./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/selectionsort-alloca-1.i --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_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/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_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/selectionsort-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/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_c8d51346-4591-4371-bcb7-b04b0e267225/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 1c36df5364345a00481880384557a6da7ee9f3df41e2ea49d72bfaffe4fac7a5 --- 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 20:29:37,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:29:37,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:29:37,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:29:37,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:29:37,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:29:37,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:29:37,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:29:37,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:29:37,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:29:37,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:29:37,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:29:37,898 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:29:37,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:29:37,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:29:37,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:29:37,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:29:37,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:29:37,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:29:37,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:29:37,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:29:37,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:29:37,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:29:37,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:29:37,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:29:37,944 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:29:37,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:29:37,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:29:37,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:29:37,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:29:37,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:29:37,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:29:37,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:29:37,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:29:37,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:29:37,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:29:37,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:29:37,964 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:29:37,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:29:37,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:29:37,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:29:37,968 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 20:29:38,024 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:29:38,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:29:38,025 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:29:38,026 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:29:38,027 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:29:38,027 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:29:38,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:29:38,028 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:29:38,028 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:29:38,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:29:38,030 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:29:38,031 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:29:38,031 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:29:38,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:29:38,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:29:38,032 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 20:29:38,032 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 20:29:38,032 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 20:29:38,032 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:29:38,033 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 20:29:38,033 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:29:38,033 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:29:38,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:29:38,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:29:38,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:29:38,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:29:38,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:29:38,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:29:38,035 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:29:38,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:29:38,037 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_c8d51346-4591-4371-bcb7-b04b0e267225/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c36df5364345a00481880384557a6da7ee9f3df41e2ea49d72bfaffe4fac7a5 [2022-11-18 20:29:38,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:29:38,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:29:38,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:29:38,441 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:29:38,443 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:29:38,445 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/array-memsafety/selectionsort-alloca-1.i [2022-11-18 20:29:38,526 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/data/2e06bcd23/514d9d0f2f254199b37f6d016b431b16/FLAG0eaab97ea [2022-11-18 20:29:39,334 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:29:39,335 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/sv-benchmarks/c/array-memsafety/selectionsort-alloca-1.i [2022-11-18 20:29:39,368 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/data/2e06bcd23/514d9d0f2f254199b37f6d016b431b16/FLAG0eaab97ea [2022-11-18 20:29:39,388 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/data/2e06bcd23/514d9d0f2f254199b37f6d016b431b16 [2022-11-18 20:29:39,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:29:39,396 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:29:39,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:29:39,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:29:39,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:29:39,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:29:39" (1/1) ... [2022-11-18 20:29:39,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79ec85f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:29:39, skipping insertion in model container [2022-11-18 20:29:39,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:29:39" (1/1) ... [2022-11-18 20:29:39,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:29:39,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:29:39,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:29:39,926 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 20:29:39,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6b9c9c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:29:39, skipping insertion in model container [2022-11-18 20:29:39,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:29:39,927 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-18 20:29:39,930 INFO L158 Benchmark]: Toolchain (without parser) took 532.40ms. Allocated memory is still 104.9MB. Free memory was 73.3MB in the beginning and 78.8MB in the end (delta: -5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-18 20:29:39,931 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 104.9MB. Free memory is still 60.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:29:39,932 INFO L158 Benchmark]: CACSL2BoogieTranslator took 529.00ms. Allocated memory is still 104.9MB. Free memory was 73.0MB in the beginning and 78.8MB in the end (delta: -5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-18 20:29:39,935 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 104.9MB. Free memory is still 60.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 529.00ms. Allocated memory is still 104.9MB. Free memory was 73.0MB in the beginning and 78.8MB in the end (delta: -5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 534]: 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_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/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_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/selectionsort-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/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_c8d51346-4591-4371-bcb7-b04b0e267225/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 1c36df5364345a00481880384557a6da7ee9f3df41e2ea49d72bfaffe4fac7a5 --- 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 20:29:42,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:29:42,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:29:42,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:29:42,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:29:42,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:29:42,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:29:42,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:29:42,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:29:42,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:29:42,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:29:42,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:29:42,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:29:42,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:29:42,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:29:42,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:29:42,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:29:42,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:29:42,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:29:42,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:29:42,495 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:29:42,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:29:42,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:29:42,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:29:42,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:29:42,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:29:42,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:29:42,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:29:42,514 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:29:42,515 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:29:42,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:29:42,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:29:42,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:29:42,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:29:42,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:29:42,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:29:42,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:29:42,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:29:42,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:29:42,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:29:42,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:29:42,529 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-18 20:29:42,585 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:29:42,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:29:42,602 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:29:42,609 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:29:42,610 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:29:42,611 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:29:42,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:29:42,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:29:42,616 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:29:42,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:29:42,618 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:29:42,619 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:29:42,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:29:42,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:29:42,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:29:42,620 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 20:29:42,620 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 20:29:42,620 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 20:29:42,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:29:42,621 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 20:29:42,621 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 20:29:42,622 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 20:29:42,622 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:29:42,623 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:29:42,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:29:42,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:29:42,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:29:42,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:29:42,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:29:42,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:29:42,625 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 20:29:42,625 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 20:29:42,626 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 20:29:42,626 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_c8d51346-4591-4371-bcb7-b04b0e267225/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c36df5364345a00481880384557a6da7ee9f3df41e2ea49d72bfaffe4fac7a5 [2022-11-18 20:29:43,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:29:43,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:29:43,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:29:43,131 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:29:43,132 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:29:43,134 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/array-memsafety/selectionsort-alloca-1.i [2022-11-18 20:29:43,224 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/data/2928485b5/e8219b8cd63b448484a2fe7465bf2c7a/FLAGc9b270b99 [2022-11-18 20:29:43,896 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:29:43,897 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/sv-benchmarks/c/array-memsafety/selectionsort-alloca-1.i [2022-11-18 20:29:43,914 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/data/2928485b5/e8219b8cd63b448484a2fe7465bf2c7a/FLAGc9b270b99 [2022-11-18 20:29:44,167 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/data/2928485b5/e8219b8cd63b448484a2fe7465bf2c7a [2022-11-18 20:29:44,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:29:44,172 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:29:44,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:29:44,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:29:44,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:29:44,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:29:44" (1/1) ... [2022-11-18 20:29:44,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71ae3f54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:29:44, skipping insertion in model container [2022-11-18 20:29:44,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:29:44" (1/1) ... [2022-11-18 20:29:44,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:29:44,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:29:44,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:29:44,699 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-18 20:29:44,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:29:44,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:29:44,804 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:29:44,885 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:29:44,946 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:29:44,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:29:44 WrapperNode [2022-11-18 20:29:44,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:29:44,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:29:44,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:29:44,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:29:44,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:29:44" (1/1) ... [2022-11-18 20:29:44,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:29:44" (1/1) ... [2022-11-18 20:29:45,041 INFO L138 Inliner]: procedures = 117, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2022-11-18 20:29:45,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:29:45,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:29:45,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:29:45,044 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:29:45,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:29:44" (1/1) ... [2022-11-18 20:29:45,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:29:44" (1/1) ... [2022-11-18 20:29:45,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:29:44" (1/1) ... [2022-11-18 20:29:45,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:29:44" (1/1) ... [2022-11-18 20:29:45,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:29:44" (1/1) ... [2022-11-18 20:29:45,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:29:44" (1/1) ... [2022-11-18 20:29:45,113 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:29:44" (1/1) ... [2022-11-18 20:29:45,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:29:44" (1/1) ... [2022-11-18 20:29:45,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:29:45,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:29:45,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:29:45,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:29:45,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:29:44" (1/1) ... [2022-11-18 20:29:45,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:29:45,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:29:45,185 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:29:45,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:29:45,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-18 20:29:45,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:29:45,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:29:45,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-18 20:29:45,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:29:45,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:29:45,428 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:29:45,431 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:29:45,803 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:29:45,811 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:29:45,811 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 20:29:45,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:29:45 BoogieIcfgContainer [2022-11-18 20:29:45,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:29:45,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:29:45,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:29:45,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:29:45,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:29:44" (1/3) ... [2022-11-18 20:29:45,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3daadefb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:29:45, skipping insertion in model container [2022-11-18 20:29:45,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:29:44" (2/3) ... [2022-11-18 20:29:45,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3daadefb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:29:45, skipping insertion in model container [2022-11-18 20:29:45,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:29:45" (3/3) ... [2022-11-18 20:29:45,848 INFO L112 eAbstractionObserver]: Analyzing ICFG selectionsort-alloca-1.i [2022-11-18 20:29:45,872 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:29:45,872 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2022-11-18 20:29:45,926 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:29:45,933 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;@7fa83338, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:29:45,934 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-18 20:29:45,939 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 25 states have (on average 1.92) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:45,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 20:29:45,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:45,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 20:29:45,948 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:29:45,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:45,961 INFO L85 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2022-11-18 20:29:45,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:29:45,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878793930] [2022-11-18 20:29:45,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:45,978 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 20:29:45,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:29:45,985 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:45,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:46,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:29:46,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:46,203 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 20:29:46,227 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 20:29:46,227 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:29:46,228 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:29:46,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878793930] [2022-11-18 20:29:46,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878793930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:29:46,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:29:46,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:29:46,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769266099] [2022-11-18 20:29:46,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:29:46,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:29:46,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:29:46,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:29:46,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:29:46,306 INFO L87 Difference]: Start difference. First operand has 41 states, 25 states have (on average 1.92) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 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 3.0) 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 20:29:46,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:46,471 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2022-11-18 20:29:46,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:29:46,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 20:29:46,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:46,484 INFO L225 Difference]: With dead ends: 40 [2022-11-18 20:29:46,484 INFO L226 Difference]: Without dead ends: 38 [2022-11-18 20:29:46,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 20:29:46,491 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 34 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:46,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 31 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:29:46,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-18 20:29:46,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-18 20:29:46,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 24 states have (on average 1.75) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:46,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2022-11-18 20:29:46,532 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 6 [2022-11-18 20:29:46,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:46,533 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2022-11-18 20:29:46,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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 20:29:46,534 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2022-11-18 20:29:46,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 20:29:46,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:46,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 20:29:46,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Ended with exit code 0 [2022-11-18 20:29:46,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:29:46,743 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:29:46,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:46,745 INFO L85 PathProgramCache]: Analyzing trace with hash 889508874, now seen corresponding path program 1 times [2022-11-18 20:29:46,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:29:46,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288341924] [2022-11-18 20:29:46,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:46,746 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 20:29:46,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:29:46,748 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:46,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:46,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:29:46,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:46,882 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 5 [2022-11-18 20:29:46,928 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 20:29:46,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:29:46,929 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:29:46,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288341924] [2022-11-18 20:29:46,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [288341924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:29:46,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:29:46,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:29:46,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772220671] [2022-11-18 20:29:46,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:29:46,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:29:46,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:29:46,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:29:46,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:29:46,934 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 20:29:47,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:47,303 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2022-11-18 20:29:47,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:29:47,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 20:29:47,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:47,307 INFO L225 Difference]: With dead ends: 77 [2022-11-18 20:29:47,307 INFO L226 Difference]: Without dead ends: 77 [2022-11-18 20:29:47,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 20:29:47,310 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 44 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:47,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 145 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:29:47,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-18 20:29:47,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 41. [2022-11-18 20:29:47,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:47,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-11-18 20:29:47,319 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 6 [2022-11-18 20:29:47,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:47,320 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-11-18 20:29:47,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 20:29:47,321 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-11-18 20:29:47,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 20:29:47,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:47,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 20:29:47,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Ended with exit code 0 [2022-11-18 20:29:47,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:29:47,534 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:29:47,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:47,536 INFO L85 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2022-11-18 20:29:47,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:29:47,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294105304] [2022-11-18 20:29:47,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:47,537 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 20:29:47,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:29:47,540 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:47,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:47,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:47,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:29:47,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:47,663 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 20:29:47,784 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 20:29:47,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:29:47,785 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:29:47,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294105304] [2022-11-18 20:29:47,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294105304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:29:47,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:29:47,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:29:47,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143407716] [2022-11-18 20:29:47,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:29:47,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:29:47,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:29:47,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:29:47,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:29:47,794 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 20:29:47,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:47,864 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-11-18 20:29:47,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:29:47,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 20:29:47,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:47,867 INFO L225 Difference]: With dead ends: 43 [2022-11-18 20:29:47,868 INFO L226 Difference]: Without dead ends: 43 [2022-11-18 20:29:47,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 20:29:47,872 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:47,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 94 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 19 Unchecked, 0.0s Time] [2022-11-18 20:29:47,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-18 20:29:47,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2022-11-18 20:29:47,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 41 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:47,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2022-11-18 20:29:47,885 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 6 [2022-11-18 20:29:47,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:47,886 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2022-11-18 20:29:47,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 20:29:47,886 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2022-11-18 20:29:47,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 20:29:47,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:47,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:47,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 20:29:48,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:29:48,099 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:29:48,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:48,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1184052114, now seen corresponding path program 1 times [2022-11-18 20:29:48,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:29:48,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1906194491] [2022-11-18 20:29:48,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:48,103 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 20:29:48,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:29:48,108 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:48,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:48,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:29:48,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:48,293 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 20:29:48,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:29:48,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:29:48,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1906194491] [2022-11-18 20:29:48,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1906194491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:29:48,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:29:48,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:29:48,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983501698] [2022-11-18 