1338 states have internal predecessors, (4466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:42,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 4466 transitions. [2022-11-18 18:37:42,030 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 4466 transitions. Word has length 14 [2022-11-18 18:37:42,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:42,030 INFO L495 AbstractCegarLoop]: Abstraction has 1339 states and 4466 transitions. [2022-11-18 18:37:42,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:42,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 4466 transitions. [2022-11-18 18:37:42,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:37:42,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:42,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:42,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (142)] Ended with exit code 0 [2022-11-18 18:37:42,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:42,231 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:42,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:42,232 INFO L85 PathProgramCache]: Analyzing trace with hash 729552838, now seen corresponding path program 4 times [2022-11-18 18:37:42,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:42,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878207781] [2022-11-18 18:37:42,232 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 18:37:42,232 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:42,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:42,234 INFO L229 MonitoredProcess]: Starting monitored process 143 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:42,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (143)] Waiting until timeout for monitored process [2022-11-18 18:37:42,705 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 18:37:42,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:37:42,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:37:42,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:42,846 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:37:42,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:37:42,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:42,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:37:43,020 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:37:43,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:37:43,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:37:43,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:43,276 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:43,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878207781] [2022-11-18 18:37:43,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878207781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:43,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:43,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:37:43,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217977204] [2022-11-18 18:37:43,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:43,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:37:43,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:43,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:37:43,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:43,278 INFO L87 Difference]: Start difference. First operand 1339 states and 4466 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:43,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:43,628 INFO L93 Difference]: Finished difference Result 1340 states and 4468 transitions. [2022-11-18 18:37:43,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:37:43,629 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:37:43,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:43,632 INFO L225 Difference]: With dead ends: 1340 [2022-11-18 18:37:43,632 INFO L226 Difference]: Without dead ends: 1340 [2022-11-18 18:37:43,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:43,632 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:43,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 47 Unchecked, 0.3s Time] [2022-11-18 18:37:43,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2022-11-18 18:37:43,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 1338. [2022-11-18 18:37:43,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 1297 states have (on average 3.441017733230532) internal successors, (4463), 1337 states have internal predecessors, (4463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:43,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 4463 transitions. [2022-11-18 18:37:43,653 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 4463 transitions. Word has length 14 [2022-11-18 18:37:43,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:43,654 INFO L495 AbstractCegarLoop]: Abstraction has 1338 states and 4463 transitions. [2022-11-18 18:37:43,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:43,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 4463 transitions. [2022-11-18 18:37:43,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:37:43,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:43,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:43,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (143)] Ended with exit code 0 [2022-11-18 18:37:43,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:43,855 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:43,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:43,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1006724612, now seen corresponding path program 2 times [2022-11-18 18:37:43,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:43,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922683569] [2022-11-18 18:37:43,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:37:43,856 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:43,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:43,856 INFO L229 MonitoredProcess]: Starting monitored process 144 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:43,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (144)] Waiting until timeout for monitored process [2022-11-18 18:37:44,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:37:44,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:37:44,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:37:44,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:44,433 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:37:44,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:37:44,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:44,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:37:44,604 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:37:44,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:37:44,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:37:44,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:44,925 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:44,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922683569] [2022-11-18 18:37:44,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922683569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:44,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:44,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:37:44,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549182475] [2022-11-18 18:37:44,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:44,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:37:44,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:44,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:37:44,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:44,928 INFO L87 Difference]: Start difference. First operand 1338 states and 4463 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:45,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:45,254 INFO L93 Difference]: Finished difference Result 1345 states and 4476 transitions. [2022-11-18 18:37:45,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:37:45,255 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:37:45,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:45,258 INFO L225 Difference]: With dead ends: 1345 [2022-11-18 18:37:45,258 INFO L226 Difference]: Without dead ends: 1345 [2022-11-18 18:37:45,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:45,259 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:45,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 47 Unchecked, 0.3s Time] [2022-11-18 18:37:45,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2022-11-18 18:37:45,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1333. [2022-11-18 18:37:45,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 1292 states have (on average 3.442724458204334) internal successors, (4448), 1332 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:45,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 4448 transitions. [2022-11-18 18:37:45,287 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 4448 transitions. Word has length 14 [2022-11-18 18:37:45,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:45,287 INFO L495 AbstractCegarLoop]: Abstraction has 1333 states and 4448 transitions. [2022-11-18 18:37:45,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:45,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 4448 transitions. [2022-11-18 18:37:45,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:37:45,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:45,288 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:45,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (144)] Ended with exit code 0 [2022-11-18 18:37:45,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 144 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:45,489 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:45,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:45,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1716141911, now seen corresponding path program 1 times [2022-11-18 18:37:45,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:45,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870215536] [2022-11-18 18:37:45,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:45,490 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:45,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:45,490 INFO L229 MonitoredProcess]: Starting monitored process 145 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:45,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (145)] Waiting until timeout for monitored process [2022-11-18 18:37:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:46,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-18 18:37:46,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:46,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 18:37:46,261 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-11-18 18:37:46,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-18 18:37:46,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:37:46,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:37:51,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:37:51,023 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:51,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870215536] [2022-11-18 18:37:51,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870215536] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:37:51,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:37:51,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-11-18 18:37:51,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420469250] [2022-11-18 18:37:51,024 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:37:51,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:37:51,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:51,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:37:51,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:37:51,024 INFO L87 Difference]: Start difference. First operand 1333 states and 4448 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:51,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:51,482 INFO L93 Difference]: Finished difference Result 1372 states and 4527 transitions. [2022-11-18 18:37:51,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:37:51,483 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:37:51,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:51,486 INFO L225 Difference]: With dead ends: 1372 [2022-11-18 18:37:51,486 INFO L226 Difference]: Without dead ends: 1372 [2022-11-18 18:37:51,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:37:51,486 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 201 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:51,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 201 Unchecked, 0.4s Time] [2022-11-18 18:37:51,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2022-11-18 18:37:51,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1351. [2022-11-18 18:37:51,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1351 states, 1310 states have (on average 3.4251908396946567) internal successors, (4487), 1350 states have internal predecessors, (4487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:51,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1351 states to 1351 states and 4487 transitions. [2022-11-18 18:37:51,507 INFO L78 Accepts]: Start accepts. Automaton has 1351 states and 4487 transitions. Word has length 14 [2022-11-18 18:37:51,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:51,507 INFO L495 AbstractCegarLoop]: Abstraction has 1351 states and 4487 transitions. [2022-11-18 18:37:51,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:51,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1351 states and 4487 transitions. [2022-11-18 18:37:51,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:37:51,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:51,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:51,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (145)] Ended with exit code 0 [2022-11-18 18:37:51,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:51,708 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:51,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:51,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1716141946, now