./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/test-context1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/test-context1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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_82665e5b-423e-466b-abdd-09aa72d0b314/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 a6c10414fe2617d00008bf9d366bc6ac1618cf93ea0f6ae08bc6c5a126364bce --- 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 11:58:48,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:58:48,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:58:48,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:58:48,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:58:48,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:58:48,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:58:48,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:58:48,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:58:48,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:58:48,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:58:48,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:58:48,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:58:48,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:58:48,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:58:48,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:58:48,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:58:48,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:58:48,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:58:48,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:58:48,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:58:48,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:58:48,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:58:48,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:58:48,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:58:48,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:58:48,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:58:48,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:58:48,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:58:48,851 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:58:48,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:58:48,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:58:48,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:58:48,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:58:48,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:58:48,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:58:48,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:58:48,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:58:48,860 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:58:48,861 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:58:48,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:58:48,869 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 11:58:48,913 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:58:48,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:58:48,917 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:58:48,917 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:58:48,918 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:58:48,919 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:58:48,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:58:48,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:58:48,920 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:58:48,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:58:48,922 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:58:48,923 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:58:48,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:58:48,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:58:48,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:58:48,924 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 11:58:48,925 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 11:58:48,925 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 11:58:48,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:58:48,925 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:58:48,926 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:58:48,926 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:58:48,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:58:48,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:58:48,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:58:48,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:58:48,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:58:48,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:58:48,929 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:58:48,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:58:48,929 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_82665e5b-423e-466b-abdd-09aa72d0b314/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6c10414fe2617d00008bf9d366bc6ac1618cf93ea0f6ae08bc6c5a126364bce [2022-11-20 11:58:49,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:58:49,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:58:49,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:58:49,289 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:58:49,290 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:58:49,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/test-context1.wvr.c [2022-11-20 11:58:53,112 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:58:53,340 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:58:53,341 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/sv-benchmarks/c/weaver/test-context1.wvr.c [2022-11-20 11:58:53,350 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/data/0adf04a4e/231e360e4cae45c2b5b512a51c686c13/FLAG3ee5ee4e1 [2022-11-20 11:58:53,369 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/data/0adf04a4e/231e360e4cae45c2b5b512a51c686c13 [2022-11-20 11:58:53,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:58:53,374 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:58:53,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:58:53,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:58:53,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:58:53,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:58:53" (1/1) ... [2022-11-20 11:58:53,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57f1b2fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:53, skipping insertion in model container [2022-11-20 11:58:53,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:58:53" (1/1) ... [2022-11-20 11:58:53,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:58:53,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:58:53,629 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_82665e5b-423e-466b-abdd-09aa72d0b314/sv-benchmarks/c/weaver/test-context1.wvr.c[2433,2446] [2022-11-20 11:58:53,641 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:58:53,655 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 11:58:53,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2a03af0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:53, skipping insertion in model container [2022-11-20 11:58:53,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:58:53,656 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-20 11:58:53,659 INFO L158 Benchmark]: Toolchain (without parser) took 283.37ms. Allocated memory is still 123.7MB. Free memory was 84.7MB in the beginning and 75.2MB in the end (delta: 9.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-20 11:58:53,660 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 123.7MB. Free memory is still 71.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:58:53,661 INFO L158 Benchmark]: CACSL2BoogieTranslator took 280.18ms. Allocated memory is still 123.7MB. Free memory was 84.7MB in the beginning and 75.2MB in the end (delta: 9.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-20 11:58:53,663 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 123.7MB. Free memory is still 71.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 280.18ms. Allocated memory is still 123.7MB. Free memory was 84.7MB in the beginning and 75.2MB in the end (delta: 9.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 94]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/test-context1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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_82665e5b-423e-466b-abdd-09aa72d0b314/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 a6c10414fe2617d00008bf9d366bc6ac1618cf93ea0f6ae08bc6c5a126364bce --- 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 11:58:56,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:58:56,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:58:56,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:58:56,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:58:56,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:58:56,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:58:56,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:58:56,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:58:56,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:58:56,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:58:56,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:58:56,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:58:56,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:58:56,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:58:56,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:58:56,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:58:56,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:58:56,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:58:56,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:58:56,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:58:56,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:58:56,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:58:56,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:58:56,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:58:56,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:58:56,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:58:56,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:58:56,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:58:56,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:58:56,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:58:56,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:58:56,756 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:58:56,757 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:58:56,759 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:58:56,759 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:58:56,760 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:58:56,760 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:58:56,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:58:56,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:58:56,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:58:56,771 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-20 11:58:56,814 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:58:56,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:58:56,815 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:58:56,815 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:58:56,816 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:58:56,816 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:58:56,817 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:58:56,817 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:58:56,818 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:58:56,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:58:56,818 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:58:56,818 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:58:56,819 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:58:56,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:58:56,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:58:56,819 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 11:58:56,819 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 11:58:56,820 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 11:58:56,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:58:56,820 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:58:56,820 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 11:58:56,821 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 11:58:56,821 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:58:56,821 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:58:56,821 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:58:56,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:58:56,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:58:56,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:58:56,822 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:58:56,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:58:56,823 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 11:58:56,823 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 11:58:56,823 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 11:58:56,824 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_82665e5b-423e-466b-abdd-09aa72d0b314/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6c10414fe2617d00008bf9d366bc6ac1618cf93ea0f6ae08bc6c5a126364bce [2022-11-20 11:58:57,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:58:57,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:58:57,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:58:57,301 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:58:57,302 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:58:57,304 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/test-context1.wvr.c [2022-11-20 11:59:01,152 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:59:01,434 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:59:01,435 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/sv-benchmarks/c/weaver/test-context1.wvr.c [2022-11-20 11:59:01,446 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/data/1d24de225/84a8e26077384a2f819a6116ac1b53a7/FLAG16e2d9f27 [2022-11-20 11:59:01,483 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/data/1d24de225/84a8e26077384a2f819a6116ac1b53a7 [2022-11-20 11:59:01,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:59:01,494 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:59:01,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:59:01,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:59:01,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:59:01,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:59:01" (1/1) ... [2022-11-20 11:59:01,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@912e6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:01, skipping insertion in model container [2022-11-20 11:59:01,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:59:01" (1/1) ... [2022-11-20 11:59:01,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:59:01,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:59:01,889 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_82665e5b-423e-466b-abdd-09aa72d0b314/sv-benchmarks/c/weaver/test-context1.wvr.c[2433,2446] [2022-11-20 11:59:01,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:59:01,926 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 11:59:01,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:59:01,958 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_82665e5b-423e-466b-abdd-09aa72d0b314/sv-benchmarks/c/weaver/test-context1.wvr.c[2433,2446] [2022-11-20 11:59:01,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:59:01,989 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:59:02,048 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_82665e5b-423e-466b-abdd-09aa72d0b314/sv-benchmarks/c/weaver/test-context1.wvr.c[2433,2446] [2022-11-20 11:59:02,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:59:02,080 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:59:02,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:02 WrapperNode [2022-11-20 11:59:02,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:59:02,083 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:59:02,083 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:59:02,084 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:59:02,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:02" (1/1) ... [2022-11-20 11:59:02,124 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:02" (1/1) ... [2022-11-20 11:59:02,165 INFO L138 Inliner]: procedures = 26, calls = 34, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 129 [2022-11-20 11:59:02,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:59:02,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:59:02,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:59:02,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:59:02,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:02" (1/1) ... [2022-11-20 11:59:02,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:02" (1/1) ... [2022-11-20 11:59:02,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:02" (1/1) ... [2022-11-20 11:59:02,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:02" (1/1) ... [2022-11-20 11:59:02,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:02" (1/1) ... [2022-11-20 11:59:02,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:02" (1/1) ... [2022-11-20 11:59:02,206 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:02" (1/1) ... [2022-11-20 11:59:02,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:02" (1/1) ... [2022-11-20 11:59:02,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:59:02,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:59:02,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:59:02,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:59:02,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:02" (1/1) ... [2022-11-20 11:59:02,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:59:02,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:59:02,259 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:59:02,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:59:02,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:59:02,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 11:59:02,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:59:02,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 11:59:02,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:59:02,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:59:02,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:59:02,328 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:59:02,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 11:59:02,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 11:59:02,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:59:02,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:59:02,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:59:02,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:59:02,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 11:59:02,331 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 11:59:02,466 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:59:02,469 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:59:03,217 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:59:03,501 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:59:03,502 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 11:59:03,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:59:03 BoogieIcfgContainer [2022-11-20 11:59:03,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:59:03,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:59:03,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:59:03,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:59:03,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:59:01" (1/3) ... [2022-11-20 11:59:03,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15066f73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:59:03, skipping insertion in model container [2022-11-20 11:59:03,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:02" (2/3) ... [2022-11-20 11:59:03,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15066f73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:59:03, skipping insertion in model container [2022-11-20 11:59:03,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:59:03" (3/3) ... [2022-11-20 11:59:03,515 INFO L112 eAbstractionObserver]: Analyzing ICFG test-context1.wvr.c [2022-11-20 11:59:03,539 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:59:03,539 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-20 11:59:03,539 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:59:03,667 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 11:59:03,727 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 11:59:03,750 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 132 transitions, 280 flow [2022-11-20 11:59:03,756 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 132 transitions, 280 flow [2022-11-20 11:59:03,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 132 transitions, 280 flow [2022-11-20 11:59:03,909 INFO L130 PetriNetUnfolder]: 9/130 cut-off events. [2022-11-20 11:59:03,909 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:59:03,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 130 events. 9/130 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2022-11-20 11:59:03,921 INFO L119 LiptonReduction]: Number of co-enabled transitions 660 [2022-11-20 11:59:27,805 INFO L134 LiptonReduction]: Checked pairs total: 931 [2022-11-20 11:59:27,806 INFO L136 LiptonReduction]: Total number of compositions: 145 [2022-11-20 11:59:27,816 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 33 transitions, 82 flow [2022-11-20 11:59:27,842 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 106 states, 62 states have (on average 4.048387096774194) internal successors, (251), 105 states have internal predecessors, (251), 0 states have call successors, (0), 0 states 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 11:59:27,863 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:59:27,871 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;@acd75e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:59:27,872 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-20 11:59:27,874 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 62 states have (on average 4.048387096774194) internal successors, (251), 105 states have internal predecessors, (251), 0 states have call successors, (0), 0 states 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 11:59:27,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 11:59:27,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:27,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 11:59:27,882 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 11:59:27,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:27,889 INFO L85 PathProgramCache]: Analyzing trace with hash 19439, now seen corresponding path program 1 times [2022-11-20 11:59:27,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:59:27,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053106909] [2022-11-20 11:59:27,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:27,906 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:59:27,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:59:27,913 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:27,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:28,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 11:59:28,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:28,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:59:28,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:59:28,205 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:59:28,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2022-11-20 11:59:28,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-20 11:59:28,333 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 11:59:28,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:59:28,334 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:59:28,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053106909] [2022-11-20 11:59:28,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2053106909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:28,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:28,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:59:28,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886262317] [2022-11-20 11:59:28,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:28,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:59:28,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:59:28,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:59:28,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:59:28,389 INFO L87 Difference]: Start difference. First operand has 106 states, 62 states have (on average 4.048387096774194) internal successors, (251), 105 states have internal predecessors, (251), 0 states have call successors, (0), 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 11:59:28,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:28,600 INFO L93 Difference]: Finished difference Result 106 states and 255 transitions. [2022-11-20 11:59:28,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:59:28,603 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 11:59:28,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:28,614 INFO L225 Difference]: With dead ends: 106 [2022-11-20 11:59:28,615 INFO L226 Difference]: Without dead ends: 106 [2022-11-20 11:59:28,616 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 11:59:28,620 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:28,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 28 Unchecked, 0.2s Time] [2022-11-20 11:59:28,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-20 11:59:28,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-11-20 11:59:28,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 63 states have (on average 4.0476190476190474) internal successors, (255), 105 states have internal predecessors, (255), 0 states have call successors, (0), 0 states 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 11:59:28,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 255 transitions. [2022-11-20 11:59:28,680 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 255 transitions. Word has length 2 [2022-11-20 11:59:28,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:28,682 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 255 transitions. [2022-11-20 11:59:28,682 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 11:59:28,682 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 255 transitions. [2022-11-20 11:59:28,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 11:59:28,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:28,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 11:59:28,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:28,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:28,896 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 11:59:28,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:28,896 INFO L85 PathProgramCache]: Analyzing trace with hash 19440, now seen corresponding path program 1 times [2022-11-20 11:59:28,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:59:28,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815449581] [2022-11-20 11:59:28,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:28,898 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:59:28,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:59:28,899 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:28,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:28,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 11:59:28,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:29,045 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-11-20 11:59:29,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 29 [2022-11-20 11:59:29,090 