20:29:48,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:29:48,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:29:48,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:29:48,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:29:48,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:29:48,307 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 4 states, 4 states have (on average 2.25) 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 20:29:48,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:48,371 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2022-11-18 20:29:48,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:29:48,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) 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 20:29:48,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:48,377 INFO L225 Difference]: With dead ends: 44 [2022-11-18 20:29:48,378 INFO L226 Difference]: Without dead ends: 44 [2022-11-18 20:29:48,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 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 20:29:48,381 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 45 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:48,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 68 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:29:48,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-18 20:29:48,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2022-11-18 20:29:48,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 39 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:48,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2022-11-18 20:29:48,397 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 9 [2022-11-18 20:29:48,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:48,398 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2022-11-18 20:29:48,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) 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 20:29:48,399 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2022-11-18 20:29:48,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 20:29:48,400 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:48,400 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:48,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Ended with exit code 0 [2022-11-18 20:29:48,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:29:48,620 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:29:48,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:48,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1091210163, now seen corresponding path program 1 times [2022-11-18 20:29:48,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:29:48,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1922933810] [2022-11-18 20:29:48,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:48,622 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 20:29:48,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:29:48,624 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:48,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:48,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:29:48,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:48,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:48,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:29:48,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:48,940 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:29:48,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1922933810] [2022-11-18 20:29:48,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1922933810] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:29:48,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:29:48,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 20:29:48,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728890912] [2022-11-18 20:29:48,941 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:29:48,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:29:48,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:29:48,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:29:48,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:29:48,942 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:49,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:49,053 INFO L93 Difference]: Finished difference Result 75 states and 81 transitions. [2022-11-18 20:29:49,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:29:49,055 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 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 20:29:49,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:49,056 INFO L225 Difference]: With dead ends: 75 [2022-11-18 20:29:49,056 INFO L226 Difference]: Without dead ends: 75 [2022-11-18 20:29:49,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:29:49,058 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 73 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:49,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 167 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:29:49,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-18 20:29:49,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 46. [2022-11-18 20:29:49,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 32 states have (on average 1.5625) internal successors, (50), 45 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:49,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2022-11-18 20:29:49,078 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 10 [2022-11-18 20:29:49,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:49,078 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2022-11-18 20:29:49,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:49,079 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2022-11-18 20:29:49,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 20:29:49,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:49,080 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:49,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:49,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:29:49,294 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:29:49,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:49,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1900556789, now seen corresponding path program 1 times [2022-11-18 20:29:49,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:29:49,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258298093] [2022-11-18 20:29:49,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:49,296 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 20:29:49,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:29:49,302 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:49,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:49,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 20:29:49,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:49,444 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 20:29:49,697 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 20:29:49,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:29:50,319 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 20:29:50,319 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:29:50,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258298093] [2022-11-18 20:29:50,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258298093] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:29:50,320 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:29:50,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-18 20:29:50,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645160259] [2022-11-18 20:29:50,321 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:29:50,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:29:50,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:29:50,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:29:50,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:29:50,328 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 10 states, 9 states have (on average 2.0) 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 20:29:50,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:50,958 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2022-11-18 20:29:50,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:29:50,960 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) 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 10 [2022-11-18 20:29:50,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:50,961 INFO L225 Difference]: With dead ends: 83 [2022-11-18 20:29:50,961 INFO L226 Difference]: Without dead ends: 83 [2022-11-18 20:29:50,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:29:50,962 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 73 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:50,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 189 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 37 Unchecked, 0.5s Time] [2022-11-18 20:29:50,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-18 20:29:50,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 54. [2022-11-18 20:29:50,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 40 states have (on average 1.5) internal successors, (60), 53 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:50,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2022-11-18 20:29:50,969 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 10 [2022-11-18 20:29:50,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:50,970 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2022-11-18 20:29:50,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) 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 20:29:50,970 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2022-11-18 20:29:50,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 20:29:50,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:50,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:50,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:51,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:29:51,183 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:29:51,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:51,184 INFO L85 PathProgramCache]: Analyzing trace with hash 363893229, now seen corresponding path program 1 times [2022-11-18 20:29:51,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:29:51,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [571280996] [2022-11-18 20:29:51,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:51,185 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 20:29:51,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:29:51,186 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:51,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:51,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:29:51,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:51,427 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_#t~malloc9#1.base_7| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc9#1.base_7|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc9#1.base_7| (_ bv0 1))))) is different from true [2022-11-18 20:29:51,428 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 20:29:51,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:29:51,429 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:29:51,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [571280996] [2022-11-18 20:29:51,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [571280996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:29:51,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:29:51,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:29:51,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545697579] [2022-11-18 20:29:51,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:29:51,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:29:51,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:29:51,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:29:51,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-18 20:29:51,432 INFO L87 Difference]: Start difference. First operand 54 states and 60 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 20:29:51,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:51,480 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2022-11-18 20:29:51,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:29:51,481 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 20:29:51,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:51,483 INFO L225 Difference]: With dead ends: 62 [2022-11-18 20:29:51,483 INFO L226 Difference]: Without dead ends: 60 [2022-11-18 20:29:51,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-18 20:29:51,484 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:51,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 75 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 59 Unchecked, 0.0s Time] [2022-11-18 20:29:51,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-18 20:29:51,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 55. [2022-11-18 20:29:51,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 41 states have (on average 1.4878048780487805) internal successors, (61), 54 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:51,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2022-11-18 20:29:51,491 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 13 [2022-11-18 20:29:51,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:51,491 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2022-11-18 20:29:51,491 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 20:29:51,491 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2022-11-18 20:29:51,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 20:29:51,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:51,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:51,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:51,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:29:51,707 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:29:51,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:51,707 INFO L85 PathProgramCache]: Analyzing trace with hash 363893953, now seen corresponding path program 1 times [2022-11-18 20:29:51,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:29:51,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088464336] [2022-11-18 20:29:51,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:51,708 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 20:29:51,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:29:51,709 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:51,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:51,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:29:51,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:51,826 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 20:29:51,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:29:51,827 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:29:51,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088464336] [2022-11-18 20:29:51,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088464336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:29:51,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:29:51,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:29:51,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233653476] [2022-11-18 20:29:51,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:29:51,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:29:51,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:29:51,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:29:51,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:29:51,830 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand has 4 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 20:29:51,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:51,918 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2022-11-18 20:29:51,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:29:51,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 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 20:29:51,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:51,920 INFO L225 Difference]: With dead ends: 57 [2022-11-18 20:29:51,920 INFO L226 Difference]: Without dead ends: 49 [2022-11-18 20:29:51,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 20:29:51,921 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:51,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 102 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:29:51,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-18 20:29:51,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-11-18 20:29:51,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 35 states have (on average 1.542857142857143) internal successors, (54), 48 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:51,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2022-11-18 20:29:51,925 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 13 [2022-11-18 20:29:51,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:51,925 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2022-11-18 20:29:51,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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 20:29:51,926 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2022-11-18 20:29:51,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 20:29:51,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:51,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:51,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:52,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:29:52,128 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:29:52,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:52,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1064958531, now seen corresponding path program 1 times [2022-11-18 20:29:52,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:29:52,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899046702] [2022-11-18 20:29:52,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:52,129 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 20:29:52,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:29:52,131 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:52,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:52,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:29:52,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:52,216 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 20:29:52,255 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 20:29:52,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:29:52,256 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:29:52,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [899046702] [2022-11-18 20:29:52,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [899046702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:29:52,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:29:52,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:29:52,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614883425] [2022-11-18 20:29:52,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:29:52,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:29:52,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:29:52,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:29:52,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:29:52,258 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) 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 20:29:52,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:52,443 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-11-18 20:29:52,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:29:52,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) 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 20:29:52,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:52,453 INFO L225 Difference]: With dead ends: 43 [2022-11-18 20:29:52,453 INFO L226 Difference]: Without dead ends: 43 [2022-11-18 20:29:52,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 20:29:52,454 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 44 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:52,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 25 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:29:52,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-18 20:29:52,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-18 20:29:52,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 42 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:52,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2022-11-18 20:29:52,466 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 13 [2022-11-18 20:29:52,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:52,467 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2022-11-18 20:29:52,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) 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 20:29:52,468 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2022-11-18 20:29:52,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 20:29:52,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:52,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:52,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 20:29:52,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:29:52,682 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:29:52,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:52,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1064958532, now seen corresponding path program 1 times [2022-11-18 20:29:52,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:29:52,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [264760423] [2022-11-18 20:29:52,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:52,684 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 20:29:52,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:29:52,685 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:52,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:52,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:29:52,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:52,819 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 20:29:53,146 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 20:29:53,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:29:53,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:53,615 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:29:53,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [264760423] [2022-11-18 20:29:53,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [264760423] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 20:29:53,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:29:53,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 20:29:53,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951999147] [2022-11-18 20:29:53,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:29:53,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:29:53,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:29:53,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:29:53,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:29:53,617 INFO L87 Difference]: Start difference. First operand 43 states and 48 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 20:29:54,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:54,047 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2022-11-18 20:29:54,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:29:54,049 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 20:29:54,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:54,050 INFO L225 Difference]: With dead ends: 50 [2022-11-18 20:29:54,050 INFO L226 Difference]: Without dead ends: 50 [2022-11-18 20:29:54,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:29:54,051 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 57 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:54,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 36 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:29:54,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-18 20:29:54,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2022-11-18 20:29:54,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 47 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:54,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2022-11-18 20:29:54,055 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 13 [2022-11-18 20:29:54,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:54,055 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2022-11-18 20:29:54,056 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 20:29:54,056 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2022-11-18 20:29:54,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 20:29:54,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:54,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:54,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:54,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:29:54,271 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:29:54,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:54,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1064958578, now seen corresponding path program 1 times [2022-11-18 20:29:54,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:29:54,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673901428] [2022-11-18 20:29:54,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:54,272 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 20:29:54,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:29:54,273 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:54,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:54,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:29:54,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:54,364 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 20:29:54,653 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 20:29:54,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:29:54,654 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:29:54,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673901428] [2022-11-18 20:29:54,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [673901428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:29:54,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:29:54,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:29:54,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69413968] [2022-11-18 20:29:54,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:29:54,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:29:54,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:29:54,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:29:54,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:29:54,656 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 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 20:29:55,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:55,162 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2022-11-18 20:29:55,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:29:55,163 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 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 20:29:55,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:55,164 INFO L225 Difference]: With dead ends: 64 [2022-11-18 20:29:55,164 INFO L226 Difference]: Without dead ends: 64 [2022-11-18 20:29:55,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:29:55,166 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 139 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:55,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 46 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 39 Unchecked, 0.4s Time] [2022-11-18 20:29:55,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-18 20:29:55,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 50. [2022-11-18 20:29:55,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 43 states have (on average 1.372093023255814) internal successors, (59), 49 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:55,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2022-11-18 20:29:55,171 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 13 [2022-11-18 20:29:55,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:55,172 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2022-11-18 20:29:55,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 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 20:29:55,173 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2022-11-18 20:29:55,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 20:29:55,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:55,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:55,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:55,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:29:55,385 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:29:55,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:55,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1346022463, now seen corresponding path program 1 times [2022-11-18 20:29:55,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:29:55,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232895445] [2022-11-18 20:29:55,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:55,386 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 20:29:55,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:29:55,388 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:55,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:55,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 20:29:55,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:55,499 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 20:29:55,850 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 20:29:55,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:29:55,850 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:29:55,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232895445] [2022-11-18 20:29:55,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232895445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:29:55,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:29:55,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:29:55,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141110553] [2022-11-18 20:29:55,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:29:55,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:29:55,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:29:55,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:29:55,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:29:55,852 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 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 20:29:55,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:55,893 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2022-11-18 20:29:55,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:29:55,893 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 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 20:29:55,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:55,893 INFO L225 Difference]: With dead ends: 51 [2022-11-18 20:29:55,893 INFO L226 Difference]: Without dead ends: 51 [2022-11-18 20:29:55,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:29:55,894 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:55,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 101 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 55 Unchecked, 0.0s Time] [2022-11-18 20:29:55,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-18 20:29:55,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-11-18 20:29:55,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 50 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:55,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2022-11-18 20:29:55,906 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 14 [2022-11-18 20:29:55,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:55,906 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2022-11-18 20:29:55,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 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 20:29:55,906 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2022-11-18 20:29:55,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 20:29:55,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:55,907 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2022-11-18 20:29:55,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:56,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:29:56,120 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:29:56,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:56,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1817992175, now seen corresponding path program 2 times [2022-11-18 