seen corresponding path program 1 times [2022-11-18 18:37:51,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:51,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136392404] [2022-11-18 18:37:51,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:51,709 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:51,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:51,709 INFO L229 MonitoredProcess]: Starting monitored process 146 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:51,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (146)] Waiting until timeout for monitored process [2022-11-18 18:37:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:52,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:37:52,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:52,398 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:37:52,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:37:52,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:52,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:37:52,565 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:37:52,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:37:52,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 18:37:52,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:52,837 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:52,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136392404] [2022-11-18 18:37:52,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136392404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:52,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:52,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:37:52,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174567131] [2022-11-18 18:37:52,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:52,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:37:52,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:52,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:37:52,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:52,838 INFO L87 Difference]: Start difference. First operand 1351 states and 4487 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:53,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:53,194 INFO L93 Difference]: Finished difference Result 1358 states and 4503 transitions. [2022-11-18 18:37:53,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:37:53,195 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:37:53,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:53,198 INFO L225 Difference]: With dead ends: 1358 [2022-11-18 18:37:53,198 INFO L226 Difference]: Without dead ends: 1358 [2022-11-18 18:37:53,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:53,198 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:53,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 48 Unchecked, 0.3s Time] [2022-11-18 18:37:53,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2022-11-18 18:37:53,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 1355. [2022-11-18 18:37:53,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1355 states, 1314 states have (on average 3.4216133942161338) internal successors, (4496), 1354 states have internal predecessors, (4496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:53,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1355 states to 1355 states and 4496 transitions. [2022-11-18 18:37:53,219 INFO L78 Accepts]: Start accepts. Automaton has 1355 states and 4496 transitions. Word has length 14 [2022-11-18 18:37:53,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:53,219 INFO L495 AbstractCegarLoop]: Abstraction has 1355 states and 4496 transitions. [2022-11-18 18:37:53,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:53,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 4496 transitions. [2022-11-18 18:37:53,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:37:53,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:53,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:53,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (146)] Ended with exit code 0 [2022-11-18 18:37:53,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 146 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:53,421 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:53,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:53,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1776181227, now seen corresponding path program 1 times [2022-11-18 18:37:53,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:53,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [91799444] [2022-11-18 18:37:53,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:53,422 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:53,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:53,422 INFO L229 MonitoredProcess]: Starting monitored process 147 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:53,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (147)] Waiting until timeout for monitored process [2022-11-18 18:37:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:53,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 18:37:53,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:54,134 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:37:54,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:37:54,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:54,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:37:54,304 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:37:54,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:37:54,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 18:37:54,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:54,628 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:54,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [91799444] [2022-11-18 18:37:54,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [91799444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:54,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:54,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:37:54,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214394082] [2022-11-18 18:37:54,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:54,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:37:54,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:54,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:37:54,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:54,629 INFO L87 Difference]: Start difference. First operand 1355 states and 4496 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:54,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:54,963 INFO L93 Difference]: Finished difference Result 1387 states and 4599 transitions. [2022-11-18 18:37:54,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:37:54,964 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:37:54,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:54,967 INFO L225 Difference]: With dead ends: 1387 [2022-11-18 18:37:54,967 INFO L226 Difference]: Without dead ends: 1387 [2022-11-18 18:37:54,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:54,968 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:54,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 58 Unchecked, 0.3s Time] [2022-11-18 18:37:54,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2022-11-18 18:37:54,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1359. [2022-11-18 18:37:54,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 1318 states have (on average 3.4226100151745067) internal successors, (4511), 1358 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:54,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 4511 transitions. [2022-11-18 18:37:54,988 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 4511 transitions. Word has length 14 [2022-11-18 18:37:54,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:54,988 INFO L495 AbstractCegarLoop]: Abstraction has 1359 states and 4511 transitions. [2022-11-18 18:37:54,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:54,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 4511 transitions. [2022-11-18 18:37:54,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:37:54,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:54,989 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:55,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (147)] Ended with exit code 0 [2022-11-18 18:37:55,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:55,190 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:55,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:55,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1773053172, now seen corresponding path program 1 times [2022-11-18 18:37:55,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:55,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146520473] [2022-11-18 18:37:55,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:55,190 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:55,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:55,191 INFO L229 MonitoredProcess]: Starting monitored process 148 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:55,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (148)] Waiting until timeout for monitored process [2022-11-18 18:37:55,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:55,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:37:55,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:55,879 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:37:55,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:37:55,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:55,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:37:56,051 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:37:56,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:37:56,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 18:37:56,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:56,325 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:56,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146520473] [2022-11-18 18:37:56,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146520473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:56,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:56,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:37:56,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020727642] [2022-11-18 18:37:56,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:56,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:37:56,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:56,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:37:56,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:56,326 INFO L87 Difference]: Start difference. First operand 1359 states and 4511 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:56,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:56,649 INFO L93 Difference]: Finished difference Result 1362 states and 4514 transitions. [2022-11-18 18:37:56,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:37:56,650 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:37:56,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:56,653 INFO L225 Difference]: With dead ends: 1362 [2022-11-18 18:37:56,653 INFO L226 Difference]: Without dead ends: 1362 [2022-11-18 18:37:56,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:56,654 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:56,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 48 Unchecked, 0.3s Time] [2022-11-18 18:37:56,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2022-11-18 18:37:56,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1362. [2022-11-18 18:37:56,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1321 states have (on average 3.417108251324754) internal successors, (4514), 1361 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:56,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 4514 transitions. [2022-11-18 18:37:56,691 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 4514 transitions. Word has length 14 [2022-11-18 18:37:56,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:56,691 INFO L495 AbstractCegarLoop]: Abstraction has 1362 states and 4514 transitions. [2022-11-18 18:37:56,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:56,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 4514 transitions. [2022-11-18 18:37:56,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:37:56,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:56,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:56,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (148)] Forceful destruction successful, exit code 0 [2022-11-18 18:37:56,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 148 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:56,893 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:56,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:56,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1777097277, now seen corresponding path program 2 times [2022-11-18 18:37:56,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:56,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555036961] [2022-11-18 18:37:56,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:37:56,894 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:56,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:56,895 INFO L229 MonitoredProcess]: Starting monitored process 149 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:56,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (149)] Waiting until timeout for monitored process [2022-11-18 18:37:57,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:37:57,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:37:57,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:37:57,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:57,465 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:37:57,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:37:57,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:57,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:37:57,645 