./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN --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 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 --- 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-6b4ec56 [2022-11-20 12:41:57,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:41:57,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:41:57,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:41:57,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:41:57,891 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:41:57,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:41:57,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:41:57,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:41:57,910 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:41:57,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:41:57,916 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:41:57,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:41:57,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:41:57,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:41:57,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:41:57,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:41:57,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:41:57,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:41:57,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:41:57,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:41:57,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:41:57,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:41:57,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:41:57,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:41:57,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:41:57,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:41:57,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:41:57,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:41:57,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:41:57,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:41:57,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:41:57,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:41:57,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:41:57,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:41:57,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:41:57,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:41:57,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:41:57,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:41:57,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:41:57,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:41:57,974 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 12:41:58,024 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:41:58,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:41:58,029 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:41:58,029 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:41:58,030 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:41:58,030 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:41:58,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:41:58,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:41:58,034 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:41:58,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:41:58,035 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:41:58,036 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:41:58,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:41:58,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:41:58,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:41:58,037 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 12:41:58,037 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 12:41:58,037 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 12:41:58,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:41:58,038 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:41:58,038 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:41:58,038 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:41:58,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:41:58,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:41:58,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:41:58,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:41:58,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:41:58,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:41:58,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:41:58,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:41:58,042 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_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 [2022-11-20 12:41:58,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:41:58,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:41:58,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:41:58,380 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:41:58,380 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:41:58,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2022-11-20 12:42:02,278 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:42:02,630 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:42:02,631 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2022-11-20 12:42:02,640 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/data/b34d99bdf/23743319b7e14c5292c96a446484ac09/FLAGa185e64ce [2022-11-20 12:42:02,658 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/data/b34d99bdf/23743319b7e14c5292c96a446484ac09 [2022-11-20 12:42:02,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:42:02,663 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:42:02,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:42:02,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:42:02,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:42:02,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:42:02" (1/1) ... [2022-11-20 12:42:02,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b771ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:02, skipping insertion in model container [2022-11-20 12:42:02,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:42:02" (1/1) ... [2022-11-20 12:42:02,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:42:02,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:42:02,961 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-11-20 12:42:02,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:42:02,990 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) [2022-11-20 12:42:02,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4514faf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:02, skipping insertion in model container [2022-11-20 12:42:02,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:42:02,992 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-20 12:42:02,994 INFO L158 Benchmark]: Toolchain (without parser) took 330.12ms. Allocated memory is still 197.1MB. Free memory was 163.1MB in the beginning and 152.0MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 12:42:02,995 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 138.4MB. Free memory was 78.5MB in the beginning and 78.3MB in the end (delta: 134.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:42:02,995 INFO L158 Benchmark]: CACSL2BoogieTranslator took 326.90ms. Allocated memory is still 197.1MB. Free memory was 163.1MB in the beginning and 152.0MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 12:42:02,997 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 138.4MB. Free memory was 78.5MB in the beginning and 78.3MB in the end (delta: 134.