20:29:56,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:29:56,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1549272473] [2022-11-18 20:29:56,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:29:56,121 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 20:29:56,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:29:56,122 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:56,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:29:56,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:29:56,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:29:56,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:29:56,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:56,255 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 20:29:56,749 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:56,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:29:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:57,914 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:29:57,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1549272473] [2022-11-18 20:29:57,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1549272473] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:29:57,915 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:29:57,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 20:29:57,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522755413] [2022-11-18 20:29:57,915 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:29:57,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:29:57,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:29:57,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:29:57,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:29:57,917 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 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 20:30:01,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:01,341 INFO L93 Difference]: Finished difference Result 227 states and 270 transitions. [2022-11-18 20:30:01,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:30:01,343 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 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 18 [2022-11-18 20:30:01,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:01,345 INFO L225 Difference]: With dead ends: 227 [2022-11-18 20:30:01,345 INFO L226 Difference]: Without dead ends: 227 [2022-11-18 20:30:01,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:30:01,346 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 434 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:01,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 281 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 305 Invalid, 0 Unknown, 60 Unchecked, 2.0s Time] [2022-11-18 20:30:01,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-18 20:30:01,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 67. [2022-11-18 20:30:01,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 60 states have (on average 1.3333333333333333) internal successors, (80), 66 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:01,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2022-11-18 20:30:01,352 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 18 [2022-11-18 20:30:01,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:01,352 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2022-11-18 20:30:01,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 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 20:30:01,353 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2022-11-18 20:30:01,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 20:30:01,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:01,353 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:01,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 20:30:01,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:30:01,569 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:30:01,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:01,569 INFO L85 PathProgramCache]: Analyzing trace with hash -511715546, now seen corresponding path program 1 times [2022-11-18 20:30:01,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:30:01,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810241528] [2022-11-18 20:30:01,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:01,570 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 20:30:01,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:30:01,574 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:30:01,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:30:01,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:01,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:30:01,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:01,700 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 20:30:02,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:02,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:03,762 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 20:30:03,763 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:30:03,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810241528] [2022-11-18 20:30:03,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810241528] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:03,764 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:30:03,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2022-11-18 20:30:03,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583275887] [2022-11-18 20:30:03,764 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:03,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:30:03,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:30:03,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:30:03,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:30:03,766 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 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 20:30:05,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:05,148 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2022-11-18 20:30:05,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:30:05,150 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 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 18 [2022-11-18 20:30:05,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:05,151 INFO L225 Difference]: With dead ends: 71 [2022-11-18 20:30:05,151 INFO L226 Difference]: Without dead ends: 67 [2022-11-18 20:30:05,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:30:05,152 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 30 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:05,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 160 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 164 Invalid, 0 Unknown, 73 Unchecked, 1.1s Time] [2022-11-18 20:30:05,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-18 20:30:05,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-11-18 20:30:05,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 66 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:05,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 79 transitions. [2022-11-18 20:30:05,157 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 79 transitions. Word has length 18 [2022-11-18 20:30:05,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:05,158 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 79 transitions. [2022-11-18 20:30:05,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 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 20:30:05,158 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 79 transitions. [2022-11-18 20:30:05,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 20:30:05,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:05,160 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:05,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:30:05,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:30:05,371 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:30:05,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:05,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1609243625, now seen corresponding path program 2 times [2022-11-18 20:30:05,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:30:05,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263783323] [2022-11-18 20:30:05,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:30:05,372 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 20:30:05,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:30:05,375 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:30:05,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:30:05,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:30:05,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:30:05,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:30:05,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:05,512 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 20:30:06,051 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:30:06,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:07,823 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:30:07,824 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:30:07,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263783323] [2022-11-18 20:30:07,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [263783323] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:07,824 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:30:07,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-18 20:30:07,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454653413] [2022-11-18 20:30:07,825 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:07,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:30:07,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:30:07,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:30:07,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:30:07,826 INFO L87 Difference]: Start difference. First operand 67 states and 79 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 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 20:30:13,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:13,730 INFO L93 Difference]: Finished difference Result 151 states and 174 transitions. [2022-11-18 20:30:13,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:30:13,732 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 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 22 [2022-11-18 20:30:13,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:13,733 INFO L225 Difference]: With dead ends: 151 [2022-11-18 20:30:13,734 INFO L226 Difference]: Without dead ends: 151 [2022-11-18 20:30:13,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=242, Invalid=628, Unknown=0, NotChecked=0, Total=870 [2022-11-18 20:30:13,735 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 544 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:13,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 104 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 282 Invalid, 0 Unknown, 37 Unchecked, 2.7s Time] [2022-11-18 20:30:13,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-18 20:30:13,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 91. [2022-11-18 20:30:13,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 84 states have (on average 1.380952380952381) internal successors, (116), 90 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:13,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 116 transitions. [2022-11-18 20:30:13,741 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 116 transitions. Word has length 22 [2022-11-18 20:30:13,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:13,741 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 116 transitions. [2022-11-18 20:30:13,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 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 20:30:13,742 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 116 transitions. [2022-11-18 20:30:13,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:30:13,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:13,743 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:13,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:30:13,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:30:13,958 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:30:13,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:13,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1653055190, now seen corresponding path program 1 times [2022-11-18 20:30:13,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:30:13,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217036605] [2022-11-18 20:30:13,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:13,959 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 20:30:13,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:30:13,960 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:30:13,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:30:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:14,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 20:30:14,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:14,112 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 20:30:14,655 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:30:14,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:15,488 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:30:15,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:30:15,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217036605] [2022-11-18 20:30:15,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217036605] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:15,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:30:15,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2022-11-18 20:30:15,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136351233] [2022-11-18 20:30:15,489 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:15,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:30:15,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:30:15,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:30:15,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:30:15,490 INFO L87 Difference]: Start difference. First operand 91 states and 116 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:16,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:16,308 INFO L93 Difference]: Finished difference Result 95 states and 120 transitions. [2022-11-18 20:30:16,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:30:16,309 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 23 [2022-11-18 20:30:16,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:16,310 INFO L225 Difference]: With dead ends: 95 [2022-11-18 20:30:16,310 INFO L226 Difference]: Without dead ends: 95 [2022-11-18 20:30:16,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:30:16,311 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 11 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:16,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 123 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 50 Unchecked, 0.3s Time] [2022-11-18 20:30:16,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-18 20:30:16,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2022-11-18 20:30:16,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 88 states have (on average 1.3522727272727273) internal successors, (119), 93 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:16,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 119 transitions. [2022-11-18 20:30:16,317 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 119 transitions. Word has length 23 [2022-11-18 20:30:16,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:16,317 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 119 transitions. [2022-11-18 20:30:16,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:16,318 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 119 transitions. [2022-11-18 20:30:16,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:30:16,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:16,319 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:16,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:30:16,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:30:16,533 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:30:16,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:16,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1651208148, now seen corresponding path program 1 times [2022-11-18 20:30:16,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:30:16,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287818191] [2022-11-18 20:30:16,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:16,535 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 20:30:16,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:30:16,536 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:30:16,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:30:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:16,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:30:16,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:16,808 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:30:16,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:30:16,808 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:30:16,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287818191] [2022-11-18 20:30:16,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287818191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:16,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:30:16,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:30:16,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779599266] [2022-11-18 20:30:16,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:16,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:30:16,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:30:16,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:30:16,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:30:16,810 INFO L87 Difference]: Start difference. First operand 94 states and 119 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 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 20:30:17,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:17,142 INFO L93 Difference]: Finished difference Result 132 states and 159 transitions. [2022-11-18 20:30:17,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:30:17,143 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 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 23 [2022-11-18 20:30:17,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:17,144 INFO L225 Difference]: With dead ends: 132 [2022-11-18 20:30:17,145 INFO L226 Difference]: Without dead ends: 132 [2022-11-18 20:30:17,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:30:17,146 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 95 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:17,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 68 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:30:17,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-18 20:30:17,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 109. [2022-11-18 20:30:17,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 103 states have (on average 1.3398058252427185) internal successors, (138), 108 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:17,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 138 transitions. [2022-11-18 20:30:17,152 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 138 transitions. Word has length 23 [2022-11-18 20:30:17,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:17,152 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 138 transitions. [2022-11-18 20:30:17,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 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 20:30:17,152 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 138 transitions. [2022-11-18 20:30:17,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:30:17,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:17,154 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:17,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 20:30:17,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:30:17,367 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:30:17,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:17,368 INFO L85 PathProgramCache]: Analyzing trace with hash 294852956, now seen corresponding path program 1 times [2022-11-18 20:30:17,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:30:17,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896438114] [2022-11-18 20:30:17,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:17,369 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 20:30:17,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:30:17,370 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:30:17,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:30:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:17,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 20:30:17,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:17,526 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 20:30:18,255 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:30:18,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:19,183 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:30:19,183 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:30:19,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896438114] [2022-11-18 20:30:19,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896438114] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:19,184 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:30:19,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2022-11-18 20:30:19,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864055646] [2022-11-18 20:30:19,187 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:19,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:30:19,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:30:19,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:30:19,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:30:19,189 INFO L87 Difference]: Start difference. First operand 109 states and 138 transitions. Second operand has 13 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:19,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:19,645 INFO L93 Difference]: Finished difference Result 109 states and 137 transitions. [2022-11-18 20:30:19,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:30:19,647 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 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 24 [2022-11-18 20:30:19,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:19,647 INFO L225 Difference]: With dead ends: 109 [2022-11-18 20:30:19,647 INFO L226 Difference]: Without dead ends: 109 [2022-11-18 20:30:19,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:30:19,649 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 10 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:19,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 125 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 35 Unchecked, 0.4s Time] [2022-11-18 20:30:19,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-11-18 20:30:19,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2022-11-18 20:30:19,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 100 states have (on average 1.34) internal successors, (134), 105 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:19,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 134 transitions. [2022-11-18 20:30:19,653 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 134 transitions. Word has length 24 [2022-11-18 20:30:19,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:19,653 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 134 transitions. [2022-11-18 20:30:19,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:19,654 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 134 transitions. [2022-11-18 20:30:19,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:30:19,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:19,656 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:19,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:30:19,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:30:19,857 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:30:19,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:19,857 INFO L85 PathProgramCache]: Analyzing trace with hash -623576636, now seen corresponding path program 2 times [2022-11-18 20:30:19,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:30:19,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1787023877] [2022-11-18 20:30:19,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:30:19,858 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 20:30:19,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:30:19,859 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:30:19,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:30:19,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:30:19,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:30:19,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:30:19,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:20,008 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 20:30:22,461 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:30:22,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:23,961 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:30:23,962 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:30:23,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1787023877] [2022-11-18 20:30:23,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1787023877] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:23,963 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:30:23,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2022-11-18 20:30:23,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173981792] [2022-11-18 20:30:23,963 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:23,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 20:30:23,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:30:23,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 20:30:23,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:30:23,965 INFO L87 Difference]: Start difference. First operand 106 states and 134 transitions. Second operand has 17 states, 16 states have (on average 2.875) internal successors, (46), 17 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:28,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:28,118 INFO L93 Difference]: Finished difference Result 132 states and 167 transitions. [2022-11-18 20:30:28,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 20:30:28,118 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 17 states have internal predecessors, (46), 0 states have call successors, (0), 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 28 [2022-11-18 20:30:28,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:28,120 INFO L225 Difference]: With dead ends: 132 [2022-11-18 20:30:28,120 INFO L226 Difference]: Without dead ends: 132 [2022-11-18 20:30:28,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=197, Invalid=733, Unknown=0, NotChecked=0, Total=930 [2022-11-18 20:30:28,121 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 20 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:28,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 136 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 82 Invalid, 0 Unknown, 42 Unchecked, 0.7s Time] [2022-11-18 20:30:28,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-18 20:30:28,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 126. [2022-11-18 20:30:28,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 120 states have (on average 1.375) internal successors, (165), 125 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:28,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 165 transitions. [2022-11-18 20:30:28,127 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 165 transitions. Word has length 28 [2022-11-18 20:30:28,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:28,127 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 165 transitions. [2022-11-18 20:30:28,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 17 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:28,128 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 165 transitions. [2022-11-18 20:30:28,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:30:28,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:28,129 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:28,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:30:28,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:30:28,343 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:30:28,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:28,343 INFO L85 PathProgramCache]: Analyzing trace with hash -621729594, now seen corresponding path program 1 times [2022-11-18 20:30:28,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:30:28,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [179876602] [2022-11-18 20:30:28,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:28,344 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 20:30:28,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:30:28,346 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:30:28,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:30:28,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:28,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:30:28,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:28,682 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:30:28,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:28,870 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 11 treesize of output 9 [2022-11-18 20:30:29,313 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:30:29,313 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:30:29,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [179876602] [2022-11-18 20:30:29,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [179876602] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:29,313 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:30:29,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-11-18 20:30:29,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128513907] [2022-11-18 20:30:29,314 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:29,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:30:29,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:30:29,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:30:29,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:30:29,315 INFO L87 Difference]: Start difference. First operand 126 states and 165 transitions. Second operand has 12 states, 11 states have (on average 4.090909090909091) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:33,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:33,094 INFO L93 Difference]: Finished difference Result 245 states and 291 transitions. [2022-11-18 20:30:33,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 20:30:33,095 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.090909090909091) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 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 28 [2022-11-18 20:30:33,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:33,097 INFO L225 Difference]: With dead ends: 245 [2022-11-18 20:30:33,097 INFO L226 Difference]: Without dead ends: 245 [2022-11-18 20:30:33,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=352, Invalid=838, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 20:30:33,099 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 404 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:33,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 114 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-18 20:30:33,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-11-18 20:30:33,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 119. [2022-11-18 20:30:33,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 113 states have (on average 1.3628318584070795) internal successors, (154), 118 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:33,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 154 transitions. [2022-11-18 20:30:33,105 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 154 transitions. Word has length 28 [2022-11-18 20:30:33,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:33,105 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 154 transitions. [2022-11-18 20:30:33,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.090909090909091) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:33,105 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 154 transitions. [2022-11-18 20:30:33,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 20:30:33,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:33,107 