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:37:57,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:37:57,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 18:37:57,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:57,930 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:57,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555036961] [2022-11-18 18:37:57,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555036961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:57,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:57,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:37:57,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391426344] [2022-11-18 18:37:57,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:57,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:37:57,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:57,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:37:57,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:57,931 INFO L87 Difference]: Start difference. First operand 1362 states and 4514 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:58,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:58,244 INFO L93 Difference]: Finished difference Result 1367 states and 4527 transitions. [2022-11-18 18:37:58,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:37:58,245 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:37:58,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:58,248 INFO L225 Difference]: With dead ends: 1367 [2022-11-18 18:37:58,248 INFO L226 Difference]: Without dead ends: 1367 [2022-11-18 18:37:58,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:58,249 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:58,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 45 Unchecked, 0.3s Time] [2022-11-18 18:37:58,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2022-11-18 18:37:58,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 1363. [2022-11-18 18:37:58,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1322 states have (on average 3.4167927382753405) internal successors, (4517), 1362 states have internal predecessors, (4517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:58,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 4517 transitions. [2022-11-18 18:37:58,270 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 4517 transitions. Word has length 14 [2022-11-18 18:37:58,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:58,270 INFO L495 AbstractCegarLoop]: Abstraction has 1363 states and 4517 transitions. [2022-11-18 18:37:58,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:58,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 4517 transitions. [2022-11-18 18:37:58,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:37:58,271 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:58,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:58,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (149)] Ended with exit code 0 [2022-11-18 18:37:58,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 149 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:58,471 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:58,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:58,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1777094332, now seen corresponding path program 1 times [2022-11-18 18:37:58,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:58,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550905891] [2022-11-18 18:37:58,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:58,472 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:58,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:58,473 INFO L229 MonitoredProcess]: Starting monitored process 150 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:58,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (150)] Waiting until timeout for monitored process [2022-11-18 18:37:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:59,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 18:37:59,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:59,126 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-18 18:37:59,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2022-11-18 18:37:59,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:59,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:37:59,279 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:37:59,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:37:59,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 18:37:59,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:59,414 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:59,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550905891] [2022-11-18 18:37:59,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550905891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:59,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:59,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:37:59,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026737594] [2022-11-18 18:37:59,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:59,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:37:59,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:59,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:37:59,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:37:59,415 INFO L87 Difference]: Start difference. First operand 1363 states and 4517 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:59,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:59,752 INFO L93 Difference]: Finished difference Result 1364 states and 4521 transitions. [2022-11-18 18:37:59,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:37:59,753 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:37:59,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:59,756 INFO L225 Difference]: With dead ends: 1364 [2022-11-18 18:37:59,756 INFO L226 Difference]: Without dead ends: 1364 [2022-11-18 18:37:59,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:37:59,757 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:59,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 43 Unchecked, 0.3s Time] [2022-11-18 18:37:59,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2022-11-18 18:37:59,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1364. [2022-11-18 18:37:59,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 1323 states have (on average 3.417233560090703) internal successors, (4521), 1363 states have internal predecessors, (4521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:59,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 4521 transitions. [2022-11-18 18:37:59,777 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 4521 transitions. Word has length 14 [2022-11-18 18:37:59,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:59,777 INFO L495 AbstractCegarLoop]: Abstraction has 1364 states and 4521 transitions. [2022-11-18 18:37:59,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:59,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 4521 transitions. [2022-11-18 18:37:59,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:37:59,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:59,778 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:59,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (150)] Ended with exit code 0 [2022-11-18 18:37:59,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:59,979 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:37:59,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:59,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1777094022, now seen corresponding path program 2 times [2022-11-18 18:37:59,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:59,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180113339] [2022-11-18 18:37:59,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:37:59,979 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:59,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:59,980 INFO L229 MonitoredProcess]: Starting monitored process 151 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:59,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (151)] Waiting until timeout for monitored process [2022-11-18 18:38:00,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:38:00,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:38:00,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:38:00,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:00,571 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:38:00,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:38:00,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:00,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:38:00,740 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:38:00,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:38:01,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 18:38:01,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:38:01,137 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:38:01,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180113339] [2022-11-18 18:38:01,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180113339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:01,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:01,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:38:01,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260071256] [2022-11-18 18:38:01,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:01,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:38:01,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:38:01,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:38:01,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:38:01,138 INFO L87 Difference]: Start difference. First operand 1364 states and 4521 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:01,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:01,455 INFO L93 Difference]: Finished difference Result 1367 states and 4525 transitions. [2022-11-18 18:38:01,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:38:01,455 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:38:01,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:01,458 INFO L225 Difference]: With dead ends: 1367 [2022-11-18 18:38:01,458 INFO L226 Difference]: Without dead ends: 1367 [2022-11-18 18:38:01,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:38:01,459 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:01,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 45 Unchecked, 0.3s Time] [2022-11-18 18:38:01,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2022-11-18 18:38:01,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 1364. [2022-11-18 18:38:01,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 1323 states have (on average 3.417233560090703) internal successors, (4521), 1363 states have internal predecessors, (4521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:01,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 4521 transitions. [2022-11-18 18:38:01,480 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 4521 transitions. Word has length 14 [2022-11-18 18:38:01,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:01,480 INFO L495 AbstractCegarLoop]: Abstraction has 1364 states and 4521 transitions. [2022-11-18 18:38:01,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:01,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 4521 transitions. [2022-11-18 18:38:01,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:38:01,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:01,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:01,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (151)] Forceful destruction successful, exit code 0 [2022-11-18 18:38:01,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:01,682 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:38:01,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:01,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1777095634, now seen corresponding path program 1 times [2022-11-18 18:38:01,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:38:01,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234769813] [2022-11-18 18:38:01,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:01,683 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:01,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:38:01,684 INFO L229 MonitoredProcess]: Starting monitored process 152 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:38:01,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (152)] Waiting until timeout for monitored process [2022-11-18 18:38:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:02,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:38:02,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:02,401 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:38:02,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:38:02,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:02,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:38:02,571 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:38:02,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:38:02,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 18:38:02,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:38:02,868 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:38:02,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234769813] [2022-11-18 18:38:02,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234769813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:02,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:02,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:38:02,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646213868] [2022-11-18 18:38:02,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:02,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:38:02,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:38:02,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:38:02,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:38:02,870 INFO L87 Difference]: Start difference. First operand 1364 states and 4521 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:03,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:03,195 