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 326.90ms. Allocated memory is still 197.1MB. Free memory was 163.1MB in the beginning and 152.0MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 215]: 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN --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 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 --- 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-6b4ec56 [2022-11-20 12:42:05,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:42:05,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:42:05,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:42:05,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:42:05,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:42:05,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:42:05,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:42:05,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:42:05,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:42:05,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:42:05,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:42:05,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:42:05,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:42:05,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:42:05,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:42:05,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:42:05,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:42:05,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:42:05,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:42:05,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:42:05,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:42:05,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:42:05,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:42:05,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:42:05,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:42:05,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:42:05,928 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:42:05,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:42:05,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:42:05,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:42:05,936 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:42:05,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:42:05,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:42:05,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:42:05,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:42:05,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:42:05,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:42:05,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:42:05,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:42:05,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:42:05,946 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-20 12:42:06,002 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:42:06,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:42:06,003 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:42:06,003 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:42:06,004 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:42:06,004 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:42:06,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:42:06,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:42:06,006 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:42:06,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:42:06,006 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:42:06,006 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:42:06,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:42:06,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:42:06,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:42:06,007 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 12:42:06,008 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 12:42:06,008 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 12:42:06,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:42:06,008 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:42:06,008 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 12:42:06,009 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 12:42:06,009 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:42:06,009 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:42:06,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:42:06,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:42:06,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:42:06,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:42:06,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:42:06,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:42:06,013 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 12:42:06,014 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 12:42:06,014 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 12:42:06,014 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_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 [2022-11-20 12:42:06,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:42:06,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:42:06,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:42:06,541 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:42:06,542 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:42:06,545 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2022-11-20 12:42:10,523 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:42:10,880 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:42:10,880 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2022-11-20 12:42:10,890 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/data/a2f4fe01d/8d2e7a3c6d4147e889c5dd6b52998439/FLAGfb8c23768 [2022-11-20 12:42:10,919 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/data/a2f4fe01d/8d2e7a3c6d4147e889c5dd6b52998439 [2022-11-20 12:42:10,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:42:10,928 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:42:10,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:42:10,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:42:10,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:42:10,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:42:10" (1/1) ... [2022-11-20 12:42:10,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@690cd223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:10, skipping insertion in model container [2022-11-20 12:42:10,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:42:10" (1/1) ... [2022-11-20 12:42:10,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:42:11,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:42:11,300 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-11-20 12:42:11,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:42:11,363 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 12:42:11,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:42:11,429 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-11-20 12:42:11,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:42:11,456 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:42:11,563 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-11-20 12:42:11,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:42:11,598 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:42:11,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:11 WrapperNode [2022-11-20 12:42:11,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:42:11,601 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:42:11,601 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:42:11,601 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:42:11,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:11" (1/1) ... [2022-11-20 12:42:11,641 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:11" (1/1) ... [2022-11-20 12:42:11,707 INFO L138 Inliner]: procedures = 28, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 446 [2022-11-20 12:42:11,721 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:42:11,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:42:11,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:42:11,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:42:11,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:11" (1/1) ... [2022-11-20 12:42:11,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:11" (1/1) ... [2022-11-20 12:42:11,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:11" (1/1) ... [2022-11-20 12:42:11,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:11" (1/1) ... [2022-11-20 12:42:11,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:11" (1/1) ... [2022-11-20 12:42:11,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:11" (1/1) ... [2022-11-20 12:42:11,814 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:11" (1/1) ... [2022-11-20 12:42:11,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:11" (1/1) ... [2022-11-20 12:42:11,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:42:11,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:42:11,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:42:11,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:42:11,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:11" (1/1) ... [2022-11-20 12:42:11,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:42:11,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:42:11,881 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:42:11,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:42:11,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:42:11,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 