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 11:59:29,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:59:29,090 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:59:29,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815449581] [2022-11-20 11:59:29,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815449581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:29,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:29,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:59:29,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299440661] [2022-11-20 11:59:29,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:29,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:59:29,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:59:29,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:59:29,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:59:29,094 INFO L87 Difference]: Start difference. First operand 106 states and 255 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 11:59:29,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:29,234 INFO L93 Difference]: Finished difference Result 106 states and 254 transitions. [2022-11-20 11:59:29,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:59:29,235 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 11:59:29,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:29,237 INFO L225 Difference]: With dead ends: 106 [2022-11-20 11:59:29,237 INFO L226 Difference]: Without dead ends: 106 [2022-11-20 11:59:29,237 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 11:59:29,239 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:29,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 28 Unchecked, 0.1s Time] [2022-11-20 11:59:29,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-20 11:59:29,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-11-20 11:59:29,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 63 states have (on average 4.031746031746032) internal successors, (254), 105 states have internal predecessors, (254), 0 states have call successors, (0), 0 states 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 11:59:29,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 254 transitions. [2022-11-20 11:59:29,252 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 254 transitions. Word has length 2 [2022-11-20 11:59:29,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:29,253 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 254 transitions. [2022-11-20 11:59:29,253 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 11:59:29,253 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 254 transitions. [2022-11-20 11:59:29,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 11:59:29,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:29,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 11:59:29,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:29,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:29,467 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 11:59:29,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:29,467 INFO L85 PathProgramCache]: Analyzing trace with hash 19347, now seen corresponding path program 1 times [2022-11-20 11:59:29,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:59:29,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516862073] [2022-11-20 11:59:29,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:29,469 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 11:59:29,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:59:29,470 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:29,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:29,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:59:29,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:29,601 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-20 11:59:29,602 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 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-20 11:59:29,622 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 11:59:29,622 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:59:29,624 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:59:29,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516862073] [2022-11-20 11:59:29,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516862073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:29,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:29,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:59:29,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693044988] [2022-11-20 11:59:29,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:29,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:59:29,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:59:29,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:59:29,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:59:29,629 INFO L87 Difference]: Start difference. First operand 106 states and 254 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 11:59:29,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:29,810 INFO L93 Difference]: Finished difference Result 105 states and 252 transitions. [2022-11-20 11:59:29,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:59:29,811 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 11:59:29,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:29,812 INFO L225 Difference]: With dead ends: 105 [2022-11-20 11:59:29,813 INFO L226 Difference]: Without dead ends: 105 [2022-11-20 11:59:29,813 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 11:59:29,814 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:29,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 0 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:59:29,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-20 11:59:29,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-11-20 11:59:29,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 63 states have (on average 4.0) internal successors, (252), 104 states have internal predecessors, (252), 0 states have call successors, (0), 0 states 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 11:59:29,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 252 transitions. [2022-11-20 11:59:29,829 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 252 transitions. Word has length 2 [2022-11-20 11:59:29,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:29,830 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 252 transitions. [2022-11-20 11:59:29,830 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 11:59:29,830 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 252 transitions. [2022-11-20 11:59:29,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 11:59:29,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:29,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 11:59:29,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:30,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:30,047 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 11:59:30,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:30,047 INFO L85 PathProgramCache]: Analyzing trace with hash 19348, now seen corresponding path program 1 times [2022-11-20 11:59:30,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:59:30,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529077744] [2022-11-20 11:59:30,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:30,048 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 11:59:30,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:59:30,050 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:30,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:30,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 11:59:30,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:30,252 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 11:59:30,253 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-20 11:59:30,300 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 11:59:30,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:59:30,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:59:30,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529077744] [2022-11-20 11:59:30,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529077744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:30,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:30,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:59:30,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445881393] [2022-11-20 11:59:30,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:30,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:59:30,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:59:30,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:59:30,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:59:30,303 INFO L87 Difference]: Start difference. First operand 105 states and 252 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 11:59:30,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:30,644 INFO L93 Difference]: Finished difference Result 204 states and 494 transitions. [2022-11-20 11:59:30,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:59:30,645 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 11:59:30,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:30,647 INFO L225 Difference]: With dead ends: 204 [2022-11-20 11:59:30,647 INFO L226 Difference]: Without dead ends: 204 [2022-11-20 11:59:30,648 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 11:59:30,649 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:30,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:59:30,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-11-20 11:59:30,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 105. [2022-11-20 11:59:30,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 63 states have (on average 3.984126984126984) internal successors, (251), 104 states have internal predecessors, (251), 0 states have call successors, (0), 0 states 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 11:59:30,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 251 transitions. [2022-11-20 11:59:30,680 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 251 transitions. Word has length 2 [2022-11-20 11:59:30,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:30,681 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 251 transitions. [2022-11-20 11:59:30,681 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 11:59:30,681 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 251 transitions. [2022-11-20 11:59:30,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 11:59:30,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:30,682 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 11:59:30,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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)] Forceful destruction successful, exit code 0 [2022-11-20 11:59:30,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:30,883 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 11:59:30,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:30,884 INFO L85 PathProgramCache]: Analyzing trace with hash 602797, now seen corresponding path program 1 times [2022-11-20 11:59:30,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:59:30,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499101969] [2022-11-20 11:59:30,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:30,884 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 11:59:30,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:59:30,886 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:30,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:30,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 11:59:30,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:31,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:59:31,111 INFO L321 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2022-11-20 11:59:31,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 26 [2022-11-20 11:59:31,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-20 11:59:31,321 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 11:59:31,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:59:31,580 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 11:59:31,581 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:59:31,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499101969] [2022-11-20 11:59:31,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499101969] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:59:31,581 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:59:31,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-20 11:59:31,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220785838] [2022-11-20 11:59:31,582 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:59:31,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:59:31,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:59:31,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:59:31,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:59:31,583 INFO L87 Difference]: Start difference. First operand 105 states and 251 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 11:59:32,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:32,332 INFO L93 Difference]: Finished difference Result 107 states and 259 transitions. [2022-11-20 11:59:32,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:59:32,335 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 11:59:32,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:32,338 INFO L225 Difference]: With dead ends: 107 [2022-11-20 11:59:32,338 INFO L226 Difference]: Without dead ends: 107 [2022-11-20 11:59:32,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:59:32,339 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:32,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 0 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 53 Unchecked, 0.5s Time] [2022-11-20 11:59:32,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-20 11:59:32,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-11-20 