INFO L93 Difference]: Finished difference Result 1370 states and 4537 transitions. [2022-11-18 18:38:03,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:38:03,196 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:38:03,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:03,199 INFO L225 Difference]: With dead ends: 1370 [2022-11-18 18:38:03,199 INFO L226 Difference]: Without dead ends: 1370 [2022-11-18 18:38:03,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:38:03,199 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:03,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 45 Unchecked, 0.3s Time] [2022-11-18 18:38:03,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2022-11-18 18:38:03,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1365. [2022-11-18 18:38:03,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1324 states have (on average 3.416918429003021) internal successors, (4524), 1364 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:03,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 4524 transitions. [2022-11-18 18:38:03,221 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 4524 transitions. Word has length 14 [2022-11-18 18:38:03,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:03,222 INFO L495 AbstractCegarLoop]: Abstraction has 1365 states and 4524 transitions. [2022-11-18 18:38:03,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:03,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 4524 transitions. [2022-11-18 18:38:03,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:38:03,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:03,222 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:03,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (152)] Ended with exit code 0 [2022-11-18 18:38:03,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:03,423 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:38:03,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:03,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1777305597, now seen corresponding path program 3 times [2022-11-18 18:38:03,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:38:03,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973144042] [2022-11-18 18:38:03,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:38:03,424 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:03,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:38:03,424 INFO L229 MonitoredProcess]: Starting monitored process 153 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:38:03,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (153)] Waiting until timeout for monitored process [2022-11-18 18:38:03,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 18:38:03,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:38:03,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:38:03,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:04,060 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:38:04,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:38:04,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:04,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:38:04,227 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:38:04,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:38:04,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 18:38:04,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:38:04,517 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:38:04,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973144042] [2022-11-18 18:38:04,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [973144042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:04,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:04,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:38:04,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926343122] [2022-11-18 18:38:04,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:04,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:38:04,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:38:04,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:38:04,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:38:04,518 INFO L87 Difference]: Start difference. First operand 1365 states and 4524 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:04,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:04,832 INFO L93 Difference]: Finished difference Result 1373 states and 4553 transitions. [2022-11-18 18:38:04,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:38:04,833 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:38:04,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:04,836 INFO L225 Difference]: With dead ends: 1373 [2022-11-18 18:38:04,836 INFO L226 Difference]: Without dead ends: 1373 [2022-11-18 18:38:04,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:38:04,837 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:04,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 48 Unchecked, 0.3s Time] [2022-11-18 18:38:04,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2022-11-18 18:38:04,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1364. [2022-11-18 18:38:04,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 1323 states have (on average 3.416477702191988) internal successors, (4520), 1363 states have internal predecessors, (4520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:04,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 4520 transitions. [2022-11-18 18:38:04,872 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 4520 transitions. Word has length 14 [2022-11-18 18:38:04,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:04,872 INFO L495 AbstractCegarLoop]: Abstraction has 1364 states and 4520 transitions. [2022-11-18 18:38:04,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:04,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 4520 transitions. [2022-11-18 18:38:04,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:38:04,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:04,873 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:04,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (153)] Forceful destruction successful, exit code 0 [2022-11-18 18:38:05,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:05,073 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:38:05,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:05,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1777204692, now seen corresponding path program 3 times [2022-11-18 18:38:05,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:38:05,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909007432] [2022-11-18 18:38:05,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:38:05,074 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:05,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:38:05,075 INFO L229 MonitoredProcess]: Starting monitored process 154 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:38:05,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (154)] Waiting until timeout for monitored process [2022-11-18 18:38:05,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 18:38:05,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:38:05,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:38:05,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:05,660 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:38:05,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:38:05,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:05,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:38:05,833 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:38:05,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:38:06,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 18:38:06,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:38:06,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:38:06,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909007432] [2022-11-18 18:38:06,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1909007432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:06,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:06,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:38:06,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357696431] [2022-11-18 18:38:06,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:06,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:38:06,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:38:06,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:38:06,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:38:06,111 INFO L87 Difference]: Start difference. First operand 1364 states and 4520 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:06,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:06,434 INFO L93 Difference]: Finished difference Result 1366 states and 4522 transitions. [2022-11-18 18:38:06,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:38:06,435 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:38:06,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:06,438 INFO L225 Difference]: With dead ends: 1366 [2022-11-18 18:38:06,438 INFO L226 Difference]: Without dead ends: 1366 [2022-11-18 18:38:06,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:38:06,439 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:06,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 73 Unchecked, 0.3s Time] [2022-11-18 18:38:06,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2022-11-18 18:38:06,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1364. [2022-11-18 18:38:06,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 1323 states have (on average 3.416477702191988) internal successors, (4520), 1363 states have internal predecessors, (4520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:06,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 4520 transitions. [2022-11-18 18:38:06,460 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 4520 transitions. Word has length 14 [2022-11-18 18:38:06,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:06,461 INFO L495 AbstractCegarLoop]: Abstraction has 1364 states and 4520 transitions. [2022-11-18 18:38:06,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:06,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 4520 transitions. [2022-11-18 18:38:06,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:38:06,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:06,461 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:06,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (154)] Ended with exit code 0 [2022-11-18 18:38:06,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 154 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:06,662 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:38:06,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:06,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1777254664, now seen corresponding path program 2 times [2022-11-18 18:38:06,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:38:06,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [275713439] [2022-11-18 18:38:06,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:38:06,663 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:06,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:38:06,663 INFO L229 MonitoredProcess]: Starting monitored process 155 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:38:06,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (155)] Waiting until timeout for monitored process [2022-11-18 18:38:07,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:38:07,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:38:07,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:38:07,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:07,241 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:38:07,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:38:07,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:07,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:38:07,406 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:38:07,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:38:07,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 18:38:07,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:38:07,689 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:38:07,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [275713439] [2022-11-18 18:38:07,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [275713439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:07,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:07,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:38:07,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512837327] [2022-11-18 18:38:07,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:07,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:38:07,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:38:07,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:38:07,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:38:07,690 INFO L87 Difference]: Start difference. First operand 1364 states and 4520 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:08,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:08,003 INFO L93 Difference]: Finished difference Result 1369 states and 4532 transitions. [2022-11-18 18:38:08,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:38:08,003 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:38:08,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:08,006 INFO L225 Difference]: With dead ends: 1369 [2022-11-18 18:38:08,006 INFO L226 Difference]: Without dead ends: 1369 [2022-11-18 18:38:08,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:38:08,007 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:08,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 73 Unchecked, 0.3s Time] [2022-11-18 18:38:08,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2022-11-18 18:38:08,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1365. [2022-11-18 18:38:08,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1324 states have (on average 3.415407854984894) internal successors, (4522), 1364 states have internal