12:42:11,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:42:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 12:42:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:42:11,948 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:42:11,955 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:42:11,956 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:42:11,956 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 12:42:11,956 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 12:42:11,957 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-20 12:42:11,958 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-20 12:42:11,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 12:42:11,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 12:42:11,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:42:11,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:42:11,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:42:11,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:42:11,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 12:42:11,963 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:42:12,262 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:42:12,264 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:42:13,862 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:42:14,322 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:42:14,322 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-20 12:42:14,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:42:14 BoogieIcfgContainer [2022-11-20 12:42:14,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:42:14,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:42:14,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:42:14,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:42:14,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:42:10" (1/3) ... [2022-11-20 12:42:14,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e732fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:42:14, skipping insertion in model container [2022-11-20 12:42:14,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:11" (2/3) ... [2022-11-20 12:42:14,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e732fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:42:14, skipping insertion in model container [2022-11-20 12:42:14,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:42:14" (3/3) ... [2022-11-20 12:42:14,359 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2022-11-20 12:42:14,385 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:42:14,385 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2022-11-20 12:42:14,386 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:42:14,588 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-20 12:42:14,659 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 12:42:14,706 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 370 places, 394 transitions, 820 flow [2022-11-20 12:42:14,712 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 370 places, 394 transitions, 820 flow [2022-11-20 12:42:14,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 370 places, 394 transitions, 820 flow [2022-11-20 12:42:14,958 INFO L130 PetriNetUnfolder]: 37/390 cut-off events. [2022-11-20 12:42:14,959 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 12:42:14,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 390 events. 37/390 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 457 event pairs, 0 based on Foata normal form. 0/303 useless extension candidates. Maximal degree in co-relation 331. Up to 8 conditions per place. [2022-11-20 12:42:14,981 INFO L119 LiptonReduction]: Number of co-enabled transitions 10000 [2022-11-20 12:43:36,860 WARN L233 SmtUtils]: Spent 7.92s on a formula simplification. DAG size of input: 165 DAG size of output: 162 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-20 12:43:46,735 WARN L233 SmtUtils]: Spent 7.23s on a formula simplification. DAG size of input: 168 DAG size of output: 165 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-20 12:43:52,027 WARN L233 SmtUtils]: Spent 5.29s on a formula simplification that was a NOOP. DAG size: 155 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-20 12:43:52,038 INFO L134 LiptonReduction]: Checked pairs total: 13340 [2022-11-20 12:43:52,038 INFO L136 LiptonReduction]: Total number of compositions: 464 [2022-11-20 12:43:52,048 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 87 transitions, 206 flow [2022-11-20 12:43:53,155 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 15555 states, 9553 states have (on average 7.390243902439025) internal successors, (70599), 15554 states have internal predecessors, (70599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:53,199 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:43:53,221 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;@21128ace, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:43:53,221 INFO L358 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2022-11-20 12:43:53,333 INFO L276 IsEmpty]: Start isEmpty. Operand has 15555 states, 9553 states have (on average 7.390243902439025) internal successors, (70599), 15554 states have internal predecessors, (70599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:53,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 12:43:53,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:53,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 12:43:53,360 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-20 12:43:53,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:53,369 INFO L85 PathProgramCache]: Analyzing trace with hash 64940, now seen corresponding path program 1 times [2022-11-20 12:43:53,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:43:53,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445114411] [2022-11-20 12:43:53,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:53,404 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 [2022-11-20 12:43:53,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:43:53,413 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 12:43:53,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 12:43:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:53,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:43:53,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:54,099 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2022-11-20 12:43:54,100 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 4 case distinctions, treesize of input 18 treesize of output 70 [2022-11-20 12:43:54,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:43:54,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:43:54,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:43:54,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445114411] [2022-11-20 12:43:54,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445114411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:54,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:43:54,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:43:54,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754721432] [2022-11-20 12:43:54,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:54,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:43:54,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:43:54,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:43:54,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:43:54,229 INFO L87 Difference]: Start difference. First operand has 15555 states, 9553 states have (on average 7.390243902439025) internal successors, (70599), 15554 states have internal predecessors, (70599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:55,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:55,816 INFO L93 Difference]: Finished difference Result 15550 states and 70594 transitions. [2022-11-20 12:43:55,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:43:55,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-20 12:43:55,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:56,383 INFO L225 Difference]: With dead ends: 15550 [2022-11-20 12:43:56,384 INFO L226 Difference]: Without dead ends: 15550 [2022-11-20 12:43:56,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:43:56,404 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 73 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:56,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 0 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 12:43:56,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15550 states. [2022-11-20 12:43:57,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15550 