11:59:32,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 65 states have (on average 3.9846153846153847) internal successors, (259), 106 states have internal predecessors, (259), 0 states have call successors, (0), 0 states 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 11:59:32,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 259 transitions. [2022-11-20 11:59:32,350 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 259 transitions. Word has length 3 [2022-11-20 11:59:32,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:32,350 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 259 transitions. [2022-11-20 11:59:32,351 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 11:59:32,351 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 259 transitions. [2022-11-20 11:59:32,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 11:59:32,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:32,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 11:59:32,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:32,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:32,566 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 11:59:32,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:32,566 INFO L85 PathProgramCache]: Analyzing trace with hash 602798, now seen corresponding path program 1 times [2022-11-20 11:59:32,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:59:32,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238665616] [2022-11-20 11:59:32,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:32,567 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 11:59:32,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:59:32,568 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:32,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:32,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 11:59:32,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:32,742 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-11-20 11:59:32,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 29 [2022-11-20 11:59:32,805 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 11:59:32,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:59:32,806 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:59:32,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238665616] [2022-11-20 11:59:32,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1238665616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:32,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:32,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:59:32,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35913052] [2022-11-20 11:59:32,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:32,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:59:32,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:59:32,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:59:32,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:59:32,810 INFO L87 Difference]: Start difference. First operand 107 states and 259 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states 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 11:59:32,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:32,939 INFO L93 Difference]: Finished difference Result 106 states and 256 transitions. [2022-11-20 11:59:32,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:59:32,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 11:59:32,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:32,941 INFO L225 Difference]: With dead ends: 106 [2022-11-20 11:59:32,941 INFO L226 Difference]: Without dead ends: 106 [2022-11-20 11:59:32,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 11:59:32,943 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:32,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 26 Unchecked, 0.1s Time] [2022-11-20 11:59:32,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-20 11:59:32,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-11-20 11:59:32,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 65 states have (on average 3.9384615384615387) internal successors, (256), 105 states have internal predecessors, (256), 0 states have call successors, (0), 0 states 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 11:59:32,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 256 transitions. [2022-11-20 11:59:32,951 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 256 transitions. Word has length 3 [2022-11-20 11:59:32,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:32,952 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 256 transitions. [2022-11-20 11:59:32,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states 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 11:59:32,952 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 256 transitions. [2022-11-20 11:59:32,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 11:59:32,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:32,953 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 11:59:32,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:33,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:33,168 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 11:59:33,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:33,169 INFO L85 PathProgramCache]: Analyzing trace with hash 602706, now seen corresponding path program 1 times [2022-11-20 11:59:33,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:59:33,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663490108] [2022-11-20 11:59:33,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:33,169 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 11:59:33,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:59:33,171 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:33,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:33,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:33,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 11:59:33,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:33,367 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 11:59:33,368 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-20 11:59:33,470 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 11:59:33,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:59:33,774 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 11:59:33,774 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:59:33,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663490108] [2022-11-20 11:59:33,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663490108] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:59:33,775 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:59:33,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-20 11:59:33,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337387572] [2022-11-20 11:59:33,775 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:59:33,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:59:33,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:59:33,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:59:33,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:59:33,777 INFO L87 Difference]: Start difference. First operand 106 states and 256 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 11:59:34,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:34,542 INFO L93 Difference]: Finished difference Result 305 states and 743 transitions. [2022-11-20 11:59:34,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:59:34,543 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 11:59:34,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:34,545 INFO L225 Difference]: With dead ends: 305 [2022-11-20 11:59:34,546 INFO L226 Difference]: Without dead ends: 305 [2022-11-20 11:59:34,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:59:34,547 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 94 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:34,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 0 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:59:34,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-11-20 11:59:34,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 107. [2022-11-20 11:59:34,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 66 states have (on average 3.893939393939394) internal successors, (257), 106 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:34,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 257 transitions. [2022-11-20 11:59:34,557 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 257 transitions. Word has length 3 [2022-11-20 11:59:34,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:34,558 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 257 transitions. [2022-11-20 11:59:34,558 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 11:59:34,558 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 257 transitions. [2022-11-20 11:59:34,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 11:59:34,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:34,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 11:59:34,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:34,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:34,773 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 11:59:34,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:34,774 INFO L85 PathProgramCache]: Analyzing trace with hash 18693761, now seen corresponding path program 1 times [2022-11-20 11:59:34,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:59:34,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [989305596] [2022-11-20 11:59:34,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:34,775 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 11:59:34,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:59:34,776 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:34,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:34,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:59:34,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:34,928 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-11-20 11:59:34,928 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 2 case distinctions, treesize of input 12 treesize of output 22 [2022-11-20 11:59:34,961 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 11:59:34,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:59:34,962 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:59:34,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [989305596] [2022-11-20 11:59:34,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [989305596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:34,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:34,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:59:34,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910285695] [2022-11-20 11:59:34,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:34,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:59:34,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:59:34,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:59:34,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:59:34,964 INFO L87 Difference]: Start difference. First operand 107 states and 257 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:35,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:35,173 INFO L93 Difference]: Finished difference Result 99 states and 241 transitions. [2022-11-20 11:59:35,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:59:35,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-20 11:59:35,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:35,175 INFO L225 Difference]: With dead ends: 99 [2022-11-20 11:59:35,175 INFO L226 Difference]: Without dead ends: 99 [2022-11-20 11:59:35,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 11:59:35,176 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:35,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:59:35,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-20 11:59:35,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2022-11-20 11:59:35,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 64 states have (on average 3.765625) internal successors, (241), 98 states have internal predecessors, (241), 0 states have call successors, (0), 0 states 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 11:59:35,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 241 transitions. [2022-11-20 11:59:35,193 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 241 transitions. Word has length 4 [2022-11-20 11:59:35,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:35,193 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 241 transitions. [2022-11-20 11:59:35,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:35,193 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 241 transitions. [2022-11-20 11:59:35,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 11:59:35,194 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:35,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 11:59:35,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:35,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:35,416 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 11:59:35,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:35,416 INFO L85 PathProgramCache]: Analyzing trace with hash 18693762, now seen corresponding path program 1 times [2022-11-20 11:59:35,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:59:35,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524616162] [2022-11-20 11:59:35,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:35,417 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 11:59:35,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:59:35,427 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:35,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:35,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:59:35,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:35,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:59:35,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:59:35,579 