predecessors, (4522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:08,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 4522 transitions. [2022-11-18 18:38:08,027 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 4522 transitions. Word has length 14 [2022-11-18 18:38:08,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:08,028 INFO L495 AbstractCegarLoop]: Abstraction has 1365 states and 4522 transitions. [2022-11-18 18:38:08,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:08,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 4522 transitions. [2022-11-18 18:38:08,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:38:08,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:08,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:08,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (155)] Ended with exit code 0 [2022-11-18 18:38:08,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:08,229 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:38:08,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:08,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1774602304, now seen corresponding path program 3 times [2022-11-18 18:38:08,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:38:08,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [362731251] [2022-11-18 18:38:08,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:38:08,230 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:08,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:38:08,231 INFO L229 MonitoredProcess]: Starting monitored process 156 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:38:08,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (156)] Waiting until timeout for monitored process [2022-11-18 18:38:08,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 18:38:08,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:38:08,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:38:08,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:08,824 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:38:08,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:38:08,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:08,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:38:09,015 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:38:09,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:38:09,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 18:38:09,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:38:09,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:38:09,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [362731251] [2022-11-18 18:38:09,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [362731251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:09,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:09,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:38:09,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255771265] [2022-11-18 18:38:09,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:09,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:38:09,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:38:09,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:38:09,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:38:09,292 INFO L87 Difference]: Start difference. First operand 1365 states and 4522 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:09,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:09,638 INFO L93 Difference]: Finished difference Result 1381 states and 4561 transitions. [2022-11-18 18:38:09,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:38:09,639 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:38:09,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:09,642 INFO L225 Difference]: With dead ends: 1381 [2022-11-18 18:38:09,642 INFO L226 Difference]: Without dead ends: 1381 [2022-11-18 18:38:09,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:38:09,643 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:09,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 84 Unchecked, 0.3s Time] [2022-11-18 18:38:09,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2022-11-18 18:38:09,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1368. [2022-11-18 18:38:09,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 1327 states have (on average 3.4129615674453655) internal successors, (4529), 1367 states have internal predecessors, (4529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:09,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 4529 transitions. [2022-11-18 18:38:09,665 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 4529 transitions. Word has length 14 [2022-11-18 18:38:09,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:09,665 INFO L495 AbstractCegarLoop]: Abstraction has 1368 states and 4529 transitions. [2022-11-18 18:38:09,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:09,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 4529 transitions. [2022-11-18 18:38:09,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:38:09,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:09,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:09,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (156)] Ended with exit code 0 [2022-11-18 18:38:09,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 156 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:09,867 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:38:09,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:09,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1718707816, now seen corresponding path program 2 times [2022-11-18 18:38:09,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:38:09,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790577842] [2022-11-18 18:38:09,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:38:09,868 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:09,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:38:09,869 INFO L229 MonitoredProcess]: Starting monitored process 157 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:38:09,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (157)] Waiting until timeout for monitored process [2022-11-18 18:38:10,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:38:10,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:38:10,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:38:10,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:10,451 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:38:10,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:38:10,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:10,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:38:10,619 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:38:10,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:38:10,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 18:38:10,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:38:10,941 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:38:10,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790577842] [2022-11-18 18:38:10,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790577842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:10,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:10,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:38:10,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640119337] [2022-11-18 18:38:10,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:10,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:38:10,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:38:10,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:38:10,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:38:10,942 INFO L87 Difference]: Start difference. First operand 1368 states and 4529 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:11,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:11,299 INFO L93 Difference]: Finished difference Result 1376 states and 4547 transitions. [2022-11-18 18:38:11,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:38:11,300 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:38:11,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:11,303 INFO L225 Difference]: With dead ends: 1376 [2022-11-18 18:38:11,303 INFO L226 Difference]: Without dead ends: 1376 [2022-11-18 18:38:11,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:38:11,304 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:11,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 48 Unchecked, 0.3s Time] [2022-11-18 18:38:11,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2022-11-18 18:38:11,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1366. [2022-11-18 18:38:11,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 1325 states have (on average 3.4150943396226414) internal successors, (4525), 1365 states have internal predecessors, (4525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:11,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 4525 transitions. [2022-11-18 18:38:11,324 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 4525 transitions. Word has length 14 [2022-11-18 18:38:11,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:11,324 INFO L495 AbstractCegarLoop]: Abstraction has 1366 states and 4525 transitions. [2022-11-18 18:38:11,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:11,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 4525 transitions. [2022-11-18 18:38:11,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:38:11,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:11,325 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:11,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (157)] Ended with exit code 0 [2022-11-18 18:38:11,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:11,525 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:38:11,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:11,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1718593426, now seen corresponding path program 3 times [2022-11-18 18:38:11,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:38:11,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2031290947] [2022-11-18 18:38:11,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:38:11,526 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:11,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:38:11,527 INFO L229 MonitoredProcess]: Starting monitored process 158 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:38:11,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (158)] Waiting until timeout for monitored process [2022-11-18 18:38:11,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 18:38:11,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:38:11,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:38:11,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:12,125 INFO L321 Elim1Store]: treesize reduction 93, result has 26.8 percent of original size [2022-11-18 18:38:12,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2022-11-18 18:38:12,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:12,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 18:38:12,299 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:38:12,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:38:12,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 18:38:12,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:38:12,609 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:38:12,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2031290947] [2022-11-18 18:38:12,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2031290947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:12,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:12,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:38:12,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985125214] [2022-11-18 18:38:12,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:12,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:38:12,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:38:12,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:38:12,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:38:12,610 INFO L87 Difference]: Start difference. First operand 1366 states and 4525 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:12,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:12,928 INFO L93 Difference]: Finished difference Result 1375 states and 4544 transitions. [2022-11-18 18:38:12,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:38:12,928 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:38:12,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:12,931 INFO L225 Difference]: With dead ends: 1375 [2022-11-18 18:38:12,931 INFO L226 Difference]: Without dead ends: 1375 [2022-11-18 18:38:12,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:38:12,932 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:12,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 74 Unchecked, 0.3s Time] [2022-11-18 18:38:12,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2022-11-18 18:38:12,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1365. [2022-11-18 18:38:12,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1324 states have (on average 3.415407854984894) internal successors, (4522), 1364 states have internal predecessors, (4522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:12,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 4522 transitions. [2022-11-18 18:38:12,951 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 4522 transitions. Word has length 14 [2022-11-18 18:38:12,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:12,951 INFO L495 AbstractCegarLoop]: Abstraction has 1365 states and 4522 transitions. [2022-11-18 18:38:12,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:12,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 4522 transitions. [2022-11-18 18:38:12,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 18:38:12,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:12,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:12,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (158)] Ended with exit code 0 [2022-11-18 18:38:13,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:13,152 