to 15550. [2022-11-20 12:43:57,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15550 states, 9553 states have (on average 7.3897205066471265) internal successors, (70594), 15549 states have internal predecessors, (70594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:58,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15550 states to 15550 states and 70594 transitions. [2022-11-20 12:43:58,160 INFO L78 Accepts]: Start accepts. Automaton has 15550 states and 70594 transitions. Word has length 2 [2022-11-20 12:43:58,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:58,161 INFO L495 AbstractCegarLoop]: Abstraction has 15550 states and 70594 transitions. [2022-11-20 12:43:58,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:58,162 INFO L276 IsEmpty]: Start isEmpty. Operand 15550 states and 70594 transitions. [2022-11-20 12:43:58,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 12:43:58,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:58,163 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 12:43:58,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:43:58,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:43:58,364 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-20 12:43:58,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:58,365 INFO L85 PathProgramCache]: Analyzing trace with hash 64941, now seen corresponding path program 1 times [2022-11-20 12:43:58,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:43:58,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1939763649] [2022-11-20 12:43:58,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:58,367 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 [2022-11-20 12:43:58,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:43:58,371 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 12:43:58,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 12:43:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:58,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:43:58,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:59,008 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-20 12:43:59,030 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 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-20 12:43:59,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:43:59,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:43:59,115 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:43:59,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1939763649] [2022-11-20 12:43:59,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1939763649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:59,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:43:59,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:43:59,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709460048] [2022-11-20 12:43:59,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:59,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:43:59,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:43:59,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:43:59,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:43:59,120 INFO L87 Difference]: Start difference. First operand 15550 states and 70594 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:01,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:01,249 INFO L93 Difference]: Finished difference Result 31095 states and 141183 transitions. [2022-11-20 12:44:01,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:44:01,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-20 12:44:01,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:01,796 INFO L225 Difference]: With dead ends: 31095 [2022-11-20 12:44:01,796 INFO L226 Difference]: Without dead ends: 31095 [2022-11-20 12:44:01,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:44:01,797 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 65 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:01,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 0 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 12:44:02,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31095 states. [2022-11-20 12:44:03,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31095 to 15554. [2022-11-20 12:44:03,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15554 states, 9557 states have (on average 7.387673956262425) internal successors, (70604), 15553 states have internal predecessors, (70604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:03,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15554 states to 15554 states and 70604 transitions. [2022-11-20 12:44:03,573 INFO L78 Accepts]: Start accepts. Automaton has 15554 states and 70604 transitions. Word has length 2 [2022-11-20 12:44:03,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:03,574 INFO L495 AbstractCegarLoop]: Abstraction has 15554 states and 70604 transitions. [2022-11-20 12:44:03,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:03,575 INFO L276 IsEmpty]: Start isEmpty. Operand 15554 states and 70604 transitions. [2022-11-20 12:44:03,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 12:44:03,576 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:03,576 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 12:44:03,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:44:03,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:03,792 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-20 12:44:03,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:03,793 INFO L85 PathProgramCache]: Analyzing trace with hash 2020979, now seen corresponding path program 1 times [2022-11-20 12:44:03,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:44:03,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [706406208] [2022-11-20 12:44:03,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:03,794 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 [2022-11-20 12:44:03,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:44:03,797 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 12:44:03,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 12:44:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:03,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:44:03,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:04,291 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-20 12:44:04,291 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 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-20 12:44:04,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:44:04,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:44:04,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:44:04,737 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:44:04,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [706406208] [2022-11-20 12:44:04,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [706406208] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:44:04,737 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:44:04,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-20 12:44:04,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599221982] [2022-11-20 12:44:04,738 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:44:04,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:44:04,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:44:04,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:44:04,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:44:04,740 INFO L87 Difference]: Start difference. First operand 15554 states and 70604 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:09,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:09,504 INFO L93 Difference]: Finished difference Result 46648 states and 211792 transitions. [2022-11-20 12:44:09,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:44:09,505 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-20 12:44:09,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:10,007 INFO L225 Difference]: With dead ends: 46648 [2022-11-20 12:44:10,007 INFO L226 Difference]: Without dead ends: 46648 [2022-11-20 12:44:10,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:44:10,008 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 458 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:10,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 0 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-20 12:44:10,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46648 states. [2022-11-20 12:44:11,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46648 to 15566. [2022-11-20 12:44:11,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15566 states, 9569 states