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:59:35,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2022-11-20 11:59:35,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-20 11:59:35,619 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 11:59:35,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:59:35,619 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:59:35,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524616162] [2022-11-20 11:59:35,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524616162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:35,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:35,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:59:35,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255397790] [2022-11-20 11:59:35,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:35,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:59:35,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:59:35,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:59:35,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:59:35,622 INFO L87 Difference]: Start difference. First operand 99 states and 241 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:35,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:35,767 INFO L93 Difference]: Finished difference Result 91 states and 225 transitions. [2022-11-20 11:59:35,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:59:35,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-20 11:59:35,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:35,769 INFO L225 Difference]: With dead ends: 91 [2022-11-20 11:59:35,769 INFO L226 Difference]: Without dead ends: 91 [2022-11-20 11:59:35,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 11:59:35,770 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:35,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:59:35,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-20 11:59:35,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-11-20 11:59:35,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 62 states have (on average 3.629032258064516) internal successors, (225), 90 states have internal predecessors, (225), 0 states have call successors, (0), 0 states 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 11:59:35,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 225 transitions. [2022-11-20 11:59:35,776 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 225 transitions. Word has length 4 [2022-11-20 11:59:35,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:35,777 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 225 transitions. [2022-11-20 11:59:35,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:35,777 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 225 transitions. [2022-11-20 11:59:35,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 11:59:35,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:35,777 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 11:59:35,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:35,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:35,997 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 11:59:35,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:35,998 INFO L85 PathProgramCache]: Analyzing trace with hash 18693719, now seen corresponding path program 1 times [2022-11-20 11:59:35,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:59:35,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148572767] [2022-11-20 11:59:35,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:35,998 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:59:35,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:59:36,000 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:36,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:36,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:59:36,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:36,148 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-20 11:59:36,148 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 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-20 11:59:36,184 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 11:59:36,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:59:36,184 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:59:36,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148572767] [2022-11-20 11:59:36,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [148572767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:36,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:36,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:59:36,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457207539] [2022-11-20 11:59:36,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:36,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:59:36,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:59:36,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:59:36,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:59:36,186 INFO L87 Difference]: Start difference. First operand 91 states and 225 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:36,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:36,361 INFO L93 Difference]: Finished difference Result 59 states and 140 transitions. [2022-11-20 11:59:36,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:59:36,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-20 11:59:36,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:36,363 INFO L225 Difference]: With dead ends: 59 [2022-11-20 11:59:36,363 INFO L226 Difference]: Without dead ends: 59 [2022-11-20 11:59:36,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:59:36,364 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:36,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:59:36,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-20 11:59:36,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-11-20 11:59:36,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 45 states have (on average 3.111111111111111) internal successors, (140), 58 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:36,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 140 transitions. [2022-11-20 11:59:36,369 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 140 transitions. Word has length 4 [2022-11-20 11:59:36,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:36,370 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 140 transitions. [2022-11-20 11:59:36,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:36,370 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 140 transitions. [2022-11-20 11:59:36,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 11:59:36,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:36,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 11:59:36,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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)] Ended with exit code 0 [2022-11-20 11:59:36,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:36,584 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 11:59:36,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:36,585 INFO L85 PathProgramCache]: Analyzing trace with hash 18693720, now seen corresponding path program 1 times [2022-11-20 11:59:36,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:59:36,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2090144349] [2022-11-20 11:59:36,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:36,586 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 11:59:36,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:59:36,587 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:36,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (12)] Waiting until timeout for monitored process [2022-11-20 11:59:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:36,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 11:59:36,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:36,780 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 11:59:36,781 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-20 11:59:36,888 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 11:59:36,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:59:36,888 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:59:36,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2090144349] [2022-11-20 11:59:36,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2090144349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:36,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:36,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:59:36,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211653937] [2022-11-20 11:59:36,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:36,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:59:36,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:59:36,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:59:36,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:59:36,890 INFO L87 Difference]: Start difference. First operand 59 states and 140 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:37,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:37,178 INFO L93 Difference]: Finished difference Result 85 states and 192 transitions. [2022-11-20 11:59:37,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:59:37,179 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-20 11:59:37,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:37,180 INFO L225 Difference]: With dead ends: 85 [2022-11-20 11:59:37,180 INFO L226 Difference]: Without dead ends: 85 [2022-11-20 11:59:37,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:59:37,181 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:37,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 0 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:59:37,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-20 11:59:37,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 77. [2022-11-20 11:59:37,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 63 states have (on average 2.9365079365079363) internal successors, (185), 76 states have internal predecessors, (185), 0 states have call successors, (0), 0 states 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 11:59:37,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 185 transitions. [2022-11-20 11:59:37,187 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 185 transitions. Word has length 4 [2022-11-20 11:59:37,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:37,187 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 185 transitions. [2022-11-20 11:59:37,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:37,188 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 185 transitions. [2022-11-20 11:59:37,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 11:59:37,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:37,188 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1] [2022-11-20 11:59:37,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (12)] Forceful destruction successful, exit code 0 [2022-11-20 11:59:37,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:37,400 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 11:59:37,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:37,400 INFO L85 PathProgramCache]: Analyzing trace with hash 579293933, now seen corresponding path program 2 times [2022-11-20 11:59:37,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:59:37,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [278574434] [2022-11-20 11:59:37,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:59:37,401 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 11:59:37,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:59:37,402 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:37,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (13)] Waiting until timeout for monitored process [2022-11-20 11:59:37,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:59:37,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:59:37,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:59:37,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:37,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:59:37,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:59:37,578 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:59:37,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2022-11-20 11:59:37,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-20 11:59:37,685 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:59:37,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:59:37,685 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:59:37,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [278574434] [2022-11-20 11:59:37,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [278574434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:37,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:37,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:59:37,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765088556] [2022-11-20 11:59:37,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:37,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:59:37,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:59:37,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:59:37,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:59:37,688 INFO L87 Difference]: Start difference. First operand 77 states and 185 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states 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 11:59:37,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:37,777 INFO L93 Difference]: Finished difference Result 76 states and 183 transitions. [2022-11-20 11:59:37,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:59:37,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 11:59:37,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:37,779 INFO L225 Difference]: With dead ends: 76 [2022-11-20 11:59:37,779 INFO L226 Difference]: Without dead ends: 76 [2022-11-20 11:59:37,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 