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:38:13,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:13,152 INFO L85 PathProgramCache]: Analyzing trace with hash 795404742, now seen corresponding path program 1 times [2022-11-18 18:38:13,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:38:13,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17407794] [2022-11-18 18:38:13,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:13,153 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:13,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:38:13,154 INFO L229 MonitoredProcess]: Starting monitored process 159 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:38:13,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (159)] Waiting until timeout for monitored process [2022-11-18 18:38:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:13,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:38:13,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:14,004 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 18:38:14,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 18:38:14,062 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:38:14,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 18:38:14,139 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 18:38:14,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 31 [2022-11-18 18:38:14,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:38:14,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:38:14,454 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:38:14,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17407794] [2022-11-18 18:38:14,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17407794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:14,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:14,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:38:14,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435629709] [2022-11-18 18:38:14,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:14,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:38:14,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:38:14,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:38:14,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:38:14,456 INFO L87 Difference]: Start difference. First operand 1365 states and 4522 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:14,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:14,804 INFO L93 Difference]: Finished difference Result 1325 states and 4377 transitions. [2022-11-18 18:38:14,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:38:14,805 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-18 18:38:14,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:14,808 INFO L225 Difference]: With dead ends: 1325 [2022-11-18 18:38:14,808 INFO L226 Difference]: Without dead ends: 1318 [2022-11-18 18:38:14,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:38:14,808 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 118 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:14,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 0 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:38:14,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2022-11-18 18:38:14,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1233. [2022-11-18 18:38:14,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 1197 states have (on average 3.462823725981621) internal successors, (4145), 1232 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:14,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 4145 transitions. [2022-11-18 18:38:14,827 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 4145 transitions. Word has length 15 [2022-11-18 18:38:14,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:14,827 INFO L495 AbstractCegarLoop]: Abstraction has 1233 states and 4145 transitions. [2022-11-18 18:38:14,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:14,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 4145 transitions. [2022-11-18 18:38:14,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 18:38:14,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:14,828 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:14,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (159)] Ended with exit code 0 [2022-11-18 18:38:15,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:15,029 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:38:15,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:15,029 INFO L85 PathProgramCache]: Analyzing trace with hash -758794578, now seen corresponding path program 1 times [2022-11-18 18:38:15,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:38:15,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155320148] [2022-11-18 18:38:15,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:15,029 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:15,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:38:15,030 INFO L229 MonitoredProcess]: Starting monitored process 160 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:38:15,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (160)] Waiting until timeout for monitored process [2022-11-18 18:38:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:15,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 18:38:15,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:15,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 18:38:15,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:38:15,780 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:38:15,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:38:15,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:38:16,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:38:16,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:38:21,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:38:21,773 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:38:21,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155320148] [2022-11-18 18:38:21,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155320148] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:38:21,773 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:38:21,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2022-11-18 18:38:21,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032150939] [2022-11-18 18:38:21,773 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:38:21,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:38:21,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:38:21,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:38:21,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:38:21,774 INFO L87 Difference]: Start difference. First operand 1233 states and 4145 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:22,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:22,427 INFO L93 Difference]: Finished difference Result 2455 states and 8679 transitions. [2022-11-18 18:38:22,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:38:22,427 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-18 18:38:22,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:22,433 INFO L225 Difference]: With dead ends: 2455 [2022-11-18 18:38:22,433 INFO L226 Difference]: Without dead ends: 2447 [2022-11-18 18:38:22,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:38:22,434 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 78 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 155 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:22,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 0 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 155 Unchecked, 0.6s Time] [2022-11-18 18:38:22,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2447 states. [2022-11-18 18:38:22,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2447 to 1603. [2022-11-18 18:38:22,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1567 states have (on average 3.6419910657306955) internal successors, (5707), 1602 states have internal predecessors, (5707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:22,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 5707 transitions. [2022-11-18 18:38:22,464 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 5707 transitions. Word has length 15 [2022-11-18 18:38:22,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:22,464 INFO L495 AbstractCegarLoop]: Abstraction has 1603 states and 5707 transitions. [2022-11-18 18:38:22,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:22,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 5707 transitions. [2022-11-18 18:38:22,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 18:38:22,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:22,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:22,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (160)] Ended with exit code 0 [2022-11-18 18:38:22,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 160 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:22,666 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:38:22,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:22,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1660794055, now seen corresponding path program 1 times [2022-11-18 18:38:22,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:38:22,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [611833029] [2022-11-18 18:38:22,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:22,666 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:22,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:38:22,667 INFO L229 MonitoredProcess]: Starting monitored process 161 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:38:22,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (161)] Waiting until timeout for monitored process [2022-11-18 18:38:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:23,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-18 18:38:23,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:23,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 18:38:23,627 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-11-18 18:38:23,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-18 18:38:24,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:24,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:38:28,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:38:28,613 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:38:28,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [611833029] [2022-11-18 18:38:28,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [611833029] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:38:28,613 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:38:28,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2022-11-18 18:38:28,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234701344] [2022-11-18 18:38:28,614 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:38:28,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 18:38:28,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:38:28,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 18:38:28,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:38:28,614 INFO L87 Difference]: Start difference. First operand 1603 states and 5707 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:30,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:30,590 INFO L93 Difference]: Finished difference Result 1652 states and 5813 transitions. [2022-11-18 18:38:30,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 18:38:30,591 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-18 18:38:30,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:30,595 INFO L225 Difference]: With dead ends: 1652 [2022-11-18 18:38:30,595 INFO L226 Difference]: Without dead ends: 1652 [2022-11-18 18:38:30,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:38:30,596 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 158 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:30,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 171 Invalid, 0 Unknown, 158 Unchecked, 0.7s Time] [2022-11-18 18:38:30,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2022-11-18 18:38:30,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1627. [2022-11-18 18:38:30,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1627 states, 1591 states have (on average 3.6216216216216215) internal successors, (5762), 1626 states have internal predecessors, (5762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:30,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 5762 transitions. [2022-11-18 18:38:30,622 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 5762 transitions. Word has length 15 [2022-11-18 18:38:30,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:30,622 INFO L495 AbstractCegarLoop]: Abstraction has 1627 states and 5762 transitions. [2022-11-18 18:38:30,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:30,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 5762 transitions. [2022-11-18 18:38:30,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 18:38:30,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:30,623 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:30,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (161)] Ended with exit code 0 [2022-11-18 18:38:30,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 161 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:30,824 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:38:30,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:30,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1862104017, now seen corresponding path program 2 times [2022-11-18 18:38:30,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:38:30,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1483021187] [2022-11-18 18:38:30,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:38:30,824 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:30,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:38:30,825 INFO L229 MonitoredProcess]: Starting monitored process 162 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:38:30,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (162)] Waiting until timeout for monitored