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:33,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:30:33,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:30:33,315 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:30:33,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:33,315 INFO L85 PathProgramCache]: Analyzing trace with hash 2143917058, now seen corresponding path program 2 times [2022-11-18 20:30:33,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:30:33,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618927871] [2022-11-18 20:30:33,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:30:33,316 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 20:30:33,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:30:33,318 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:30:33,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:30:33,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:30:33,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:30:33,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:30:33,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:33,485 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 20:30:35,556 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:30:35,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:37,204 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:30:37,204 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:30:37,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618927871] [2022-11-18 20:30:37,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618927871] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:37,205 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:30:37,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2022-11-18 20:30:37,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571507894] [2022-11-18 20:30:37,205 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:37,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 20:30:37,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:30:37,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 20:30:37,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:30:37,206 INFO L87 Difference]: Start difference. First operand 119 states and 154 transitions. Second operand has 17 states, 16 states have (on average 3.0) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:40,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:40,031 INFO L93 Difference]: Finished difference Result 132 states and 167 transitions. [2022-11-18 20:30:40,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 20:30:40,032 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.0) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 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 29 [2022-11-18 20:30:40,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:40,033 INFO L225 Difference]: With dead ends: 132 [2022-11-18 20:30:40,034 INFO L226 Difference]: Without dead ends: 132 [2022-11-18 20:30:40,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=145, Invalid=557, Unknown=0, NotChecked=0, Total=702 [2022-11-18 20:30:40,035 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 24 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:40,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 139 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 45 Unchecked, 0.7s Time] [2022-11-18 20:30:40,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-18 20:30:40,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 115. [2022-11-18 20:30:40,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 109 states have (on average 1.3577981651376148) internal successors, (148), 114 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:40,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 148 transitions. [2022-11-18 20:30:40,040 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 148 transitions. Word has length 29 [2022-11-18 20:30:40,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:40,041 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 148 transitions. [2022-11-18 20:30:40,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.0) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:40,041 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 148 transitions. [2022-11-18 20:30:40,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-18 20:30:40,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:40,042 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:40,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 20:30:40,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:30:40,258 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:30:40,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:40,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1767402818, now seen corresponding path program 1 times [2022-11-18 20:30:40,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:30:40,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436910243] [2022-11-18 20:30:40,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:40,259 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 20:30:40,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:30:40,261 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:30:40,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:30:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:40,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:30:40,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:40,672 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_#t~malloc9#1.base_17| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc9#1.base_17|) (_ bv0 1)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc9#1.base_17| (_ bv0 1))))) is different from true [2022-11-18 20:30:40,673 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 20:30:40,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:30:40,673 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:30:40,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436910243] [2022-11-18 20:30:40,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1436910243] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:40,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:30:40,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:30:40,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407644341] [2022-11-18 20:30:40,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:40,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:30:40,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:30:40,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:30:40,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-18 20:30:40,675 INFO L87 Difference]: Start difference. First operand 115 states and 148 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 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 20:30:40,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:40,684 INFO L93 Difference]: Finished difference Result 114 states and 147 transitions. [2022-11-18 20:30:40,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:30:40,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 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 31 [2022-11-18 20:30:40,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:40,686 INFO L225 Difference]: With dead ends: 114 [2022-11-18 20:30:40,686 INFO L226 Difference]: Without dead ends: 112 [2022-11-18 20:30:40,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-18 20:30:40,687 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:40,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 44 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 34 Unchecked, 0.0s Time] [2022-11-18 20:30:40,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-18 20:30:40,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2022-11-18 20:30:40,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 107 states have (on average 1.3457943925233644) internal successors, (144), 111 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:40,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 144 transitions. [2022-11-18 20:30:40,692 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 144 transitions. Word has length 31 [2022-11-18 20:30:40,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:40,692 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 144 transitions. [2022-11-18 20:30:40,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 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 20:30:40,692 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 144 transitions. [2022-11-18 20:30:40,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-18 20:30:40,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:40,693 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:40,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 20:30:40,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:30:40,909 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:30:40,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:40,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1767403543, now seen corresponding path program 1 times [2022-11-18 20:30:40,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:30:40,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1200471898] [2022-11-18 20:30:40,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:40,910 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 20:30:40,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:30:40,912 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:30:40,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:30:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:41,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 20:30:41,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:41,074 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 20:30:42,152 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:30:42,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:43,064 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:30:43,065 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:30:43,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1200471898] [2022-11-18 20:30:43,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1200471898] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:43,065 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:30:43,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2022-11-18 20:30:43,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221812472] [2022-11-18 20:30:43,066 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:43,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:30:43,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:30:43,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:30:43,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:30:43,067 INFO L87 Difference]: Start difference. First operand 112 states and 144 transitions. Second operand has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:44,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:44,070 INFO L93 Difference]: Finished difference Result 142 states and 179 transitions. [2022-11-18 20:30:44,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:30:44,072 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 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 31 [2022-11-18 20:30:44,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:44,073 INFO L225 Difference]: With dead ends: 142 [2022-11-18 20:30:44,073 INFO L226 Difference]: Without dead ends: 142 [2022-11-18 20:30:44,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:30:44,074 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 52 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:44,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 86 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 27 Unchecked, 0.3s Time] [2022-11-18 20:30:44,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-18 20:30:44,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 134. [2022-11-18 20:30:44,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 1.3643410852713178) internal successors, (176), 133 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:44,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 176 transitions. [2022-11-18 20:30:44,080 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 176 transitions. Word has length 31 [2022-11-18 20:30:44,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:44,080 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 176 transitions. [2022-11-18 20:30:44,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:44,080 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 176 transitions. [2022-11-18 20:30:44,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-18 20:30:44,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:44,081 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:44,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 20:30:44,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:30:44,295 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:30:44,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:44,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1767403589, now seen corresponding path program 1 times [2022-11-18 20:30:44,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:30:44,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400695530] [2022-11-18 20:30:44,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:44,296 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 20:30:44,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:30:44,297 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:30:44,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:30:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:44,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 20:30:44,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:44,438 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 20:30:45,353 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:30:45,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:47,087 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:30:47,087 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:30:47,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [400695530] [2022-11-18 20:30:47,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [400695530] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:47,088 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:30:47,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 18 [2022-11-18 20:30:47,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376108431] [2022-11-18 20:30:47,089 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:47,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:30:47,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:30:47,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:30:47,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:30:47,090 INFO L87 Difference]: Start difference. First operand 134 states and 176 transitions. Second operand has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:54,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:54,991 INFO L93 Difference]: Finished difference Result 195 states and 238 transitions. [2022-11-18 20:30:54,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 20:30:54,991 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 states have internal predecessors, (52), 0 states have call successors, (0), 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 31 [2022-11-18 20:30:54,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:54,992 INFO L225 Difference]: With dead ends: 195 [2022-11-18 20:30:54,993 INFO L226 Difference]: Without dead ends: 187 [2022-11-18 20:30:54,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=462, Invalid=1178, Unknown=0, NotChecked=0, Total=1640 [2022-11-18 20:30:54,994 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 698 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:54,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 62 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-18 20:30:54,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-11-18 20:30:54,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 136. [2022-11-18 20:30:55,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 131 states have (on average 1.366412213740458) internal successors, (179), 135 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:55,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 179 transitions. [2022-11-18 20:30:55,001 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 179 transitions. Word has length 31 [2022-11-18 20:30:55,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:55,002 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 179 transitions. [2022-11-18 20:30:55,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:55,006 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 179 transitions. [2022-11-18 20:30:55,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-18 20:30:55,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:55,007 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:55,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:30:55,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:30:55,223 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:30:55,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:55,224 INFO L85 PathProgramCache]: Analyzing trace with hash 276218793, now seen corresponding path program 3 times [2022-11-18 20:30:55,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:30:55,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1822897136] [2022-11-18 20:30:55,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:30:55,224 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 20:30:55,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:30:55,226 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:30:55,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:30:55,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 20:30:55,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:30:55,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-18 20:30:55,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:55,539 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 20:30:56,410 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:56,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:31:01,008 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:01,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:31:01,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1822897136] [2022-11-18 20:31:01,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1822897136] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:31:01,009 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:31:01,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2022-11-18 20:31:01,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914482744] [2022-11-18 20:31:01,010 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:31:01,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 20:31:01,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:31:01,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 20:31:01,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:31:01,011 INFO L87 Difference]: Start difference. First operand 136 states and 179 transitions. Second operand has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:04,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:31:16,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:16,979 INFO L93 Difference]: Finished difference Result 160 states and 201 transitions. [2022-11-18 20:31:16,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 20:31:16,979 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 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 32 [2022-11-18 20:31:16,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:16,979 INFO L225 Difference]: With dead ends: 160 [2022-11-18 20:31:16,980 INFO L226 Difference]: Without dead ends: 152 [2022-11-18 20:31:16,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=387, Invalid=1419, Unknown=0, NotChecked=0, Total=1806 [2022-11-18 20:31:16,980 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 454 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:16,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 124 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-18 20:31:16,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-18 20:31:16,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 141. [2022-11-18 20:31:16,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 136 states have (on average 1.3529411764705883) internal successors, (184), 140 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:16,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 184 transitions. [2022-11-18 20:31:16,986 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 184 transitions. Word has length 32 [2022-11-18 20:31:16,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:16,987 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 184 transitions. [2022-11-18 20:31:16,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:16,987 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 184 transitions. [2022-11-18 20:31:16,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-18 20:31:16,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:16,988 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1] [2022-11-18 20:31:17,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 20:31:17,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:31:17,195 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:31:17,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:17,195 INFO L85 PathProgramCache]: Analyzing trace with hash -563143139, now seen corresponding path program 3 times [2022-11-18 20:31:17,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:31:17,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [265527736] [2022-11-18 20:31:17,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:31:17,196 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 20:31:17,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:31:17,197 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:31:17,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:31:17,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-18 20:31:17,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:31:17,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:31:17,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:31:17,418 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 20:31:18,367 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:18,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:31:20,845 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:20,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:31:20,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [265527736] [2022-11-18 20:31:20,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [265527736] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:31:20,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:31:20,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-11-18 20:31:20,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8709797] [2022-11-18 20:31:20,846 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:31:20,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:31:20,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:31:20,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:31:20,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:31:20,848 INFO L87 Difference]: Start difference. First operand 141 states and 184 transitions. Second operand has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:34,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:34,444 INFO L93 Difference]: Finished difference Result 1339 states and 1808 transitions. [2022-11-18 20:31:34,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 20:31:34,447 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 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 34 [2022-11-18 20:31:34,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:34,452 INFO L225 Difference]: With dead ends: 1339 [2022-11-18 20:31:34,453 INFO L226 Difference]: Without dead ends: 1339 [2022-11-18 20:31:34,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=522, Invalid=1200, Unknown=0, NotChecked=0, Total=1722 [2022-11-18 20:31:34,454 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 1572 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1572 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:34,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1572 Valid, 624 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 897 Invalid, 0 Unknown, 99 Unchecked, 5.2s Time] [2022-11-18 20:31:34,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2022-11-18 20:31:34,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 173. [2022-11-18 20:31:34,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 168 states have (on average 1.3333333333333333) internal successors, (224), 172 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:34,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 224 transitions. [2022-11-18 20:31:34,481 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 224 transitions. Word has length 34 [2022-11-18 20:31:34,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:34,482 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 224 transitions. [2022-11-18 20:31:34,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:34,482 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 224 transitions. [2022-11-18 20:31:34,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-18 20:31:34,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:34,483 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:31:34,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:31:34,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:31:34,698 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:31:34,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:34,699 INFO L85 PathProgramCache]: Analyzing trace with hash 605983569, now seen corresponding path program 1 times [2022-11-18 20:31:34,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:31:34,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711777658] [2022-11-18 20:31:34,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:34,700 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 20:31:34,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:31:34,701 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:31:34,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:31:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:34,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:31:34,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:31:34,912 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 20:31:35,856 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 20:31:35,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:31:37,202 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 20:31:37,203 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:31:37,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711777658] [2022-11-18 20:31:37,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1711777658] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:31:37,203 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:31:37,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2022-11-18 20:31:37,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070917714] [2022-11-18 20:31:37,203 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:31:37,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:31:37,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:31:37,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:31:37,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:31:37,208 INFO L87 Difference]: Start difference. First operand 173 states and 224 transitions. Second operand has 15 states, 14 states have (on average 4.142857142857143) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:38,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:38,006 INFO L93 Difference]: Finished difference Result 191 states and 243 transitions. [2022-11-18 20:31:38,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:31:38,008 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.142857142857143) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 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 41 [2022-11-18 20:31:38,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:38,009 INFO L225 Difference]: With dead ends: 191 [2022-11-18 20:31:38,009 INFO L226 Difference]: Without dead ends: 191 [2022-11-18 20:31:38,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:31:38,010 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 43 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:38,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 134 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 54 Unchecked, 0.2s Time] [2022-11-18 20:31:38,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-11-18 20:31:38,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 187. [2022-11-18 20:31:38,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 182 states have (on average 1.3296703296703296) internal successors, (242), 186 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:38,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 242 transitions. [2022-11-18 20:31:38,017 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 242 transitions. Word has length 41 [2022-11-18 20:31:38,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:38,017 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 242 transitions. [2022-11-18 20:31:38,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.142857142857143) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:38,018 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 242 transitions. [2022-11-18 20:31:38,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-18 20:31:38,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:38,018 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:31:38,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:31:38,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:31:38,235 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:31:38,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:38,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1927265964, now seen corresponding path program 4 times [2022-11-18 20:31:38,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:31:38,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410913550] [2022-11-18 20:31:38,236 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:31:38,236 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 20:31:38,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:31:38,237 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:31:38,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:31:38,395 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:31:38,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:31:38,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:31:38,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:31:38,431 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 20:31:39,220 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 24 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:31:39,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:31:43,081 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:43,081 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:31:43,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410913550] [2022-11-18 20:31:43,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1410913550] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:31:43,082 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:31:43,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2022-11-18 20:31:43,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869793349] [2022-11-18 20:31:43,082 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:31:43,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 20:31:43,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:31:43,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 20:31:43,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2022-11-18 20:31:43,084 INFO L87 Difference]: Start difference. First operand 187 states and 242 transitions. Second operand has 25 states, 25 states have (on average 3.04) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:44,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:44,821 INFO L93 Difference]: Finished difference Result 204 states and 261 transitions. [2022-11-18 20:31:44,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:31:44,823 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.04) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 41 [2022-11-18 20:31:44,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:44,824 INFO L225 Difference]: With dead ends: 204 [2022-11-18 20:31:44,824 INFO L226 Difference]: Without dead ends: 202 [2022-11-18 20:31:44,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2022-11-18 20:31:44,825 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 59 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:44,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 181 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 265 Invalid, 0 Unknown, 58 Unchecked, 1.4s Time] [2022-11-18 20:31:44,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-18 20:31:44,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 200. [2022-11-18 20:31:44,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 195 states have (on average 1.317948717948718) internal successors, (257), 199 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:44,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 257 transitions. [2022-11-18 20:31:44,831 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 257 transitions. Word has length 41 [2022-11-18 20:31:44,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:44,831 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 257 transitions. [2022-11-18 20:31:44,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.04) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:44,832 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 257 transitions. [2022-11-18 20:31:44,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 20:31:44,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:44,833 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:31:44,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 20:31:45,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:31:45,048 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:31:45,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:45,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1605577749, now seen corresponding path program 1 times [2022-11-18 20:31:45,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:31:45,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530209204] [2022-11-18 20:31:45,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:45,050 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 20:31:45,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:31:45,051 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:31:45,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:31:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:31:45,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:31:45,302 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 20:31:46,264 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 20:31:46,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:31:47,559 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 20:31:47,559 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:31:47,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530209204] [2022-11-18 20:31:47,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530209204] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:31:47,560 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:31:47,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2022-11-18 20:31:47,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258912315] [2022-11-18 20:31:47,560 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:31:47,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:31:47,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:31:47,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:31:47,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:31:47,562 INFO L87 Difference]: Start difference. First operand 200 states and 257 transitions. Second operand has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:48,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:48,048 INFO L93 Difference]: Finished difference Result 207 states and 263 transitions. [2022-11-18 20:31:48,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:31:48,050 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 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 42 [2022-11-18 20:31:48,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:48,051 INFO L225 Difference]: With dead ends: 207 [2022-11-18 20:31:48,051 INFO L226 Difference]: Without dead ends: 207 [2022-11-18 20:31:48,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:31:48,052 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 44 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:48,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 103 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 32 Unchecked, 0.2s Time] [2022-11-18 20:31:48,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-11-18 20:31:48,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 200. [2022-11-18 20:31:48,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 195 states have (on average 1.317948717948718) internal successors, (257), 199 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:48,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 257 transitions. [2022-11-18 20:31:48,058 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 257 transitions. Word has length 42 [2022-11-18 20:31:48,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:48,058 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 257 transitions. [2022-11-18 20:31:48,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:48,059 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 257 transitions. [2022-11-18 20:31:48,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 20:31:48,060 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:48,060 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:31:48,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Ended with exit code 0 [2022-11-18 20:31:48,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:31:48,276 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:31:48,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:48,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1261948553, now seen corresponding path program 5 times [2022-11-18 20:31:48,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:31:48,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085195946] [2022-11-18 20:31:48,276 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:31:48,277 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 20:31:48,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:31:48,278 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:31:48,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:31:48,633 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-18 20:31:48,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:31:48,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 20:31:48,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:31:48,666 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 20:31:49,987 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 17 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:49,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:31:57,846 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:57,847 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:31:57,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085195946] [2022-11-18 20:31:57,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2085195946] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:31:57,847 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:31:57,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 32 [2022-11-18 20:31:57,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861907856] [2022-11-18 20:31:57,847 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:31:57,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 20:31:57,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:31:57,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 20:31:57,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=863, Unknown=0, NotChecked=0, Total=992 [2022-11-18 20:31:57,849 INFO L87 Difference]: Start difference. First operand 200 states and 257 transitions. Second operand has 32 states, 32 states have (on average 2.75) internal successors, (88), 32 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:06,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:32:11,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:32:19,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:32:20,000 INFO L93 Difference]: Finished difference Result 322 states and 411 transitions. [2022-11-18 20:32:20,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:32:20,003 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.75) internal successors, (88), 32 states have internal predecessors, (88), 0 states have call successors, (0), 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 45 [2022-11-18 20:32:20,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:32:20,005 INFO L225 Difference]: With dead ends: 322 [2022-11-18 20:32:20,005 INFO L226 Difference]: Without dead ends: 320 [2022-11-18 20:32:20,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 20.1s TimeCoverageRelationStatistics Valid=337, Invalid=2315, Unknown=0, NotChecked=0, Total=2652 [2022-11-18 20:32:20,007 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 176 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 258 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:32:20,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 306 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 464 Invalid, 0 Unknown, 258 Unchecked, 7.9s Time] [2022-11-18 20:32:20,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-11-18 20:32:20,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 213. [2022-11-18 20:32:20,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 208 states have (on average 1.3125) internal successors, (273), 212 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:20,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 273 transitions. [2022-11-18 20:32:20,015 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 273 transitions. Word has length 45 [2022-11-18 20:32:20,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:32:20,016 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 273 transitions. [2022-11-18 20:32:20,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.75) internal successors, (88), 32 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:20,016 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 273 transitions. [2022-11-18 20:32:20,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 20:32:20,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:32:20,017 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:32:20,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 20:32:20,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:32:20,231 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:32:20,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:20,232 INFO L85 PathProgramCache]: Analyzing trace with hash 17747592, now seen corresponding path program 2 times [2022-11-18 20:32:20,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:32:20,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1726398787] [2022-11-18 20:32:20,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:32:20,233 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 20:32:20,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:32:20,235 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:32:20,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:32:20,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:32:20,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:32:20,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:32:20,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:32:20,435 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 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 20:32:21,508 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 20:32:21,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:32:22,731 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 20:32:22,731 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:32:22,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1726398787] [2022-11-18 20:32:22,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1726398787] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:32:22,732 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:32:22,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2022-11-18 20:32:22,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783253902] [2022-11-18 20:32:22,732 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:32:22,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:32:22,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:32:22,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:32:22,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:32:22,733 INFO L87 Difference]: Start difference. First operand 213 states and 273 transitions. Second operand has 13 states, 12 states have (on average 5.5) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:23,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:32:23,264 INFO L93 Difference]: Finished difference Result 232 states and 298 transitions. [2022-11-18 20:32:23,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:32:23,266 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.5) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 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 45 [2022-11-18 20:32:23,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:32:23,267 INFO L225 Difference]: With dead ends: 232 [2022-11-18 20:32:23,267 INFO L226 Difference]: Without dead ends: 232 [2022-11-18 20:32:23,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:32:23,268 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 31 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:32:23,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 143 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 39 Unchecked, 0.2s Time] [2022-11-18 20:32:23,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-11-18 20:32:23,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 230. [2022-11-18 20:32:23,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 225 states have (on average 1.32) internal successors, (297), 229 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:23,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 297 transitions. [2022-11-18 20:32:23,273 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 297 transitions. Word has length 45 [2022-11-18 20:32:23,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:32:23,273 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 297 transitions. [2022-11-18 20:32:23,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.5) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:23,274 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 297 transitions. [2022-11-18 20:32:23,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 20:32:23,274 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:32:23,275 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:32:23,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:32:23,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:32:23,490 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:32:23,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:23,490 INFO L85 PathProgramCache]: Analyzing trace with hash 17747638, now seen corresponding path program 2 times [2022-11-18 20:32:23,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:32:23,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913473177] [2022-11-18 20:32:23,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:32:23,491 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 20:32:23,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:32:23,492 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:32:23,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:32:23,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:32:23,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:32:23,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:32:23,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:32:23,692 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 20:32:24,954 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 20:32:24,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:32:28,910 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 20:32:28,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:32:28,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913473177] [2022-11-18 20:32:28,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1913473177] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:32:28,911 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:32:28,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2022-11-18 20:32:28,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278982032] [2022-11-18 20:32:28,911 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:32:28,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 20:32:28,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:32:28,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 20:32:28,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:32:28,913 INFO L87 Difference]: Start difference. First operand 230 states and 297 transitions. Second operand has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:46,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:32:46,245 INFO L93 Difference]: Finished difference Result 507 states and 632 transitions. [2022-11-18 20:32:46,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 20:32:46,248 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 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 45 [2022-11-18 20:32:46,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:32:46,250 INFO L225 Difference]: With dead ends: 507 [2022-11-18 20:32:46,250 INFO L226 Difference]: Without dead ends: 507 [2022-11-18 20:32:46,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=702, Invalid=2160, Unknown=0, NotChecked=0, Total=2862 [2022-11-18 20:32:46,252 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 466 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:32:46,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 165 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 550 Invalid, 0 Unknown, 76 Unchecked, 7.7s Time] [2022-11-18 20:32:46,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-11-18 20:32:46,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 351. [2022-11-18 20:32:46,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 346 states have (on average 1.323699421965318) internal successors, (458), 350 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:46,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 458 transitions. [2022-11-18 20:32:46,261 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 458 transitions. Word has length 45 [2022-11-18 20:32:46,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:32:46,262 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 458 transitions. [2022-11-18 20:32:46,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:46,267 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 458 transitions. [2022-11-18 20:32:46,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-18 20:32:46,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:32:46,268 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:32:46,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:32:46,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:32:46,490 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:32:46,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:46,491 INFO L85 PathProgramCache]: Analyzing trace with hash 550176765, now seen corresponding path program 2 times [2022-11-18 20:32:46,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:32:46,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1376654405] [2022-11-18 20:32:46,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:32:46,491 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 20:32:46,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:32:46,492 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:32:46,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:32:46,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:32:46,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:32:46,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 20:32:46,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:32:46,692 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 20:32:48,166 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 20:32:48,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:32:50,691 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 22 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 20:32:50,691 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:32:50,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1376654405] [2022-11-18 20:32:50,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1376654405] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:32:50,692 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:32:50,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2022-11-18 20:32:50,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9391835] [2022-11-18 20:32:50,692 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:32:50,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:32:50,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:32:50,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:32:50,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:32:50,693 INFO L87 Difference]: Start difference. First operand 351 states and 458 transitions. Second operand has 21 states, 20 states have (on average 3.7) internal successors, (74), 21 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:52,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:32:52,591 INFO L93 Difference]: Finished difference Result 369 states and 472 transitions. [2022-11-18 20:32:52,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 20:32:52,593 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.7) internal successors, (74), 21 states have internal predecessors, (74), 0 states have call successors, (0), 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 46 [2022-11-18 20:32:52,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:32:52,595 INFO L225 Difference]: With dead ends: 369 [2022-11-18 20:32:52,595 INFO L226 Difference]: Without dead ends: 369 [2022-11-18 20:32:52,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=149, Invalid=663, Unknown=0, NotChecked=0, Total=812 [2022-11-18 20:32:52,595 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 45 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:32:52,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 137 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 61 Unchecked, 0.5s Time] [2022-11-18 20:32:52,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-11-18 20:32:52,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 347. [2022-11-18 20:32:52,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 342 states have (on average 1.3245614035087718) internal successors, (453), 346 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:52,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 453 transitions. [2022-11-18 20:32:52,604 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 453 transitions. Word has length 46 [2022-11-18 20:32:52,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:32:52,604 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 453 transitions. [2022-11-18 20:32:52,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.7) internal successors, (74), 21 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:52,605 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 453 transitions. [2022-11-18 20:32:52,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-18 20:32:52,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:32:52,606 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:32:52,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:32:52,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:32:52,819 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:32:52,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:52,819 INFO L85 PathProgramCache]: Analyzing trace with hash -124433175, now seen corresponding path program 2 times [2022-11-18 20:32:52,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:32:52,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940177926] [2022-11-18 20:32:52,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:32:52,820 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 20:32:52,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:32:52,822 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:32:52,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:32:53,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:32:53,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:32:53,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 20:32:53,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:32:53,032 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 20:32:54,433 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 20:32:54,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:32:56,980 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 20:32:56,980 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:32:56,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940177926] [2022-11-18 20:32:56,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940177926] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:32:56,981 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:32:56,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2022-11-18 20:32:56,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847623054] [2022-11-18 20:32:56,981 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:32:56,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:32:56,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:32:56,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:32:56,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:32:56,983 INFO L87 Difference]: Start difference. First operand 347 states and 453 transitions. Second operand has 21 states, 20 states have (on average 3.8) internal successors, (76), 21 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:58,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:32:58,493 INFO L93 Difference]: Finished difference Result 365 states and 467 transitions. [2022-11-18 20:32:58,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 20:32:58,494 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.8) internal successors, (76), 21 states have internal predecessors, (76), 0 states have call successors, (0), 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 47 [2022-11-18 20:32:58,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:32:58,495 INFO L225 Difference]: With dead ends: 365 [2022-11-18 20:32:58,495 INFO L226 Difference]: Without dead ends: 365 [2022-11-18 20:32:58,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2022-11-18 20:32:58,497 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 55 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:32:58,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 171 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 84 Unchecked, 0.5s Time] [2022-11-18 20:32:58,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-11-18 20:32:58,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 338. [2022-11-18 20:32:58,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 333 states have (on average 1.3213213213213213) internal successors, (440), 337 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:58,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 440 transitions. [2022-11-18 20:32:58,514 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 440 transitions. Word has length 47 [2022-11-18 20:32:58,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:32:58,514 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 440 transitions. [2022-11-18 20:32:58,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.8) internal successors, (76), 21 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:58,514 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 440 transitions. [2022-11-18 20:32:58,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-18 20:32:58,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:32:58,516 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:32:58,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 20:32:58,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:32:58,731 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:32:58,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:58,732 INFO L85 PathProgramCache]: Analyzing trace with hash 387622886, now seen corresponding path program 6 times [2022-11-18 20:32:58,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:32:58,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167206230] [2022-11-18 20:32:58,733 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:32:58,733 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 20:32:58,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:32:58,734 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:32:58,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:32:59,004 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-18 20:32:59,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:32:59,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 20:32:59,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:32:59,036 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 20:33:00,079 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-18 20:33:00,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:33:04,429 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-18 20:33:04,429 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:33:04,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167206230] [2022-11-18 20:33:04,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1167206230] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:33:04,430 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:33:04,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-11-18 20:33:04,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371495356] [2022-11-18 20:33:04,430 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:33:04,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:33:04,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:33:04,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:33:04,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:33:04,431 INFO L87 Difference]: Start difference. First operand 338 states and 440 transitions. Second operand has 22 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:46,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:33:46,132 INFO L93 Difference]: Finished difference Result 569 states and 707 transitions. [2022-11-18 20:33:46,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-11-18 20:33:46,132 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 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 49 [2022-11-18 20:33:46,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:33:46,134 INFO L225 Difference]: With dead ends: 569 [2022-11-18 20:33:46,134 INFO L226 Difference]: Without dead ends: 569 [2022-11-18 20:33:46,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1584 ImplicationChecksByTransitivity, 37.2s TimeCoverageRelationStatistics Valid=1465, Invalid=4085, Unknown=0, NotChecked=0, Total=5550 [2022-11-18 20:33:46,135 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 729 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:33:46,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 196 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 717 Invalid, 0 Unknown, 39 Unchecked, 7.0s Time] [2022-11-18 20:33:46,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-11-18 20:33:46,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 435. [2022-11-18 20:33:46,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 430 states have (on average 1.3604651162790697) internal successors, (585), 434 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:46,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 585 transitions. [2022-11-18 20:33:46,146 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 585 transitions. Word has length 49 [2022-11-18 20:33:46,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:33:46,146 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 585 transitions. [2022-11-18 20:33:46,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:46,147 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 585 transitions. [2022-11-18 20:33:46,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-18 20:33:46,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:33:46,148 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:33:46,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:33:46,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:33:46,364 