have (on average 7.381544571010555) internal successors, (70634), 15565 states have internal predecessors, (70634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:11,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15566 states to 15566 states and 70634 transitions. [2022-11-20 12:44:11,627 INFO L78 Accepts]: Start accepts. Automaton has 15566 states and 70634 transitions. Word has length 3 [2022-11-20 12:44:11,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:11,628 INFO L495 AbstractCegarLoop]: Abstraction has 15566 states and 70634 transitions. [2022-11-20 12:44:11,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:11,628 INFO L276 IsEmpty]: Start isEmpty. Operand 15566 states and 70634 transitions. [2022-11-20 12:44:11,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 12:44:11,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:11,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 12:44:11,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 12:44:11,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:11,841 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-20 12:44:11,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:11,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1945732447, now seen corresponding path program 1 times [2022-11-20 12:44:11,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:44:11,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862549247] [2022-11-20 12:44:11,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:11,843 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 [2022-11-20 12:44:11,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:44:11,844 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 12:44:11,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 12:44:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:12,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 12:44:12,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:12,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:12,207 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2022-11-20 12:44:12,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 81 [2022-11-20 12:44:12,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:12,640 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:44:12,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 36 [2022-11-20 12:44:12,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:12,968 INFO L321 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2022-11-20 12:44:12,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 60 [2022-11-20 12:44:17,631 INFO L321 Elim1Store]: treesize reduction 28, result has 50.9 percent of original size [2022-11-20 12:44:17,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 80 [2022-11-20 12:44:20,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:44:20,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:44:20,305 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:44:20,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862549247] [2022-11-20 12:44:20,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862549247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:44:20,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:44:20,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:44:20,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318194573] [2022-11-20 12:44:20,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:44:20,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:44:20,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:44:20,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:44:20,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=14, Unknown=3, NotChecked=0, Total=30 [2022-11-20 12:44:20,307 INFO L87 Difference]: Start difference. First operand 15566 states and 70634 transitions. Second operand has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:20,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:20,904 INFO L93 Difference]: Finished difference Result 15569 states and 70641 transitions. [2022-11-20 12:44:20,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:44:20,905 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 12:44:20,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:21,292 INFO L225 Difference]: With dead ends: 15569 [2022-11-20 12:44:21,293 INFO L226 Difference]: Without dead ends: 15569 [2022-11-20 12:44:21,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=13, Invalid=14, Unknown=3, NotChecked=0, Total=30 [2022-11-20 12:44:21,294 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:21,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 77 Unchecked, 0.5s Time] [2022-11-20 12:44:21,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15569 states. [2022-11-20 12:44:21,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15569 to 15569. [2022-11-20 12:44:21,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15569 states, 9572 states have (on average 7.379962390305057) internal successors, (70641), 15568 states have internal predecessors, (70641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:22,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15569 states to 15569 states and 70641 transitions. [2022-11-20 12:44:22,240 INFO L78 Accepts]: Start accepts. Automaton has 15569 states and 70641 transitions. Word has length 5 [2022-11-20 12:44:22,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:22,241 INFO L495 AbstractCegarLoop]: Abstraction has 15569 states and 70641 transitions. [2022-11-20 12:44:22,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:22,241 INFO L276 IsEmpty]: Start isEmpty. Operand 15569 states and 70641 transitions. [2022-11-20 12:44:22,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 12:44:22,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:22,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 12:44:22,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 12:44:22,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:22,456 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-20 12:44:22,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:22,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1945732449, now seen corresponding path program 1 times [2022-11-20 12:44:22,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:44:22,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867109797] [2022-11-20 12:44:22,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:22,459 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 [2022-11-20 12:44:22,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:44:22,461 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 12:44:22,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 12:44:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:22,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-20 12:44:22,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:22,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:22,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:22,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:22,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:22,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:22,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:22,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:23,000 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-20 12:44:23,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 38 [2022-11-20 12:44:23,063 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-20 12:44:23,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 34 [2022-11-20 12:44:23,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:23,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:44:23,152 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 [2022-11-20 12:44:23,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:23,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:44:23,331 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-20 12:44:23,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-20 12:44:23,477 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:44:23,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-20 12:44:23,557 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 12:44:23,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 12:44:23,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:44:23,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:44:23,735 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:44:23,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867109797] [2022-11-20 