process [2022-11-18 18:38:31,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:38:31,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:38:31,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 18:38:31,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:31,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:38:31,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 18:38:31,452 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:38:31,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:38:31,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:38:31,629 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:38:31,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:38:31,630 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:38:31,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1483021187] [2022-11-18 18:38:31,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1483021187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:31,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:31,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:38:31,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742807235] [2022-11-18 18:38:31,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:31,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:38:31,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:38:31,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:38:31,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:38:31,631 INFO L87 Difference]: Start difference. First operand 1627 states and 5762 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:32,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:32,177 INFO L93 Difference]: Finished difference Result 1327 states and 4584 transitions. [2022-11-18 18:38:32,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:38:32,178 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-18 18:38:32,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:32,181 INFO L225 Difference]: With dead ends: 1327 [2022-11-18 18:38:32,181 INFO L226 Difference]: Without dead ends: 1323 [2022-11-18 18:38:32,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:38:32,181 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:32,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 18:38:32,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2022-11-18 18:38:32,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 712. [2022-11-18 18:38:32,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 698 states have (on average 3.4068767908309456) internal successors, (2378), 711 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:32,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 2378 transitions. [2022-11-18 18:38:32,197 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 2378 transitions. Word has length 15 [2022-11-18 18:38:32,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:32,197 INFO L495 AbstractCegarLoop]: Abstraction has 712 states and 2378 transitions. [2022-11-18 18:38:32,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:32,197 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 2378 transitions. [2022-11-18 18:38:32,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 18:38:32,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:32,198 INFO L195 NwaCegarLoop]: trace histogram [13, 1, 1, 1, 1] [2022-11-18 18:38:32,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (162)] Ended with exit code 0 [2022-11-18 18:38:32,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 162 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:32,399 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:38:32,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:32,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1440973554, now seen corresponding path program 1 times [2022-11-18 18:38:32,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:38:32,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96325348] [2022-11-18 18:38:32,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:32,399 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:32,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:38:32,400 INFO L229 MonitoredProcess]: Starting monitored process 163 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:38:32,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (163)] Waiting until timeout for monitored process [2022-11-18 18:38:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:32,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 18:38:32,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:32,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 18:38:33,944 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:33,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:38:41,332 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:41,333 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:38:41,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96325348] [2022-11-18 18:38:41,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96325348] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:38:41,333 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:38:41,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2022-11-18 18:38:41,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415305536] [2022-11-18 18:38:41,334 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:38:41,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 18:38:41,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:38:41,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 18:38:41,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=617, Unknown=0, NotChecked=0, Total=870 [2022-11-18 18:38:41,334 INFO L87 Difference]: Start difference. First operand 712 states and 2378 transitions. Second operand has 30 states, 29 states have (on average 1.103448275862069) internal successors, (32), 30 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:56,874 WARN L233 SmtUtils]: Spent 7.83s on a formula simplification that was a NOOP. DAG size: 156 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:38:59,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:01,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:03,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:05,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:07,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:09,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:11,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:13,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:15,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:17,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:19,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:21,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:24,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:28,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:30,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:32,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:34,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:36,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:38,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:40,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:42,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:44,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:46,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:48,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:50,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:52,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:40:02,270 WARN L233 SmtUtils]: Spent 8.26s on a formula simplification that was a NOOP. DAG size: 145 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:40:10,588 WARN L233 SmtUtils]: Spent 6.37s on a formula simplification that was a NOOP. DAG size: 135 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:40:18,229 WARN L233 SmtUtils]: Spent 5.72s on a formula simplification that was a NOOP. DAG size: 124 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:41:02,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:41:02,171 INFO L93 Difference]: Finished difference Result 16940 states and 60039 transitions. [2022-11-18 18:41:02,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 18:41:02,173 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.103448275862069) internal successors, (32), 30 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 18:41:02,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:41:02,216 INFO L225 Difference]: With dead ends: 16940 [2022-11-18 18:41:02,216 INFO L226 Difference]: Without dead ends: 16940 [2022-11-18 18:41:02,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 56.8s TimeCoverageRelationStatistics Valid=643, Invalid=1163, Unknown=0, NotChecked=0, Total=1806 [2022-11-18 18:41:02,216 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 7937 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7740 mSolverCounterSat, 766 mSolverCounterUnsat, 26 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 86.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7937 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 766 IncrementalHoareTripleChecker+Valid, 7740 IncrementalHoareTripleChecker+Invalid, 26 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 90.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:41:02,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7937 Valid, 0 Invalid, 8532 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [766 Valid, 7740 Invalid, 26 Unknown, 0 Unchecked, 90.5s Time] [2022-11-18 18:41:02,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16940 states. [2022-11-18 18:41:02,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16940 to 742. [2022-11-18 18:41:02,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 728 states have (on average 3.3282967032967035) internal successors, (2423), 741 states have internal predecessors, (2423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:02,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 2423 transitions. [2022-11-18 18:41:02,321 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 2423 transitions. Word has length 17 [2022-11-18 18:41:02,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:41:02,321 INFO L495 AbstractCegarLoop]: Abstraction has 742 states and 2423 transitions. [2022-11-18 18:41:02,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.103448275862069) internal successors, (32), 30 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:02,321 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 2423 transitions. [2022-11-18 18:41:02,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 18:41:02,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:41:02,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:41:02,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (163)] Ended with exit code 0 [2022-11-18 18:41:02,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:41:02,523 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting thread3Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:41:02,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:02,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1775241011, now seen corresponding path program 1 times [2022-11-18 18:41:02,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:41:02,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1899861886] [2022-11-18 18:41:02,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:02,523 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:41:02,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:41:02,524 INFO L229 MonitoredProcess]: Starting monitored process 164 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:41:02,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (164)] Waiting until timeout for monitored process [2022-11-18 18:41:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:03,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:41:03,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:41:03,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:41:03,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:41:03,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:41:03,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:41:03,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1899861886] [2022-11-18 18:41:03,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1899861886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:41:03,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:41:03,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:41:03,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702696037] [2022-11-18 18:41:03,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:41:03,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:41:03,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:41:03,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:41:03,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:41:03,058 INFO L87 Difference]: Start difference. First operand 742 states and 2423 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:03,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:41:03,383 INFO L93 Difference]: Finished difference Result 632 states and 2008 transitions. [2022-11-18 18:41:03,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:41:03,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 18:41:03,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:41:03,386 INFO L225 Difference]: With dead ends: 632 [2022-11-18 18:41:03,386 INFO L226 Difference]: Without dead ends: 632 [2022-11-18 18:41:03,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:41:03,386 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 54 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:41:03,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 0 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:41:03,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2022-11-18 18:41:03,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 632. [2022-11-18 18:41:03,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 624 states have (on average 3.217948717948718) internal successors, (2008), 631 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:03,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 