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:33:46,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:46,365 INFO L85 PathProgramCache]: Analyzing trace with hash 2146511183, now seen corresponding path program 2 times [2022-11-18 20:33:46,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:33:46,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815618066] [2022-11-18 20:33:46,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:33:46,366 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 20:33:46,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:33:46,367 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:33:46,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:33:46,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:33:46,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:33:46,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 20:33:46,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:33:46,578 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 20:33:49,773 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-18 20:33:49,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:33:52,282 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-18 20:33:52,282 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:33:52,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815618066] [2022-11-18 20:33:52,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815618066] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:33:52,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:33:52,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2022-11-18 20:33:52,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182856066] [2022-11-18 20:33:52,283 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:33:52,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:33:52,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:33:52,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:33:52,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:33:52,285 INFO L87 Difference]: Start difference. First operand 435 states and 585 transitions. Second operand has 21 states, 20 states have (on average 3.3) internal successors, (66), 21 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:03,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:03,087 INFO L93 Difference]: Finished difference Result 677 states and 879 transitions. [2022-11-18 20:34:03,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-18 20:34:03,088 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.3) internal successors, (66), 21 states have internal predecessors, (66), 0 states have call successors, (0), 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 50 [2022-11-18 20:34:03,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:03,091 INFO L225 Difference]: With dead ends: 677 [2022-11-18 20:34:03,092 INFO L226 Difference]: Without dead ends: 677 [2022-11-18 20:34:03,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=545, Invalid=2107, Unknown=0, NotChecked=0, Total=2652 [2022-11-18 20:34:03,093 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 128 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 226 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:03,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 281 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 180 Invalid, 0 Unknown, 226 Unchecked, 2.0s Time] [2022-11-18 20:34:03,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2022-11-18 20:34:03,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 552. [2022-11-18 20:34:03,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 547 states have (on average 1.3711151736745886) internal successors, (750), 551 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:03,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 750 transitions. [2022-11-18 20:34:03,107 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 750 transitions. Word has length 50 [2022-11-18 20:34:03,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:03,107 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 750 transitions. [2022-11-18 20:34:03,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.3) internal successors, (66), 21 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:03,108 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 750 transitions. [2022-11-18 20:34:03,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-18 20:34:03,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:03,109 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:03,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:34:03,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:34:03,323 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:34:03,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:03,323 INFO L85 PathProgramCache]: Analyzing trace with hash 2117293527, now seen corresponding path program 1 times [2022-11-18 20:34:03,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:34:03,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707331187] [2022-11-18 20:34:03,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:03,324 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 20:34:03,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:34:03,326 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:34:03,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:34:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:03,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 20:34:03,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:03,626 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 20:34:04,860 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-18 20:34:04,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:34:07,487 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-18 20:34:07,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:34:07,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [707331187] [2022-11-18 20:34:07,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [707331187] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:34:07,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:34:07,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2022-11-18 20:34:07,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620029727] [2022-11-18 20:34:07,489 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:34:07,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:34:07,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:34:07,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:34:07,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:34:07,491 INFO L87 Difference]: Start difference. First operand 552 states and 750 transitions. Second operand has 21 states, 20 states have (on average 3.4) internal successors, (68), 21 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:15,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:15,556 INFO L93 Difference]: Finished difference Result 636 states and 844 transitions. [2022-11-18 20:34:15,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 20:34:15,556 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.4) internal successors, (68), 21 states have internal predecessors, (68), 0 states have call successors, (0), 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 51 [2022-11-18 20:34:15,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:15,559 INFO L225 Difference]: With dead ends: 636 [2022-11-18 20:34:15,559 INFO L226 Difference]: Without dead ends: 636 [2022-11-18 20:34:15,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=462, Invalid=1700, Unknown=0, NotChecked=0, Total=2162 [2022-11-18 20:34:15,560 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 68 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 167 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:15,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 246 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 131 Invalid, 0 Unknown, 167 Unchecked, 1.3s Time] [2022-11-18 20:34:15,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2022-11-18 20:34:15,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 568. [2022-11-18 20:34:15,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 563 states have (on average 1.3712255772646536) internal successors, (772), 567 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:15,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 772 transitions. [2022-11-18 20:34:15,573 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 772 transitions. Word has length 51 [2022-11-18 20:34:15,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:15,573 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 772 transitions. [2022-11-18 20:34:15,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.4) internal successors, (68), 21 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:15,574 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 772 transitions. [2022-11-18 20:34:15,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-18 20:34:15,575 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:15,575 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:15,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Ended with exit code 0 [2022-11-18 20:34:15,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:34:15,791 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:34:15,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:15,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1195941585, now seen corresponding path program 3 times [2022-11-18 20:34:15,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:34:15,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591014969] [2022-11-18 20:34:15,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:34:15,793 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 20:34:15,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:34:15,794 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:34:15,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:34:15,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 20:34:15,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:34:15,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:34:15,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:16,005 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 20:34:17,025 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-18 20:34:17,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:34:17,300 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-18 20:34:17,301 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:34:17,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591014969] [2022-11-18 20:34:17,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [591014969] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:34:17,301 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:34:17,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 8 [2022-11-18 20:34:17,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359988631] [2022-11-18 20:34:17,302 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:34:17,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:34:17,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:34:17,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:34:17,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:34:17,303 INFO L87 Difference]: Start difference. First operand 568 states and 772 transitions. Second operand has 9 states, 8 states have (on average 7.5) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:17,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:17,627 INFO L93 Difference]: Finished difference Result 648 states and 850 transitions. [2022-11-18 20:34:17,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:34:17,627 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 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 51 [2022-11-18 20:34:17,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:17,629 INFO L225 Difference]: With dead ends: 648 [2022-11-18 20:34:17,629 INFO L226 Difference]: Without dead ends: 648 [2022-11-18 20:34:17,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:34:17,630 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:17,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 86 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 35 Unchecked, 0.0s Time] [2022-11-18 20:34:17,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2022-11-18 20:34:17,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 489. [2022-11-18 20:34:17,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 484 states have (on average 1.3429752066115703) internal successors, (650), 488 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:17,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 650 transitions. [2022-11-18 20:34:17,642 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 650 transitions. Word has length 51 [2022-11-18 20:34:17,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:17,643 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 650 transitions. [2022-11-18 20:34:17,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:17,643 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 650 transitions. [2022-11-18 20:34:17,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-18 20:34:17,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:17,644 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:17,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:34:17,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:34:17,859 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:34:17,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:17,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1580560235, now seen corresponding path program 3 times [2022-11-18 20:34:17,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:34:17,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760406403] [2022-11-18 20:34:17,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:34:17,860 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 20:34:17,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:34:17,861 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:34:17,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:34:18,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 20:34:18,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:34:18,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:34:18,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:18,026 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 20:34:19,061 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-18 20:34:19,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:34:19,061 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:34:19,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760406403] [2022-11-18 20:34:19,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760406403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:19,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:19,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:34:19,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836232067] [2022-11-18 20:34:19,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:19,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:34:19,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:34:19,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:34:19,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:34:19,064 INFO L87 Difference]: Start difference. First operand 489 states and 650 transitions. Second operand has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 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 20:34:19,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:19,115 INFO L93 Difference]: Finished difference Result 580 states and 762 transitions. [2022-11-18 20:34:19,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:34:19,116 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 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 52 [2022-11-18 20:34:19,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:19,118 INFO L225 Difference]: With dead ends: 580 [2022-11-18 20:34:19,118 INFO L226 Difference]: Without dead ends: 580 [2022-11-18 20:34:19,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:34:19,119 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 4 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:19,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 53 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 25 Unchecked, 0.0s Time] [2022-11-18 20:34:19,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2022-11-18 20:34:19,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 329. [2022-11-18 20:34:19,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 324 states have (on average 1.3055555555555556) internal successors, (423), 328 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:19,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 423 transitions. [2022-11-18 20:34:19,129 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 423 transitions. Word has length 52 [2022-11-18 20:34:19,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:19,129 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 423 transitions. [2022-11-18 20:34:19,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 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 20:34:19,130 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 423 transitions. [2022-11-18 20:34:19,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-18 20:34:19,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:19,131 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:19,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:34:19,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:34:19,346 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:34:19,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:19,346 INFO L85 PathProgramCache]: Analyzing trace with hash 558307894, now seen corresponding path program 3 times [2022-11-18 20:34:19,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:34:19,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1093901616] [2022-11-18 20:34:19,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:34:19,347 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 20:34:19,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:34:19,348 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:34:19,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:34:19,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 20:34:19,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:34:19,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 20:34:19,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:19,762 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 20:34:21,074 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 19 proven. 56 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 20:34:21,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:34:25,993 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 20:34:25,994 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:34:25,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1093901616] [2022-11-18 20:34:25,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1093901616] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:34:25,994 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:34:25,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 28 [2022-11-18 20:34:25,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082019239] [2022-11-18 20:34:25,994 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:34:25,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 20:34:25,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:34:25,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 20:34:25,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2022-11-18 20:34:25,995 INFO L87 Difference]: Start difference. First operand 329 states and 423 transitions. Second operand has 28 states, 28 states have (on average 3.5) internal successors, (98), 28 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:31,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:31,069 INFO L93 Difference]: Finished difference Result 432 states and 557 transitions. [2022-11-18 20:34:31,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 20:34:31,070 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.5) internal successors, (98), 28 states have internal predecessors, (98), 0 states have call successors, (0), 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 55 [2022-11-18 20:34:31,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:31,071 INFO L225 Difference]: With dead ends: 432 [2022-11-18 20:34:31,071 INFO L226 Difference]: Without dead ends: 430 [2022-11-18 20:34:31,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=176, Invalid=1306, Unknown=0, NotChecked=0, Total=1482 [2022-11-18 20:34:31,073 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 76 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 226 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:31,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 314 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 323 Invalid, 0 Unknown, 226 Unchecked, 1.6s Time] [2022-11-18 20:34:31,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-11-18 20:34:31,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 414. [2022-11-18 20:34:31,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 409 states have (on average 1.3105134474327629) internal successors, (536), 413 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:31,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 536 transitions. [2022-11-18 20:34:31,082 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 536 transitions. Word has length 55 [2022-11-18 20:34:31,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:31,082 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 536 transitions. [2022-11-18 20:34:31,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.5) internal successors, (98), 28 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:31,083 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 536 transitions. [2022-11-18 20:34:31,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-18 20:34:31,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:31,084 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:31,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:34:31,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:34:31,304 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:34:31,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:31,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1238366264, now seen corresponding path program 1 times [2022-11-18 20:34:31,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:34:31,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091518204] [2022-11-18 20:34:31,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:31,305 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 20:34:31,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:34:31,306 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:34:31,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:34:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:31,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:34:31,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:31,543 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 20:34:32,577 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 36 proven. 34 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 20:34:32,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:34:36,801 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 20:34:36,801 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:34:36,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091518204] [2022-11-18 20:34:36,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1091518204] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:34:36,802 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:34:36,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2022-11-18 20:34:36,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179914885] [2022-11-18 20:34:36,803 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:34:36,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 20:34:36,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:34:36,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 20:34:36,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2022-11-18 20:34:36,804 INFO L87 Difference]: Start difference. First operand 414 states and 536 transitions. Second operand has 25 states, 25 states have (on average 3.8) internal successors, (95), 25 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:40,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:40,088 INFO L93 Difference]: Finished difference Result 380 states and 486 transitions. [2022-11-18 20:34:40,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 20:34:40,090 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.8) internal successors, (95), 25 states have internal predecessors, (95), 0 states have call successors, (0), 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 55 [2022-11-18 20:34:40,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:40,091 INFO L225 Difference]: With dead ends: 380 [2022-11-18 20:34:40,091 INFO L226 Difference]: Without dead ends: 379 [2022-11-18 20:34:40,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=114, Invalid=698, Unknown=0, NotChecked=0, Total=812 [2022-11-18 20:34:40,092 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 70 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:40,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 221 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 308 Invalid, 0 Unknown, 114 Unchecked, 2.5s Time] [2022-11-18 20:34:40,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-11-18 20:34:40,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 367. [2022-11-18 20:34:40,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 362 states have (on average 1.298342541436464) internal successors, (470), 366 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:40,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 470 transitions. [2022-11-18 20:34:40,098 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 470 transitions. Word has length 55 [2022-11-18 20:34:40,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:40,099 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 470 transitions. [2022-11-18 20:34:40,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.8) internal successors, (95), 25 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:40,099 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 470 transitions. [2022-11-18 20:34:40,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-18 20:34:40,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:40,101 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:40,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:34:40,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:34:40,323 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:34:40,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:40,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1694913281, now seen corresponding path program 3 times [2022-11-18 20:34:40,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:34:40,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146410866] [2022-11-18 20:34:40,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:34:40,325 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 20:34:40,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:34:40,326 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:34:40,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:34:40,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 20:34:40,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:34:40,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:34:40,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:40,868 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-18 20:34:40,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:34:40,868 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:34:40,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146410866] [2022-11-18 20:34:40,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146410866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:40,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:40,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:34:40,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364886438] [2022-11-18 20:34:40,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:40,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:34:40,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:34:40,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:34:40,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:34:40,870 INFO L87 Difference]: Start difference. First operand 367 states and 470 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 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 20:34:41,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:41,037 INFO L93 Difference]: Finished difference Result 364 states and 457 transitions. [2022-11-18 20:34:41,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:34:41,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 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 58 [2022-11-18 20:34:41,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:41,041 INFO L225 Difference]: With dead ends: 364 [2022-11-18 20:34:41,041 INFO L226 Difference]: Without dead ends: 364 [2022-11-18 20:34:41,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:34:41,042 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 36 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:41,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 44 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:34:41,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-11-18 20:34:41,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 363. [2022-11-18 20:34:41,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 359 states have (on average 1.2729805013927578) internal successors, (457), 362 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:41,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 457 transitions. [2022-11-18 20:34:41,050 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 457 transitions. Word has length 58 [2022-11-18 20:34:41,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:41,050 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 457 transitions. [2022-11-18 20:34:41,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 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 20:34:41,051 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 457 transitions. [2022-11-18 20:34:41,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-18 20:34:41,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:41,052 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:41,067 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Ended with exit code 0 [2022-11-18 20:34:41,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:34:41,265 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:34:41,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:41,266 INFO L85 PathProgramCache]: Analyzing trace with hash -314334381, now seen corresponding path program 4 times [2022-11-18 20:34:41,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:34:41,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397150718] [2022-11-18 20:34:41,267 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:34:41,267 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 20:34:41,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:34:41,269 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:34:41,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:34:41,544 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:34:41,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:34:41,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 20:34:41,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:41,573 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 20:34:42,759 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 36 proven. 