12:44:23,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867109797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:44:23,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:44:23,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:44:23,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943359920] [2022-11-20 12:44:23,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:44:23,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:44:23,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:44:23,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:44:23,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:44:23,738 INFO L87 Difference]: Start difference. First operand 15569 states and 70641 transitions. Second operand has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:24,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:24,577 INFO L93 Difference]: Finished difference Result 15571 states and 70645 transitions. [2022-11-20 12:44:24,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:44:24,578 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 12:44:24,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:24,724 INFO L225 Difference]: With dead ends: 15571 [2022-11-20 12:44:24,725 INFO L226 Difference]: Without dead ends: 15571 [2022-11-20 12:44:24,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:44:24,726 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 151 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:24,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 151 Unchecked, 0.7s Time] [2022-11-20 12:44:24,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15571 states. [2022-11-20 12:44:25,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15571 to 15571. [2022-11-20 12:44:25,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15571 states, 9574 states have (on average 7.37883852099436) internal successors, (70645), 15570 states have internal predecessors, (70645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:25,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15571 states to 15571 states and 70645 transitions. [2022-11-20 12:44:25,757 INFO L78 Accepts]: Start accepts. Automaton has 15571 states and 70645 transitions. Word has length 5 [2022-11-20 12:44:25,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:25,757 INFO L495 AbstractCegarLoop]: Abstraction has 15571 states and 70645 transitions. [2022-11-20 12:44:25,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:25,758 INFO L276 IsEmpty]: Start isEmpty. Operand 15571 states and 70645 transitions. [2022-11-20 12:44:25,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 12:44:25,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:25,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 12:44:25,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 12:44:25,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:25,972 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-20 12:44:25,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:25,973 INFO L85 PathProgramCache]: Analyzing trace with hash 185756185, now seen corresponding path program 1 times [2022-11-20 12:44:25,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:44:25,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663522986] [2022-11-20 12:44:25,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:25,974 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 [2022-11-20 12:44:25,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:44:25,975 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 12:44:25,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 12:44:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:26,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 12:44:26,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:26,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:26,457 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2022-11-20 12:44:26,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 81 [2022-11-20 12:44:26,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:26,910 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:44:26,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 36 [2022-11-20 12:44:27,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:27,279 INFO L321 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2022-11-20 12:44:27,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 60 [2022-11-20 12:44:32,009 INFO L321 Elim1Store]: treesize reduction 28, result has 50.9 percent of original size [2022-11-20 12:44:32,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 80 [2022-11-20 12:44:34,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:44:34,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:44:34,593 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:44:34,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663522986] [2022-11-20 12:44:34,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663522986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:44:34,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:44:34,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:44:34,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096874770] [2022-11-20 12:44:34,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:44:34,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:44:34,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:44:34,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:44:34,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=14, Unknown=3, NotChecked=0, Total=30 [2022-11-20 12:44:34,598 INFO L87 Difference]: Start difference. First operand 15571 states and 70645 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:35,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:35,191 INFO L93 Difference]: Finished difference Result 15577 states and 70659 transitions. [2022-11-20 12:44:35,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:44:35,192 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 12:44:35,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:35,587 INFO L225 Difference]: With dead ends: 15577 [2022-11-20 12:44:35,587 INFO L226 Difference]: Without dead ends: 15577 [2022-11-20 12:44:35,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=13, Invalid=14, Unknown=3, NotChecked=0, Total=30 [2022-11-20 12:44:35,592 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 145 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:35,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 145 Unchecked, 0.4s Time] [2022-11-20 12:44:35,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15577 states. [2022-11-20 12:44:36,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15577 to 15577. [2022-11-20 12:44:36,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15577 states, 9580 states have (on average 7.375678496868476) internal successors, (70659), 15576 states have internal predecessors, (70659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:36,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15577 states to 15577 states and 70659 transitions. [2022-11-20 12:44:36,179 INFO L78 Accepts]: Start accepts. Automaton has 15577 states and 70659 transitions. Word has length 6 [2022-11-20 12:44:36,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:36,179 INFO L495 AbstractCegarLoop]: Abstraction has 15577 states and 70659 transitions. [2022-11-20 12:44:36,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:36,180 INFO L276 IsEmpty]: Start isEmpty. Operand 15577 states and 70659 transitions. [2022-11-20 12:44:36,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 12:44:36,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:36,181 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 12:44:36,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 12:44:36,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:36,402 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-20 12:44:36,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:36,403 INFO L85 PathProgramCache]: Analyzing trace with hash 185756187, now seen corresponding path program 1 times [2022-11-20 12:44:36,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:44:36,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [600466360] [2022-11-20 12:44:36,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:36,404 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 [2022-11-20 12:44:36,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:44:36,405 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 12:44:36,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 12:44:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:36,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 