11:59:37,780 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:37,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 19 Unchecked, 0.1s Time] [2022-11-20 11:59:37,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-20 11:59:37,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-11-20 11:59:37,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 63 states have (on average 2.9047619047619047) internal successors, (183), 75 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 11:59:37,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 183 transitions. [2022-11-20 11:59:37,785 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 183 transitions. Word has length 5 [2022-11-20 11:59:37,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:37,785 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 183 transitions. [2022-11-20 11:59:37,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states 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 11:59:37,786 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 183 transitions. [2022-11-20 11:59:37,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 11:59:37,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:37,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 11:59:37,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (13)] Forceful destruction successful, exit code 0 [2022-11-20 11:59:37,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:37,987 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 11:59:37,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:37,987 INFO L85 PathProgramCache]: Analyzing trace with hash 579505854, now seen corresponding path program 1 times [2022-11-20 11:59:37,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:59:37,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [216365294] [2022-11-20 11:59:37,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:37,988 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:59:37,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:59:37,989 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:37,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (14)] Waiting until timeout for monitored process [2022-11-20 11:59:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:38,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:59:38,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:38,191 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 11:59:38,191 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-20 11:59:38,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:38,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:59:38,341 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:59:38,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [216365294] [2022-11-20 11:59:38,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [216365294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:38,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:38,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:59:38,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460612052] [2022-11-20 11:59:38,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:38,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:59:38,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:59:38,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:59:38,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:59:38,343 INFO L87 Difference]: Start difference. First operand 76 states and 183 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:38,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:38,544 INFO L93 Difference]: Finished difference Result 78 states and 186 transitions. [2022-11-20 11:59:38,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:59:38,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 11:59:38,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:38,546 INFO L225 Difference]: With dead ends: 78 [2022-11-20 11:59:38,546 INFO L226 Difference]: Without dead ends: 78 [2022-11-20 11:59:38,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:59:38,547 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:38,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 21 Unchecked, 0.2s Time] [2022-11-20 11:59:38,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-20 11:59:38,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-11-20 11:59:38,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 65 states have (on average 2.8615384615384616) internal successors, (186), 77 states have internal predecessors, (186), 0 states have call successors, (0), 0 states 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 11:59:38,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 186 transitions. [2022-11-20 11:59:38,552 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 186 transitions. Word has length 5 [2022-11-20 11:59:38,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:38,553 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 186 transitions. [2022-11-20 11:59:38,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:38,553 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 186 transitions. [2022-11-20 11:59:38,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 11:59:38,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:38,554 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-20 11:59:38,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (14)] Forceful destruction successful, exit code 0 [2022-11-20 11:59:38,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:38,765 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 11:59:38,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:38,765 INFO L85 PathProgramCache]: Analyzing trace with hash 778242836, now seen corresponding path program 2 times [2022-11-20 11:59:38,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:59:38,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [256632670] [2022-11-20 11:59:38,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:59:38,766 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 11:59:38,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:59:38,767 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:38,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (15)] Waiting until timeout for monitored process [2022-11-20 11:59:38,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:59:38,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:59:38,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 11:59:38,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:38,999 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 11:59:38,999 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-20 11:59:39,230 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:39,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:59:40,154 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:40,154 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:59:40,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [256632670] [2022-11-20 11:59:40,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [256632670] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:59:40,154 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:59:40,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-20 11:59:40,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534333028] [2022-11-20 11:59:40,155 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:59:40,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:59:40,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:59:40,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:59:40,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:59:40,156 INFO L87 Difference]: Start difference. First operand 78 states and 186 transitions. Second operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:44,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:44,713 INFO L93 Difference]: Finished difference Result 700 states and 1727 transitions. [2022-11-20 11:59:44,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:59:44,714 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 11:59:44,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:44,721 INFO L225 Difference]: With dead ends: 700 [2022-11-20 11:59:44,721 INFO L226 Difference]: Without dead ends: 700 [2022-11-20 11:59:44,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:59:44,722 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 561 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:44,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 0 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-20 11:59:44,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2022-11-20 11:59:44,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 84. [2022-11-20 11:59:44,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 71 states have (on average 2.788732394366197) internal successors, (198), 83 states have internal predecessors, (198), 0 states have call successors, (0), 0 states 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 11:59:44,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 198 transitions. [2022-11-20 11:59:44,737 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 198 transitions. Word has length 6 [2022-11-20 11:59:44,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:44,738 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 198 transitions. [2022-11-20 11:59:44,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:44,738 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 198 transitions. [2022-11-20 11:59:44,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 11:59:44,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:44,739 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 11:59:44,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (15)] Ended with exit code 0 [2022-11-20 11:59:44,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:44,954 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 11:59:44,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:44,954 INFO L85 PathProgramCache]: Analyzing trace with hash 778454848, now seen corresponding path program 1 times [2022-11-20 11:59:44,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:59:44,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633550295] [2022-11-20 11:59:44,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:44,955 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 11:59:44,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:59:44,956 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:44,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (16)] Waiting until timeout for monitored process [2022-11-20 11:59:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:45,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 11:59:45,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:45,183 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 11:59:45,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-20 11:59:45,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:59:45,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:59:46,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:59:46,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:59:46,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633550295] [2022-11-20 11:59:46,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633550295] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:59:46,365 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:59:46,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-20 11:59:46,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170786991] [2022-11-20 11:59:46,365 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:59:46,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:59:46,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:59:46,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:59:46,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:59:46,366 INFO L87 Difference]: Start difference. First operand 84 states and 198 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:49,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:59:51,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:59:53,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:59:55,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:59:57,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:59:58,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:58,533 INFO L93 Difference]: Finished difference Result 222 states and 523 transitions. [2022-11-20 11:59:58,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:59:58,535 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 11:59:58,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:58,536 INFO L225 Difference]: With dead ends: 222 [2022-11-20 11:59:58,537 INFO L226 Difference]: Without dead ends: 222 [2022-11-20 11:59:58,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:59:58,538 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 94 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 8 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:58,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 0 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 141 Invalid, 5 Unknown, 0 Unchecked, 11.3s Time] [2022-11-20 11:59:58,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-20 11:59:58,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 130. [2022-11-20 11:59:58,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 117 states have (on average 3.034188034188034) internal successors, (355), 129 states have internal predecessors, (355), 0 states have call successors, (0), 0 states 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 11:59:58,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 355 transitions. [2022-11-20 11:59:58,548 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 355 transitions. Word has length 6 [2022-11-20 11:59:58,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:58,548 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 355 transitions. [2022-11-20 11:59:58,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:58,549 