2008 transitions. [2022-11-18 18:41:03,395 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 2008 transitions. Word has length 18 [2022-11-18 18:41:03,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:41:03,395 INFO L495 AbstractCegarLoop]: Abstraction has 632 states and 2008 transitions. [2022-11-18 18:41:03,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:03,396 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 2008 transitions. [2022-11-18 18:41:03,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 18:41:03,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:41:03,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:41:03,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (164)] Ended with exit code 0 [2022-11-18 18:41:03,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:41:03,597 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting thread3Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:41:03,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:03,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1775241012, now seen corresponding path program 1 times [2022-11-18 18:41:03,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:41:03,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880958746] [2022-11-18 18:41:03,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:03,597 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:41:03,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:41:03,598 INFO L229 MonitoredProcess]: Starting monitored process 165 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:41:03,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (165)] Waiting until timeout for monitored process [2022-11-18 18:41:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:04,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:41:04,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:41:04,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:41:04,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:41:04,311 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:41:04,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880958746] [2022-11-18 18:41:04,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880958746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:41:04,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:41:04,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:41:04,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183780561] [2022-11-18 18:41:04,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:41:04,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:41:04,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:41:04,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:41:04,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:41:04,312 INFO L87 Difference]: Start difference. First operand 632 states and 2008 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:04,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:41:04,974 INFO L93 Difference]: Finished difference Result 959 states and 3023 transitions. [2022-11-18 18:41:04,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:41:04,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 18:41:04,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:41:04,976 INFO L225 Difference]: With dead ends: 959 [2022-11-18 18:41:04,976 INFO L226 Difference]: Without dead ends: 632 [2022-11-18 18:41:04,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:41:04,976 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:41:04,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 18:41:04,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2022-11-18 18:41:04,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 632. [2022-11-18 18:41:04,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 624 states have (on average 3.2163461538461537) internal successors, (2007), 631 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:04,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 2007 transitions. [2022-11-18 18:41:04,985 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 2007 transitions. Word has length 18 [2022-11-18 18:41:04,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:41:04,985 INFO L495 AbstractCegarLoop]: Abstraction has 632 states and 2007 transitions. [2022-11-18 18:41:04,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:04,985 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 2007 transitions. [2022-11-18 18:41:04,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 18:41:04,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:41:04,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:41:04,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (165)] Ended with exit code 0 [2022-11-18 18:41:05,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:41:05,186 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting thread3Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:41:05,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:05,186 INFO L85 PathProgramCache]: Analyzing trace with hash -2051158733, now seen corresponding path program 1 times [2022-11-18 18:41:05,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:41:05,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [377447799] [2022-11-18 18:41:05,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:05,187 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:41:05,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:41:05,188 INFO L229 MonitoredProcess]: Starting monitored process 166 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:41:05,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (166)] Waiting until timeout for monitored process [2022-11-18 18:41:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:05,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 18:41:05,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:41:05,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 18:41:06,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:41:06,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:41:08,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:41:08,040 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:41:08,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [377447799] [2022-11-18 18:41:08,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [377447799] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:41:08,041 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:41:08,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-18 18:41:08,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674473411] [2022-11-18 18:41:08,041 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:41:08,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:41:08,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:41:08,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:41:08,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:41:08,042 INFO L87 Difference]: Start difference. First operand 632 states and 2007 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:09,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:41:09,484 INFO L93 Difference]: Finished difference Result 1480 states and 4995 transitions. [2022-11-18 18:41:09,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:41:09,485 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-18 18:41:09,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:41:09,488 INFO L225 Difference]: With dead ends: 1480 [2022-11-18 18:41:09,488 INFO L226 Difference]: Without dead ends: 1442 [2022-11-18 18:41:09,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:41:09,488 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 115 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 197 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:41:09,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 0 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 197 Unchecked, 0.7s Time] [2022-11-18 18:41:09,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2022-11-18 18:41:09,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 1032. [2022-11-18 18:41:09,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1032 states, 1024 states have (on average 3.3037109375) internal successors, (3383), 1031 states have internal predecessors, (3383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:09,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 3383 transitions. [2022-11-18 18:41:09,505 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 3383 transitions. Word has length 19 [2022-11-18 18:41:09,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:41:09,505 INFO L495 AbstractCegarLoop]: Abstraction has 1032 states and 3383 transitions. [2022-11-18 18:41:09,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:09,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 3383 transitions. [2022-11-18 18:41:09,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 18:41:09,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:41:09,506 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1] [2022-11-18 18:41:09,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (166)] Ended with exit code 0 [2022-11-18 18:41:09,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 166 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:41:09,707 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-11-18 18:41:09,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:09,707 INFO L85 PathProgramCache]: Analyzing trace with hash 384425093, now seen corresponding path program 2 times [2022-11-18 18:41:09,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:41:09,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1984697732] [2022-11-18 18:41:09,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:41:09,708 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:41:09,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:41:09,708 INFO L229 MonitoredProcess]: Starting monitored process 167 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:41:09,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef24cbce-55d3-4b3a-a8d6-486b1558c715/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (167)] Waiting until timeout for monitored process [2022-11-18 18:41:10,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:41:10,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:41:10,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-18 18:41:10,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:41:10,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 18:41:11,483 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:41:11,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:41:19,970 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:41:19,970 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:41:19,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1984697732] [2022-11-18 18:41:19,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1984697732] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:41:19,971 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:41:19,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2022-11-18 18:41:19,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987218064] [2022-11-18 18:41:19,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:41:19,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 18:41:19,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:41:19,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 18:41:19,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=902, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 18:41:19,972 INFO L87 Difference]: Start difference. First operand 1032 states and 3383 transitions. Second operand has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:41,147 WARN L233 SmtUtils]: Spent 10.76s on a formula simplification that was a NOOP. DAG size: 189 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:41:44,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:41:46,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:41:48,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:41:50,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:41:52,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:41:54,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:41:56,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:41:58,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:42:00,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:42:02,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:42:04,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:42:06,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:42:08,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:42:10,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:42:12,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:42:14,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:42:26,461 WARN L233 SmtUtils]: Spent 8.97s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:42:29,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:42:31,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:42:33,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:42:35,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:42:37,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:42:39,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:42:41,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:42:43,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:42:45,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:42:47,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:42:49,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:42:51,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:42:53,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:42:55,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:42:57,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:42:59,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:43:11,993 WARN L233 SmtUtils]: Spent 5.69s on a formula simplification that was a NOOP. DAG size: 157 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:43:19,543 WARN L233 SmtUtils]: Spent 5.45s on a formula simplification that was a NOOP. DAG size: 146 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)