12:44:36,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:36,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:36,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:36,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:36,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:36,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:36,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:36,977 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-20 12:44:36,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 41 [2022-11-20 12:44:37,071 INFO L321 Elim1Store]: treesize reduction 26, result has 16.1 percent of original size [2022-11-20 12:44:37,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 165 treesize of output 162 [2022-11-20 12:44:37,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:37,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:44:37,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:37,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:44:37,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:37,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:44:37,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:44:37,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:44:37,285 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:44:37,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [600466360] [2022-11-20 12:44:37,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [600466360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:44:37,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:44:37,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:44:37,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267039290] [2022-11-20 12:44:37,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:44:37,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:44:37,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:44:37,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:44:37,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:44:37,287 INFO L87 Difference]: Start difference. First operand 15577 states and 70659 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:38,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:38,199 INFO L93 Difference]: Finished difference Result 12552 states and 55533 transitions. [2022-11-20 12:44:38,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:44:38,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 12:44:38,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:38,264 INFO L225 Difference]: With dead ends: 12552 [2022-11-20 12:44:38,265 INFO L226 Difference]: Without dead ends: 12552 [2022-11-20 12:44:38,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:44:38,266 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 71 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:38,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 0 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 3 Unchecked, 0.6s Time] [2022-11-20 12:44:38,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12552 states. [2022-11-20 12:44:38,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12552 to 12548. [2022-11-20 12:44:38,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12548 states, 8177 states have (on average 6.790265378500672) internal successors, (55524), 12547 states have internal predecessors, (55524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:38,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12548 states to 12548 states and 55524 transitions. [2022-11-20 12:44:38,747 INFO L78 Accepts]: Start accepts. Automaton has 12548 states and 55524 transitions. Word has length 6 [2022-11-20 12:44:38,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:38,747 INFO L495 AbstractCegarLoop]: Abstraction has 12548 states and 55524 transitions. [2022-11-20 12:44:38,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:38,747 INFO L276 IsEmpty]: Start isEmpty. Operand 12548 states and 55524 transitions. [2022-11-20 12:44:38,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 12:44:38,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:38,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 12:44:38,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 12:44:38,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:38,963 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-20 12:44:38,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:38,963 INFO L85 PathProgramCache]: Analyzing trace with hash 188165288, now seen corresponding path program 1 times [2022-11-20 12:44:38,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:44:38,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492234952] [2022-11-20 12:44:38,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:38,965 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:38,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:44:38,966 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 12:44:38,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 12:44:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:39,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-20 12:44:39,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:39,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:39,496 INFO L321 Elim1Store]: treesize reduction 190, result has 13.2 percent of original size [2022-11-20 12:44:39,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 69 [2022-11-20 12:44:39,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:39,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:39,897 INFO L321 Elim1Store]: treesize reduction 118, result has 27.6 percent of original size [2022-11-20 12:44:39,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 47 treesize of output 87 [2022-11-20 12:44:40,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:40,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:40,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:40,703 INFO L321 Elim1Store]: treesize reduction 140, result has 28.6 percent of original size [2022-11-20 12:44:40,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 13 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 13 case distinctions, treesize of input 54 treesize of output 103 [2022-11-20 12:44:43,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:43,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:43,414 INFO L321 Elim1Store]: treesize reduction 126, result has 25.4 percent of original size [2022-11-20 12:44:43,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 17 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 49 treesize of output 80 [2022-11-20 12:44:50,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:44:50,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:44:50,433 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:44:50,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492234952] [2022-11-20 12:44:50,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492234952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:44:50,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:44:50,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:44:50,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15114246] [2022-11-20 12:44:50,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:44:50,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:44:50,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:44:50,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:44:50,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=16, Unknown=4, NotChecked=0, Total=30 [2022-11-20 12:44:50,435 INFO L87 Difference]: Start difference. First operand 12548 states and 55524 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:50,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:50,931 INFO L93 Difference]: Finished difference Result 12554 states and 55537 transitions. [2022-11-20 12:44:50,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:44:50,932 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 12:44:50,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:51,000 INFO L225 Difference]: With dead ends: 12554 [2022-11-20 12:44:51,000 INFO L226 Difference]: Without dead ends: 12554 [2022-11-20 12:44:51,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=10, Invalid=16, Unknown=4, NotChecked=0, Total=30 [2022-11-20 12:44:51,001 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 272 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:51,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 272 Unchecked, 0.4s Time] [2022-11-20 12:44:51,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12554 states. [2022-11-20 12:44:51,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12554 to 12554. [2022-11-20 12:44:51,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12554 states, 8183 states have (on average 