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 355 transitions. [2022-11-20 11:59:58,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 11:59:58,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:58,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 11:59:58,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (16)] Forceful destruction successful, exit code 0 [2022-11-20 11:59:58,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:58,765 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 11:59:58,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:58,766 INFO L85 PathProgramCache]: Analyzing trace with hash 784848063, now seen corresponding path program 1 times [2022-11-20 11:59:58,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:59:58,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595530223] [2022-11-20 11:59:58,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:58,766 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 11:59:58,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:59:58,768 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:58,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (17)] Waiting until timeout for monitored process [2022-11-20 11:59:58,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:58,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:59:58,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:58,894 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 11:59:58,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:59:58,895 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:59:58,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595530223] [2022-11-20 11:59:58,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [595530223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:58,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:58,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:59:58,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613515688] [2022-11-20 11:59:58,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:58,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:59:58,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:59:58,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:59:58,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:59:58,900 INFO L87 Difference]: Start difference. First operand 130 states and 355 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:59,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:59,026 INFO L93 Difference]: Finished difference Result 109 states and 284 transitions. [2022-11-20 11:59:59,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:59:59,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 11:59:59,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:59,028 INFO L225 Difference]: With dead ends: 109 [2022-11-20 11:59:59,028 INFO L226 Difference]: Without dead ends: 109 [2022-11-20 11:59:59,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:59:59,029 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:59,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:59:59,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-11-20 11:59:59,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2022-11-20 11:59:59,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 100 states have (on average 2.84) internal successors, (284), 108 states have internal predecessors, (284), 0 states have call successors, (0), 0 states 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 11:59:59,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 284 transitions. [2022-11-20 11:59:59,036 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 284 transitions. Word has length 6 [2022-11-20 11:59:59,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:59,036 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 284 transitions. [2022-11-20 11:59:59,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:59,037 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 284 transitions. [2022-11-20 11:59:59,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 11:59:59,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:59,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 11:59:59,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (17)] Forceful destruction successful, exit code 0 [2022-11-20 11:59:59,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:59,255 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 11:59:59,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:59,255 INFO L85 PathProgramCache]: Analyzing trace with hash 784848064, now seen corresponding path program 1 times [2022-11-20 11:59:59,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:59:59,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057408506] [2022-11-20 11:59:59,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:59,256 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:59:59,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:59:59,258 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:59,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (18)] Waiting until timeout for monitored process [2022-11-20 11:59:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:59,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:59:59,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:59,414 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 11:59:59,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:59:59,414 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:59:59,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1057408506] [2022-11-20 11:59:59,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1057408506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:59,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:59,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:59:59,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479503004] [2022-11-20 11:59:59,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:59,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:59:59,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:59:59,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:59:59,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:59:59,416 INFO L87 Difference]: Start difference. First operand 109 states and 284 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 11:59:59,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:59,547 INFO L93 Difference]: Finished difference Result 88 states and 213 transitions. [2022-11-20 11:59:59,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:59:59,548 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 11:59:59,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:59,550 INFO L225 Difference]: With dead ends: 88 [2022-11-20 11:59:59,550 INFO L226 Difference]: Without dead ends: 88 [2022-11-20 11:59:59,550 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 11:59:59,551 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:59,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:59:59,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-20 11:59:59,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-11-20 11:59:59,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 2.566265060240964) internal successors, (213), 87 states have internal predecessors, (213), 0 states have call successors, (0), 0 states 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 11:59:59,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 213 transitions. [2022-11-20 11:59:59,557 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 213 transitions. Word has length 6 [2022-11-20 11:59:59,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:59,557 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 213 transitions. [2022-11-20 11:59:59,557 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 11:59:59,557 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 213 transitions. [2022-11-20 11:59:59,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 11:59:59,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:59,558 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:59,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (18)] Ended with exit code 0 [2022-11-20 11:59:59,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:59,777 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 11:59:59,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:59,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1673088061, now seen corresponding path program 1 times [2022-11-20 11:59:59,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:59:59,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713204045] [2022-11-20 11:59:59,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:59,778 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 11:59:59,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:59:59,780 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 11:59:59,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (19)] Waiting until timeout for monitored process [2022-11-20 11:59:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:59,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:59:59,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:00:00,066 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 12:00:00,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:00:00,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2022-11-20 12:00:00,794 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 12:00:00,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:00:00,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713204045] [2022-11-20 12:00:00,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713204045] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:00:00,795 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:00:00,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-20 12:00:00,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586831598] [2022-11-20 12:00:00,795 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:00:00,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:00:00,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:00:00,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:00:00,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:00:00,797 INFO L87 Difference]: Start difference. First operand 88 states and 213 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:04,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:00:06,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:00:08,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:00:08,230 INFO L93 Difference]: Finished difference Result 230 states and 482 transitions. [2022-11-20 12:00:08,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:00:08,231 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 12:00:08,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:00:08,233 INFO L225 Difference]: With dead ends: 230 [2022-11-20 12:00:08,233 INFO L226 Difference]: Without dead ends: 230 [2022-11-20 12:00:08,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:00:08,234 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 246 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 14 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:00:08,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 0 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 188 Invalid, 2 Unknown, 0 Unchecked, 6.4s Time] [2022-11-20 12:00:08,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-20 12:00:08,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 104. [2022-11-20 12:00:08,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 99 states have (on average 2.7474747474747474) internal successors, (272), 103 states have internal predecessors, (272), 0 states have call successors, (0), 0 states 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 12:00:08,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 272 transitions. [2022-11-20 12:00:08,242 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 272 transitions. Word has length 8 [2022-11-20 12:00:08,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:00:08,242 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 272 transitions. [2022-11-20 12:00:08,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:08,243 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 272 transitions. [2022-11-20 12:00:08,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 12:00:08,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:00:08,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:00:08,258 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (19)] Ended with exit code 0 [2022-11-20 12:00:08,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:00:08,458 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 12:00:08,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:08,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1673155114, now seen corresponding path program 1 times [2022-11-20 12:00:08,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:00:08,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060751040] [2022-11-20 12:00:08,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:00:08,460 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 12:00:08,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:00:08,461 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:00:08,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (20)] Waiting until timeout for monitored process [2022-11-20 12:00:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:08,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:00:08,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:00:08,615 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 12:00:08,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:00:08,658 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 12:00:08,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:00:08,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060751040] [2022-11-20 12:00:08,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2060751040] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:00:08,659 