26 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-18 20:34:42,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:34:47,658 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 20:34:47,659 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:34:47,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397150718] [2022-11-18 20:34:47,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1397150718] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:34:47,659 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:34:47,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2022-11-18 20:34:47,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136259163] [2022-11-18 20:34:47,660 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:34:47,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 20:34:47,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:34:47,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 20:34:47,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2022-11-18 20:34:47,662 INFO L87 Difference]: Start difference. First operand 363 states and 457 transitions. Second operand has 25 states, 25 states have (on average 3.52) internal successors, (88), 25 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:56,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:56,938 INFO L93 Difference]: Finished difference Result 343 states and 427 transitions. [2022-11-18 20:34:56,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:34:56,938 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.52) internal successors, (88), 25 states have internal predecessors, (88), 0 states have call successors, (0), 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 59 [2022-11-18 20:34:56,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:56,939 INFO L225 Difference]: With dead ends: 343 [2022-11-18 20:34:56,939 INFO L226 Difference]: Without dead ends: 342 [2022-11-18 20:34:56,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 93 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=282, Invalid=1610, Unknown=0, NotChecked=0, Total=1892 [2022-11-18 20:34:56,940 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 204 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:56,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 178 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 507 Invalid, 0 Unknown, 18 Unchecked, 3.3s Time] [2022-11-18 20:34:56,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-11-18 20:34:56,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 299. [2022-11-18 20:34:56,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 295 states have (on average 1.2779661016949153) internal successors, (377), 298 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:56,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 377 transitions. [2022-11-18 20:34:56,947 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 377 transitions. Word has length 59 [2022-11-18 20:34:56,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:56,947 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 377 transitions. [2022-11-18 20:34:56,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.52) internal successors, (88), 25 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:56,948 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 377 transitions. [2022-11-18 20:34:56,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-18 20:34:56,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:56,949 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:56,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:34:57,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:34:57,163 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:34:57,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:57,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1970979329, now seen corresponding path program 5 times [2022-11-18 20:34:57,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:34:57,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2011149903] [2022-11-18 20:34:57,164 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:34:57,164 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 20:34:57,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:34:57,165 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:34:57,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:34:58,149 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-18 20:34:58,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:34:58,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 20:34:58,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:58,183 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 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 20:34:59,965 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 5 proven. 62 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 20:34:59,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:05,897 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 1 proven. 66 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 20:35:05,897 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:35:05,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2011149903] [2022-11-18 20:35:05,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2011149903] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:05,898 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:35:05,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 29 [2022-11-18 20:35:05,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772159695] [2022-11-18 20:35:05,898 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:05,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 20:35:05,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:35:05,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 20:35:05,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=608, Unknown=0, NotChecked=0, Total=812 [2022-11-18 20:35:05,900 INFO L87 Difference]: Start difference. First operand 299 states and 377 transitions. Second operand has 29 states, 29 states have (on average 3.1724137931034484) internal successors, (92), 29 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:43,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:43,469 INFO L93 Difference]: Finished difference Result 479 states and 581 transitions. [2022-11-18 20:35:43,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-18 20:35:43,472 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.1724137931034484) internal successors, (92), 29 states have internal predecessors, (92), 0 states have call successors, (0), 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 59 [2022-11-18 20:35:43,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:43,473 INFO L225 Difference]: With dead ends: 479 [2022-11-18 20:35:43,473 INFO L226 Difference]: Without dead ends: 479 [2022-11-18 20:35:43,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2594 ImplicationChecksByTransitivity, 34.7s TimeCoverageRelationStatistics Valid=1822, Invalid=5488, Unknown=0, NotChecked=0, Total=7310 [2022-11-18 20:35:43,474 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 1210 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1210 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:43,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1210 Valid, 185 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-11-18 20:35:43,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-11-18 20:35:43,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 409. [2022-11-18 20:35:43,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 405 states have (on average 1.2790123456790123) internal successors, (518), 408 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:43,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 518 transitions. [2022-11-18 20:35:43,483 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 518 transitions. Word has length 59 [2022-11-18 20:35:43,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:43,483 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 518 transitions. [2022-11-18 20:35:43,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.1724137931034484) internal successors, (92), 29 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:43,484 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 518 transitions. [2022-11-18 20:35:43,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 20:35:43,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:43,485 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 1, 1, 1, 1, 1] [2022-11-18 20:35:43,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:35:43,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:43,699 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:35:43,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:43,699 INFO L85 PathProgramCache]: Analyzing trace with hash 58542645, now seen corresponding path program 4 times [2022-11-18 20:35:43,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:35:43,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773472853] [2022-11-18 20:35:43,700 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:35:43,700 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 20:35:43,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:35:43,701 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:35:43,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:35:43,886 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:35:43,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:35:43,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 20:35:43,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:43,918 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 20:35:46,277 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:46,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:57,620 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:57,620 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:35:57,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773472853] [2022-11-18 20:35:57,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1773472853] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:57,621 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:35:57,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2022-11-18 20:35:57,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112003004] [2022-11-18 20:35:57,621 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:57,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-18 20:35:57,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:35:57,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-18 20:35:57,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=545, Invalid=1525, Unknown=0, NotChecked=0, Total=2070 [2022-11-18 20:35:57,624 INFO L87 Difference]: Start difference. First operand 409 states and 518 transitions. Second operand has 46 states, 45 states have (on average 2.888888888888889) internal successors, (130), 46 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:12,631 WARN L233 SmtUtils]: Spent 8.82s on a formula simplification that was a NOOP. DAG size: 171 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:36:15,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:36:17,536 WARN L539 Checker$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 20:36:19,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:36:28,533 WARN L233 SmtUtils]: Spent 8.21s on a formula simplification that was a NOOP. DAG size: 168 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:36:45,865 WARN L233 SmtUtils]: Spent 16.34s on a formula simplification. DAG size of input: 163 DAG size of output: 163 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:36:47,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:36:49,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:36:51,771 WARN L539 Checker$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 20:36:53,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:37:02,507 WARN L233 SmtUtils]: Spent 7.86s on a formula simplification that was a NOOP. DAG size: 157 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:37:18,770 WARN L233 SmtUtils]: Spent 15.30s on a formula simplification. DAG size of input: 152 DAG size of output: 152 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:37:21,630 WARN L539 Checker$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 20:37:23,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:37:25,638 WARN L539 Checker$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 20:37:31,547 WARN L233 SmtUtils]: Spent 5.08s 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) [2022-11-18 20:37:42,291 WARN L233 SmtUtils]: Spent 9.61s on a formula simplification. DAG size of input: 141 DAG size of output: 141 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:37:44,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:37:46,839 WARN L539 Checker$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 20:37:48,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:38:02,756 WARN L233 SmtUtils]: Spent 8.35s on a formula simplification. DAG size of input: 131 DAG size of output: 131 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:38:05,492 WARN L539 Checker$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 20:38:07,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:38:09,499 WARN L539 Checker$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 20:38:23,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:38:25,400 WARN L539 Checker$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 20:38:27,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:38:54,073 WARN L539 Checker$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 20:38:56,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:39:12,330 WARN L539 Checker$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 20:39:18,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:18,477 INFO L93 Difference]: Finished difference Result 8577 states and 11038 transitions. [2022-11-18 20:39:18,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-11-18 20:39:18,479 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.888888888888889) internal successors, (130), 46 states have internal predecessors, (130), 0 states have call successors, (0), 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 66 [2022-11-18 20:39:18,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:18,492 INFO L225 Difference]: With dead ends: 8577 [2022-11-18 20:39:18,492 INFO L226 Difference]: Without dead ends: 8577 [2022-11-18 20:39:18,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2441 ImplicationChecksByTransitivity, 147.7s TimeCoverageRelationStatistics Valid=2223, Invalid=5259, Unknown=0, NotChecked=0, Total=7482 [2022-11-18 20:39:18,494 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 5818 mSDsluCounter, 2737 mSDsCounter, 0 mSdLazyCounter, 3941 mSolverCounterSat, 143 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5818 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 4301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 3941 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 196 IncrementalHoareTripleChecker+Unchecked, 61.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:18,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5818 Valid, 2873 Invalid, 4301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 3941 Invalid, 21 Unknown, 196 Unchecked, 61.7s Time] [2022-11-18 20:39:18,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8577 states. [2022-11-18 20:39:18,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8577 to 473. [2022-11-18 20:39:18,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 469 states have (on average 1.275053304904051) internal successors, (598), 472 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:18,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 598 transitions. [2022-11-18 20:39:18,563 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 598 transitions. Word has length 66 [2022-11-18 20:39:18,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:18,563 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 598 transitions. [2022-11-18 20:39:18,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.888888888888889) internal successors, (130), 46 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:18,563 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 598 transitions. [2022-11-18 20:39:18,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-18 20:39:18,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:18,564 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:18,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Ended with exit code 0 [2022-11-18 20:39:18,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:39:18,781 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:39:18,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:18,781 INFO L85 PathProgramCache]: Analyzing trace with hash 800674021, now seen corresponding path program 4 times [2022-11-18 20:39:18,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:39:18,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589000634] [2022-11-18 20:39:18,782 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:39:18,782 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 20:39:18,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:39:18,783 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:39:18,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:39:19,046 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:39:19,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:39:19,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:39:19,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:19,076 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 20:39:20,593 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 20:39:20,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:39:22,750 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 1 proven. 78 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 20:39:22,750 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:39:22,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589000634] [2022-11-18 20:39:22,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589000634] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:39:22,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:39:22,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2022-11-18 20:39:22,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844198061] [2022-11-18 20:39:22,751 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:39:22,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:39:22,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:39:22,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:39:22,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:39:22,752 INFO L87 Difference]: Start difference. First operand 473 states and 598 transitions. Second operand has 19 states, 18 states have (on average 6.111111111111111) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:29,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:29,394 INFO L93 Difference]: Finished difference Result 664 states and 847 transitions. [2022-11-18 20:39:29,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:39:29,395 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 6.111111111111111) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 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 69 [2022-11-18 20:39:29,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:29,398 INFO L225 Difference]: With dead ends: 664 [2022-11-18 20:39:29,398 INFO L226 Difference]: Without dead ends: 664 [2022-11-18 20:39:29,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 121 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=287, Invalid=1273, Unknown=0, NotChecked=0, Total=1560 [2022-11-18 20:39:29,399 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 117 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:29,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 275 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 63 Unchecked, 0.3s Time] [2022-11-18 20:39:29,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2022-11-18 20:39:29,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 661. [2022-11-18 20:39:29,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 657 states have (on average 1.2891933028919331) internal successors, (847), 660 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:29,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 847 transitions. [2022-11-18 20:39:29,405 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 847 transitions. Word has length 69 [2022-11-18 20:39:29,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:29,405 INFO L495 AbstractCegarLoop]: Abstraction has 661 states and 847 transitions. [2022-11-18 20:39:29,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 6.111111111111111) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:29,406 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 847 transitions. [2022-11-18 20:39:29,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-18 20:39:29,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:29,407 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:29,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 20:39:29,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:39:29,607 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:39:29,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:29,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1646672528, now seen corresponding path program 6 times [2022-11-18 20:39:29,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:39:29,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090575704] [2022-11-18 20:39:29,608 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:39:29,608 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 20:39:29,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:39:29,609 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:39:29,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:39:30,208 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-18 20:39:30,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:39:30,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-18 20:39:30,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:30,244 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 20:39:32,034 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-18 20:39:32,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:39:38,133 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-18 20:39:38,133 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:39:38,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090575704] [2022-11-18 20:39:38,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090575704] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:39:38,134 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:39:38,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2022-11-18 20:39:38,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888820372] [2022-11-18 20:39:38,134 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:39:38,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 20:39:38,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:39:38,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 20:39:38,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2022-11-18 20:39:38,136 INFO L87 Difference]: Start difference. First operand 661 states and 847 transitions. Second operand has 32 states, 31 states have (on average 3.6129032258064515) internal successors, (112), 32 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:09,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:40:09,366 INFO L93 Difference]: Finished difference Result 980 states and 1220 transitions. [2022-11-18 20:40:09,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-18 20:40:09,369 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.6129032258064515) internal successors, (112), 32 states have internal predecessors, (112), 0 states have call successors, (0), 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 73 [2022-11-18 20:40:09,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:40:09,372 INFO L225 Difference]: With dead ends: 980 [2022-11-18 20:40:09,373 INFO L226 Difference]: Without dead ends: 980 [2022-11-18 20:40:09,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2582 ImplicationChecksByTransitivity, 27.4s TimeCoverageRelationStatistics Valid=2121, Invalid=6251, Unknown=0, NotChecked=0, Total=8372 [2022-11-18 20:40:09,375 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 950 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:40:09,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 311 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1213 Invalid, 0 Unknown, 77 Unchecked, 8.0s Time] [2022-11-18 20:40:09,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2022-11-18 20:40:09,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 816. [2022-11-18 20:40:09,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 812 states have (on average 1.2943349753694582) internal successors, (1051), 815 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:09,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1051 transitions. [2022-11-18 20:40:09,389 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1051 transitions. Word has length 73 [2022-11-18 20:40:09,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:40:09,389 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1051 transitions. [2022-11-18 20:40:09,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.6129032258064515) internal successors, (112), 32 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:09,390 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1051 transitions. [2022-11-18 20:40:09,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-18 20:40:09,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:40:09,391 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:09,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:40:09,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:40:09,610 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:40:09,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:09,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1283272503, now seen corresponding path program 7 times [2022-11-18 20:40:09,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:40:09,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1818964719] [2022-11-18 20:40:09,611 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:40:09,611 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 20:40:09,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:40:09,612 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:40:09,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:40:09,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:09,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:40:09,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:09,972 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 20:40:11,801 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 20:40:11,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:40:16,757 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 9 proven. 96 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 20:40:16,757 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:40:16,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1818964719] [2022-11-18 20:40:16,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1818964719] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:40:16,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:40:16,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2022-11-18 20:40:16,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430800997] [2022-11-18 20:40:16,757 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:40:16,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 20:40:16,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:40:16,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 20:40:16,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2022-11-18 20:40:16,758 INFO L87 Difference]: Start difference. First operand 816 states and 1051 transitions. Second operand has 26 states, 25 states have (on average 4.4) internal successors, (110), 26 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:34,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:40:34,030 INFO L93 Difference]: Finished difference Result 1063 states and 1358 transitions. [2022-11-18 20:40:34,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-18 20:40:34,032 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.4) internal successors, (110), 26 states have internal predecessors, (110), 0 states have call successors, (0), 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 73 [2022-11-18 20:40:34,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:40:34,035 INFO L225 Difference]: With dead ends: 1063 [2022-11-18 20:40:34,035 INFO L226 Difference]: Without dead ends: 1063 [2022-11-18 20:40:34,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1045 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=997, Invalid=2909, Unknown=0, NotChecked=0, Total=3906 [2022-11-18 20:40:34,036 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 990 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:40:34,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [990 Valid, 167 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 596 Invalid, 0 Unknown, 53 Unchecked, 4.4s Time] [2022-11-18 20:40:34,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2022-11-18 20:40:34,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 940. [2022-11-18 20:40:34,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 936 states have (on average 1.2884615384615385) internal successors, (1206), 939 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:34,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1206 transitions. [2022-11-18 20:40:34,048 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1206 transitions. Word has length 73 [2022-11-18 20:40:34,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:40:34,049 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1206 transitions. [2022-11-18 20:40:34,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.4) internal successors, (110), 26 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:34,049 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1206 transitions. [2022-11-18 20:40:34,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-18 20:40:34,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:40:34,057 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:34,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Ended with exit code 0 [2022-11-18 20:40:34,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:40:34,275 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:40:34,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:34,276 INFO L85 PathProgramCache]: Analyzing trace with hash 522756636, now seen corresponding path program 4 times [2022-11-18 20:40:34,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:40:34,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045864753] [2022-11-18 20:40:34,276 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:40:34,277 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 20:40:34,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:40:34,278 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:40:34,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:40:34,635 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:40:34,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:40:34,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:40:34,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:34,668 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 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 20:40:37,125 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:40:37,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:40:39,286 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 1 proven. 