6.786875229133569) internal successors, (55537), 12553 states have internal predecessors, (55537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:51,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12554 states to 12554 states and 55537 transitions. [2022-11-20 12:44:51,647 INFO L78 Accepts]: Start accepts. Automaton has 12554 states and 55537 transitions. Word has length 6 [2022-11-20 12:44:51,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:51,648 INFO L495 AbstractCegarLoop]: Abstraction has 12554 states and 55537 transitions. [2022-11-20 12:44:51,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:51,648 INFO L276 IsEmpty]: Start isEmpty. Operand 12554 states and 55537 transitions. [2022-11-20 12:44:51,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 12:44:51,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:51,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 12:44:51,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 12:44:51,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:51,873 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-20 12:44:51,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:51,874 INFO L85 PathProgramCache]: Analyzing trace with hash 188041443, now seen corresponding path program 1 times [2022-11-20 12:44:51,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:44:51,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152118404] [2022-11-20 12:44:51,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:51,875 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 [2022-11-20 12:44:51,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:44:51,877 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 12:44:51,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 12:44:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:52,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 12:44:52,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:52,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:52,390 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2022-11-20 12:44:52,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 81 [2022-11-20 12:44:52,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:52,863 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:44:52,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 36 [2022-11-20 12:44:53,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:53,263 INFO L321 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2022-11-20 12:44:53,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 60 [2022-11-20 12:44:55,966 INFO L321 Elim1Store]: treesize reduction 28, result has 50.9 percent of original size [2022-11-20 12:44:55,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 80 [2022-11-20 12:44:58,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:44:58,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:44:58,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:44:58,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152118404] [2022-11-20 12:44:58,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [152118404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:44:58,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:44:58,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:44:58,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426204335] [2022-11-20 12:44:58,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:44:58,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:44:58,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:44:58,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:44:58,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=14, Unknown=1, NotChecked=0, Total=30 [2022-11-20 12:44:58,563 INFO L87 Difference]: Start difference. First operand 12554 states and 55537 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:59,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:59,054 INFO L93 Difference]: Finished difference Result 12559 states and 55548 transitions. [2022-11-20 12:44:59,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:44:59,055 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 12:44:59,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:59,124 INFO L225 Difference]: With dead ends: 12559 [2022-11-20 12:44:59,124 INFO L226 Difference]: Without dead ends: 12559 [2022-11-20 12:44:59,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=15, Invalid=14, Unknown=1, NotChecked=0, Total=30 [2022-11-20 12:44:59,125 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:59,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 75 Unchecked, 0.4s Time] [2022-11-20 12:44:59,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12559 states. [2022-11-20 12:44:59,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12559 to 12558. [2022-11-20 12:44:59,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12558 states, 8187 states have (on average 6.784658605105656) internal successors, (55546), 12557 states have internal predecessors, (55546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:59,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12558 states to 12558 states and 55546 transitions. [2022-11-20 12:44:59,719 INFO L78 Accepts]: Start accepts. Automaton has 12558 states and 55546 transitions. Word has length 6 [2022-11-20 12:44:59,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:59,719 INFO L495 AbstractCegarLoop]: Abstraction has 12558 states and 55546 transitions. [2022-11-20 12:44:59,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:59,720 INFO L276 IsEmpty]: Start isEmpty. Operand 12558 states and 55546 transitions. [2022-11-20 12:44:59,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 12:44:59,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:59,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 12:44:59,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 12:44:59,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:44:59,923 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-20 12:44:59,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:59,924 INFO L85 PathProgramCache]: Analyzing trace with hash 88518361, now seen corresponding path program 1 times [2022-11-20 12:44:59,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:44:59,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418322985] [2022-11-20 12:44:59,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:59,924 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 [2022-11-20 12:44:59,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:44:59,926 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 12:44:59,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40a8edb-de00-4d93-867b-2c7586a0101f/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 12:45:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:45:00,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 12:45:00,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:45:00,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:45:00,538 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2022-11-20 12:45:00,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 81 [2022-11-20 12:45:01,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:45:01,630 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-20 12:45:01,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 52 [2022-11-20 12:45:02,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:45:03,022 INFO L321 Elim1Store]: treesize reduction 66, result has 49.2 percent of original size [2022-11-20 12:45:03,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 83 treesize of output 146 [2022-11-20 12:45:17,735 WARN L233 SmtUtils]: Spent 8.11s on a formula simplification. DAG size of input: 158 DAG size of output: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:45:19,160 INFO L321 Elim1Store]: treesize reduction 76, result has 73.7 percent of original size [2022-11-20 12:45:19,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 140 treesize of output 341 [2022-11-20 12:53:41,848 WARN L233 SmtUtils]: Spent 11.14s on a formula simplification that was a NOOP. DAG size: 2328 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 12:54:02,075 WARN L233 SmtUtils]: Spent 15.42s on a formula simplification. DAG size of input: 2128 DAG size of output: 2126 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 12:54:12,760 WARN L233 SmtUtils]: Spent 10.63s on a formula simplification that was a NOOP. DAG size: 2129 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 12:54:31,367 WARN L233 SmtUtils]: Spent 13.21s on a formula simplification. DAG size of input: 1949 DAG size of output: 1948 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)