96 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:40:39,287 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:40:39,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045864753] [2022-11-18 20:40:39,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045864753] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:40:39,287 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:40:39,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2022-11-18 20:40:39,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522324382] [2022-11-18 20:40:39,287 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:40:39,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 20:40:39,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:40:39,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 20:40:39,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:40:39,288 INFO L87 Difference]: Start difference. First operand 940 states and 1206 transitions. Second operand has 17 states, 16 states have (on average 7.375) internal successors, (118), 17 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:46,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:40:46,797 INFO L93 Difference]: Finished difference Result 973 states and 1237 transitions. [2022-11-18 20:40:46,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:40:46,799 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 7.375) internal successors, (118), 17 states have internal predecessors, (118), 0 states have call successors, (0), 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 73 [2022-11-18 20:40:46,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:40:46,801 INFO L225 Difference]: With dead ends: 973 [2022-11-18 20:40:46,801 INFO L226 Difference]: Without dead ends: 973 [2022-11-18 20:40:46,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 137 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=308, Invalid=1098, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 20:40:46,802 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 100 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:40:46,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 265 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 74 Unchecked, 0.4s Time] [2022-11-18 20:40:46,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2022-11-18 20:40:46,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 958. [2022-11-18 20:40:46,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 954 states have (on average 1.278825995807128) internal successors, (1220), 957 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:46,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1220 transitions. [2022-11-18 20:40:46,812 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1220 transitions. Word has length 73 [2022-11-18 20:40:46,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:40:46,813 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 1220 transitions. [2022-11-18 20:40:46,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 7.375) internal successors, (118), 17 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:46,813 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1220 transitions. [2022-11-18 20:40:46,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-18 20:40:46,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:40:46,814 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:46,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Ended with exit code 0 [2022-11-18 20:40:47,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:40:47,018 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:40:47,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:47,018 INFO L85 PathProgramCache]: Analyzing trace with hash 998204406, now seen corresponding path program 8 times [2022-11-18 20:40:47,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:40:47,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279384602] [2022-11-18 20:40:47,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:40:47,019 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 20:40:47,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:40:47,020 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:40:47,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:40:47,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:40:47,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:40:47,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:40:47,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:47,383 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 20:40:48,755 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 61 proven. 47 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 20:40:48,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:40:53,674 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 3 proven. 108 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 20:40:53,674 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:40:53,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279384602] [2022-11-18 20:40:53,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279384602] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:40:53,675 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:40:53,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2022-11-18 20:40:53,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607660535] [2022-11-18 20:40:53,675 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:40:53,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 20:40:53,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:40:53,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 20:40:53,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2022-11-18 20:40:53,677 INFO L87 Difference]: Start difference. First operand 958 states and 1220 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:55,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:40:55,086 INFO L93 Difference]: Finished difference Result 982 states and 1244 transitions. [2022-11-18 20:40:55,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:40:55,088 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 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 73 [2022-11-18 20:40:55,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:40:55,090 INFO L225 Difference]: With dead ends: 982 [2022-11-18 20:40:55,090 INFO L226 Difference]: Without dead ends: 945 [2022-11-18 20:40:55,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2022-11-18 20:40:55,091 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 58 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:40:55,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 331 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 224 Invalid, 0 Unknown, 64 Unchecked, 1.0s Time] [2022-11-18 20:40:55,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2022-11-18 20:40:55,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 945. [2022-11-18 20:40:55,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 941 states have (on average 1.2794899043570669) internal successors, (1204), 944 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:55,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1204 transitions. [2022-11-18 20:40:55,100 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1204 transitions. Word has length 73 [2022-11-18 20:40:55,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:40:55,101 INFO L495 AbstractCegarLoop]: Abstraction has 945 states and 1204 transitions. [2022-11-18 20:40:55,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:55,101 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1204 transitions. [2022-11-18 20:40:55,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-18 20:40:55,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:40:55,102 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:55,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:40:55,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:40:55,306 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:40:55,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:55,306 INFO L85 PathProgramCache]: Analyzing trace with hash -82264109, now seen corresponding path program 9 times [2022-11-18 20:40:55,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:40:55,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1742645828] [2022-11-18 20:40:55,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:40:55,307 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 20:40:55,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:40:55,308 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:40:55,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:40:55,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-18 20:40:55,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:40:55,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-18 20:40:55,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:55,952 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 20:41:00,694 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 61 proven. 43 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-18 20:41:00,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:41:21,270 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-18 20:41:21,270 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:41:21,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1742645828] [2022-11-18 20:41:21,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1742645828] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:41:21,270 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:41:21,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 46 [2022-11-18 20:41:21,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637770562] [2022-11-18 20:41:21,271 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:41:21,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-18 20:41:21,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:41:21,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-18 20:41:21,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=1798, Unknown=0, NotChecked=0, Total=2162 [2022-11-18 20:41:21,272 INFO L87 Difference]: Start difference. First operand 945 states and 1204 transitions. Second operand has 47 states, 46 states have (on average 2.4782608695652173) internal successors, (114), 47 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:30,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:42:30,657 INFO L93 Difference]: Finished difference Result 3117 states and 3881 transitions. [2022-11-18 20:42:30,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-11-18 20:42:30,658 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.4782608695652173) internal successors, (114), 47 states have internal predecessors, (114), 0 states have call successors, (0), 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 77 [2022-11-18 20:42:30,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:42:30,668 INFO L225 Difference]: With dead ends: 3117 [2022-11-18 20:42:30,668 INFO L226 Difference]: Without dead ends: 3117 [2022-11-18 20:42:30,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 109 SyntacticMatches, 2 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3102 ImplicationChecksByTransitivity, 79.0s TimeCoverageRelationStatistics Valid=2618, Invalid=8302, Unknown=0, NotChecked=0, Total=10920 [2022-11-18 20:42:30,670 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 933 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 1956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 849 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:42:30,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 341 Invalid, 1956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1015 Invalid, 0 Unknown, 849 Unchecked, 5.0s Time] [2022-11-18 20:42:30,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3117 states. [2022-11-18 20:42:30,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3117 to 2414. [2022-11-18 20:42:30,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2414 states, 2410 states have (on average 1.291286307053942) internal successors, (3112), 2413 states have internal predecessors, (3112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:30,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2414 states to 2414 states and 3112 transitions. [2022-11-18 20:42:30,703 INFO L78 Accepts]: Start accepts. Automaton has 2414 states and 3112 transitions. Word has length 77 [2022-11-18 20:42:30,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:42:30,703 INFO L495 AbstractCegarLoop]: Abstraction has 2414 states and 3112 transitions. [2022-11-18 20:42:30,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.4782608695652173) internal successors, (114), 47 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:30,703 INFO L276 IsEmpty]: Start isEmpty. Operand 2414 states and 3112 transitions. [2022-11-18 20:42:30,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-18 20:42:30,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:42:30,705 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:42:30,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:42:30,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:42:30,919 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:42:30,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:42:30,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1228904997, now seen corresponding path program 10 times [2022-11-18 20:42:30,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:42:30,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086151938] [2022-11-18 20:42:30,920 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:42:30,920 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 20:42:30,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:42:30,921 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:42:30,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:42:31,363 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:42:31,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:42:31,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 20:42:31,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:42:31,405 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 20:42:33,006 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 58 proven. 103 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 20:42:33,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:42:40,142 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 20:42:40,142 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:42:40,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086151938] [2022-11-18 20:42:40,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086151938] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:42:40,142 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:42:40,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 33 [2022-11-18 20:42:40,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20051332] [2022-11-18 20:42:40,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:42:40,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-18 20:42:40,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:42:40,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-18 20:42:40,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=926, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 20:42:40,144 INFO L87 Difference]: Start difference. First operand 2414 states and 3112 transitions. Second operand has 33 states, 33 states have (on average 4.242424242424242) internal successors, (140), 33 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:51,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:42:51,032 INFO L93 Difference]: Finished difference Result 2680 states and 3439 transitions. [2022-11-18 20:42:51,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-18 20:42:51,034 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.242424242424242) internal successors, (140), 33 states have internal predecessors, (140), 0 states have call successors, (0), 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 78 [2022-11-18 20:42:51,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:42:51,040 INFO L225 Difference]: With dead ends: 2680 [2022-11-18 20:42:51,040 INFO L226 Difference]: Without dead ends: 2674 [2022-11-18 20:42:51,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=295, Invalid=2357, Unknown=0, NotChecked=0, Total=2652 [2022-11-18 20:42:51,041 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 107 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 206 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:42:51,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 429 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 619 Invalid, 0 Unknown, 206 Unchecked, 4.4s Time] [2022-11-18 20:42:51,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2022-11-18 20:42:51,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2596. [2022-11-18 20:42:51,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2596 states, 2592 states have (on average 1.2943672839506173) internal successors, (3355), 2595 states have internal predecessors, (3355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:51,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2596 states to 2596 states and 3355 transitions. [2022-11-18 20:42:51,076 INFO L78 Accepts]: Start accepts. Automaton has 2596 states and 3355 transitions. Word has length 78 [2022-11-18 20:42:51,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:42:51,076 INFO L495 AbstractCegarLoop]: Abstraction has 2596 states and 3355 transitions. [2022-11-18 20:42:51,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.242424242424242) internal successors, (140), 33 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:51,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2596 states and 3355 transitions. [2022-11-18 20:42:51,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-18 20:42:51,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:42:51,078 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:42:51,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:42:51,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:42:51,294 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:42:51,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:42:51,294 INFO L85 PathProgramCache]: Analyzing trace with hash 755381862, now seen corresponding path program 7 times [2022-11-18 20:42:51,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:42:51,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1924837183] [2022-11-18 20:42:51,295 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:42:51,295 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 20:42:51,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:42:51,296 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:42:51,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:42:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:51,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-18 20:42:51,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:42:51,610 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 20:42:52,999 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 128 proven. 132 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 20:42:53,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:43:01,196 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:43:01,196 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:43:01,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1924837183] [2022-11-18 20:43:01,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1924837183] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:43:01,197 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:43:01,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22] total 39 [2022-11-18 20:43:01,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183164554] [2022-11-18 20:43:01,197 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:43:01,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-18 20:43:01,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:43:01,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-18 20:43:01,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1310, Unknown=0, NotChecked=0, Total=1482 [2022-11-18 20:43:01,198 INFO L87 Difference]: Start difference. First operand 2596 states and 3355 transitions. Second operand has 39 states, 39 states have (on average 3.641025641025641) internal successors, (142), 39 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:27,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:43:27,658 INFO L93 Difference]: Finished difference Result 2565 states and 3299 transitions. [2022-11-18 20:43:27,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-18 20:43:27,661 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.641025641025641) internal successors, (142), 39 states have internal predecessors, (142), 0 states have call successors, (0), 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 79 [2022-11-18 20:43:27,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:43:27,666 INFO L225 Difference]: With dead ends: 2565 [2022-11-18 20:43:27,666 INFO L226 Difference]: Without dead ends: 2564 [2022-11-18 20:43:27,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=511, Invalid=3911, Unknown=0, NotChecked=0, Total=4422 [2022-11-18 20:43:27,667 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 443 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 2175 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 2974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 771 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:43:27,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 1111 Invalid, 2974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2175 Invalid, 0 Unknown, 771 Unchecked, 14.8s Time] [2022-11-18 20:43:27,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2022-11-18 20:43:27,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 2503. [2022-11-18 20:43:27,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 2499 states have (on average 1.2925170068027212) internal successors, (3230), 2502 states have internal predecessors, (3230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:27,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 3230 transitions. [2022-11-18 20:43:27,697 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 3230 transitions. Word has length 79 [2022-11-18 20:43:27,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:43:27,698 INFO L495 AbstractCegarLoop]: Abstraction has 2503 states and 3230 transitions. [2022-11-18 20:43:27,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.641025641025641) internal successors, (142), 39 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:27,698 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 3230 transitions. [2022-11-18 20:43:27,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-18 20:43:27,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:43:27,699 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:43:27,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:43:27,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:43:27,911 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:43:27,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:43:27,911 INFO L85 PathProgramCache]: Analyzing trace with hash 834466354, now seen corresponding path program 2 times [2022-11-18 20:43:27,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:43:27,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905881860] [2022-11-18 20:43:27,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:43:27,912 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 20:43:27,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:43:27,913 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:43:27,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:43:28,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:43:28,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:43:28,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 20:43:28,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:43:28,247 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 20:43:32,355 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-18 20:43:32,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:43:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 7 proven. 93 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-18 20:43:35,417 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:43:35,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905881860] [2022-11-18 20:43:35,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1905881860] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:43:35,417 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:43:35,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2022-11-18 20:43:35,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068523203] [2022-11-18 20:43:35,417 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:43:35,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 20:43:35,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:43:35,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 20:43:35,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:43:35,419 INFO L87 Difference]: Start difference. First operand 2503 states and 3230 transitions. Second operand has 23 states, 22 states have (on average 5.363636363636363) internal successors, (118), 23 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:43,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:43:43,867 INFO L93 Difference]: Finished difference Result 3469 states and 4380 transitions. [2022-11-18 20:43:43,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-18 20:43:43,867 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.363636363636363) internal successors, (118), 23 states have internal predecessors, (118), 0 states have call successors, (0), 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 81 [2022-11-18 20:43:43,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:43:43,871 INFO L225 Difference]: With dead ends: 3469 [2022-11-18 20:43:43,872 INFO L226 Difference]: Without dead ends: 3469 [2022-11-18 20:43:43,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 157 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=479, Invalid=1971, Unknown=0, NotChecked=0, Total=2450 [2022-11-18 20:43:43,873 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 147 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:43:43,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 295 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 71 Invalid, 0 Unknown, 114 Unchecked, 2.6s Time] [2022-11-18 20:43:43,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3469 states. [2022-11-18 20:43:43,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3469 to 2857. [2022-11-18 20:43:43,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2857 states, 2853 states have (on average 1.2933753943217665) internal successors, (3690), 2856 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:43,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2857 states to 2857 states and 3690 transitions. [2022-11-18 20:43:43,910 INFO L78 Accepts]: Start accepts. Automaton has 2857 states and 3690 transitions. Word has length 81 [2022-11-18 20:43:43,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:43:43,911 INFO L495 AbstractCegarLoop]: Abstraction has 2857 states and 3690 transitions. [2022-11-18 20:43:43,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.363636363636363) internal successors, (118), 23 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:43,912 INFO L276 IsEmpty]: Start isEmpty. Operand 2857 states and 3690 transitions. [2022-11-18 20:43:43,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-18 20:43:43,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:43:43,913 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:43:43,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 20:43:44,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:43:44,128 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:43:44,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:43:44,128 INFO L85 PathProgramCache]: Analyzing trace with hash -492905327, now seen corresponding path program 11 times [2022-11-18 20:43:44,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:43:44,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541701245] [2022-11-18 20:43:44,129 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:43:44,129 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 20:43:44,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:43:44,130 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:43:44,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:43:44,492 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-18 20:43:44,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:43:44,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:43:44,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:43:44,872 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 106 proven. 3 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-18 20:43:44,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:43:45,459 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 106 proven. 3 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-18 20:43:45,459 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:43:45,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541701245] [2022-11-18 20:43:45,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1541701245] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:43:45,459 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:43:45,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-18 20:43:45,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483834461] [2022-11-18 20:43:45,460 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:43:45,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:43:45,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:43:45,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:43:45,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:43:45,461 INFO L87 Difference]: Start difference. First operand 2857 states and 3690 transitions. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:46,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:43:46,694 INFO L93 Difference]: Finished difference Result 1655 states and 2063 transitions. [2022-11-18 20:43:46,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:43:46,695 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 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 82 [2022-11-18 20:43:46,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:43:46,697 INFO L225 Difference]: With dead ends: 1655 [2022-11-18 20:43:46,698 INFO L226 Difference]: Without dead ends: 1442 [2022-11-18 20:43:46,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:43:46,698 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 66 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:43:46,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 199 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 20:43:46,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2022-11-18 20:43:46,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 1439. [2022-11-18 20:43:46,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1435 states have (on average 1.2529616724738677) internal successors, (1798), 1438 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:46,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 1798 transitions. [2022-11-18 20:43:46,725 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 1798 transitions. Word has length 82 [2022-11-18 20:43:46,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:43:46,725 INFO L495 AbstractCegarLoop]: Abstraction has 1439 states and 1798 transitions. [2022-11-18 20:43:46,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:46,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 1798 transitions. [2022-11-18 20:43:46,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-18 20:43:46,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:43:46,726 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:43:46,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 20:43:46,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:43:46,927 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-18 20:43:46,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:43:46,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1521122229, now seen corresponding path program 8 times [2022-11-18 20:43:46,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:43:46,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [387026910] [2022-11-18 20:43:46,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:43:46,928 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 20:43:46,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:43:46,929 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:43:46,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d51346-4591-4371-bcb7-b04b0e267225/bin/uautomizer-TMbwUNV5ro/mathsat -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 20:43:47,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:43:47,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:43:47,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-18 20:43:47,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:43:47,295 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 20:43:48,908 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 160 proven. 153 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-18 20:43:48,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:43:58,209 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:43:58,209 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:43:58,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [387026910] [2022-11-18 20:43:58,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [387026910] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:43:58,210 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:43:58,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 24] total 42 [2022-11-18 20:43:58,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717678694] [2022-11-18 20:43:58,210 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:43:58,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-18 20:43:58,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:43:58,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-18 20:43:58,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1541, Unknown=0, NotChecked=0, Total=1722 [2022-11-18 20:43:58,213 INFO L87 Difference]: Start difference. First operand 1439 states and 1798 transitions. Second operand has 42 states, 42 states have (on average 3.6904761904761907) internal successors, (155), 42 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)