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:00:08,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-20 12:00:08,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570167090] [2022-11-20 12:00:08,659 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:00:08,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:00:08,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:00:08,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:00:08,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:00:08,661 INFO L87 Difference]: Start difference. First operand 104 states and 272 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:08,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:00:08,962 INFO L93 Difference]: Finished difference Result 152 states and 370 transitions. [2022-11-20 12:00:08,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:00:08,963 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 12:00:08,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:00:08,964 INFO L225 Difference]: With dead ends: 152 [2022-11-20 12:00:08,964 INFO L226 Difference]: Without dead ends: 152 [2022-11-20 12:00:08,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:00:08,965 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 55 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:00:08,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 0 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:00:08,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-20 12:00:08,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 116. [2022-11-20 12:00:08,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 111 states have (on average 2.8468468468468466) internal successors, (316), 115 states have internal predecessors, (316), 0 states have call successors, (0), 0 states 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 12:00:08,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 316 transitions. [2022-11-20 12:00:08,973 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 316 transitions. Word has length 8 [2022-11-20 12:00:08,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:00:08,973 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 316 transitions. [2022-11-20 12:00:08,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:08,974 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 316 transitions. [2022-11-20 12:00:08,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 12:00:08,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:00:08,975 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2022-11-20 12:00:09,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (20)] Ended with exit code 0 [2022-11-20 12:00:09,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:00:09,202 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 12:00:09,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:09,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1874491370, now seen corresponding path program 2 times [2022-11-20 12:00:09,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:00:09,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661203507] [2022-11-20 12:00:09,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:00:09,203 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 12:00:09,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:00:09,205 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:00:09,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (21)] Waiting until timeout for monitored process [2022-11-20 12:00:09,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:00:09,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:00:09,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:00:09,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:00:09,449 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 12:00:09,449 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-20 12:00:09,633 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 12:00:09,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:00:09,633 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:00:09,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661203507] [2022-11-20 12:00:09,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [661203507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:00:09,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:00:09,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:00:09,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031846557] [2022-11-20 12:00:09,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:00:09,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:00:09,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:00:09,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:00:09,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:00:09,635 INFO L87 Difference]: Start difference. First operand 116 states and 316 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 12:00:09,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:00:09,905 INFO L93 Difference]: Finished difference Result 132 states and 343 transitions. [2022-11-20 12:00:09,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:00:09,906 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 9 [2022-11-20 12:00:09,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:00:09,907 INFO L225 Difference]: With dead ends: 132 [2022-11-20 12:00:09,907 INFO L226 Difference]: Without dead ends: 132 [2022-11-20 12:00:09,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:00:09,909 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:00:09,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:00:09,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-20 12:00:09,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 102. [2022-11-20 12:00:09,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 97 states have (on average 2.783505154639175) internal successors, (270), 101 states have internal predecessors, (270), 0 states have call successors, (0), 0 states 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 12:00:09,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 270 transitions. [2022-11-20 12:00:09,915 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 270 transitions. Word has length 9 [2022-11-20 12:00:09,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:00:09,915 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 270 transitions. [2022-11-20 12:00:09,916 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 12:00:09,916 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 270 transitions. [2022-11-20 12:00:09,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 12:00:09,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:00:09,917 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:00:09,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (21)] Forceful destruction successful, exit code 0 [2022-11-20 12:00:10,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:00:10,118 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 12:00:10,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:10,118 INFO L85 PathProgramCache]: Analyzing trace with hash -326121805, now seen corresponding path program 1 times [2022-11-20 12:00:10,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:00:10,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709136254] [2022-11-20 12:00:10,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:00:10,119 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 12:00:10,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:00:10,120 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:00:10,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (22)] Waiting until timeout for monitored process [2022-11-20 12:00:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:10,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 12:00:10,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:00:10,369 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 12:00:10,369 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-20 12:00:10,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:00:10,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:00:11,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:00:11,604 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:00:11,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709136254] [2022-11-20 12:00:11,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709136254] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:00:11,604 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:00:11,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-20 12:00:11,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206478725] [2022-11-20 12:00:11,605 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:00:11,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:00:11,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:00:11,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:00:11,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:00:11,607 INFO L87 Difference]: Start difference. First operand 102 states and 270 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:13,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:00:13,114 INFO L93 Difference]: Finished difference Result 122 states and 335 transitions. [2022-11-20 12:00:13,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:00:13,115 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 12:00:13,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:00:13,117 INFO L225 Difference]: With dead ends: 122 [2022-11-20 12:00:13,117 INFO L226 Difference]: Without dead ends: 122 [2022-11-20 12:00:13,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:00:13,118 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:00:13,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 6 Unchecked, 1.0s Time] [2022-11-20 12:00:13,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-20 12:00:13,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 116. [2022-11-20 12:00:13,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 111 states have (on average 2.873873873873874) internal successors, (319), 115 states have internal predecessors, (319), 0 states have call successors, (0), 0 states 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 12:00:13,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 319 transitions. [2022-11-20 12:00:13,124 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 319 transitions. Word has length 9 [2022-11-20 12:00:13,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:00:13,125 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 319 transitions. [2022-11-20 12:00:13,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:13,125 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 319 transitions. [2022-11-20 12:00:13,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 12:00:13,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:00:13,126 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:00:13,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (22)] Forceful destruction successful, exit code 0 [2022-11-20 12:00:13,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:00:13,326 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 12:00:13,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:13,327 INFO L85 PathProgramCache]: Analyzing trace with hash -393468685, now seen corresponding path program 2 times [2022-11-20 12:00:13,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:00:13,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790479013] [2022-11-20 12:00:13,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:00:13,328 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:00:13,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:00:13,329 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:00:13,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (23)] Waiting until timeout for monitored process [2022-11-20 12:00:13,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:00:13,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:00:13,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:00:13,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:00:13,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 12:00:13,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:00:13,518 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:00:13,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790479013] [2022-11-20 12:00:13,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790479013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:00:13,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:00:13,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:00:13,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623898046] [2022-11-20 12:00:13,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:00:13,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:00:13,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:00:13,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:00:13,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:00:13,521 INFO L87 Difference]: Start difference. First operand 116 states and 319 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:13,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:00:13,761 INFO L93 Difference]: Finished difference Result 132 states and 341 transitions. [2022-11-20 12:00:13,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:00:13,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 12:00:13,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:00:13,763 INFO L225 Difference]: With dead ends: 132 [2022-11-20 12:00:13,763 INFO L226 Difference]: Without dead ends: 132 [2022-11-20 12:00:13,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:00:13,764 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:00:13,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:00:13,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-20 12:00:13,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 120. [2022-11-20 12:00:13,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 115 states have (on average 2.8434782608695652) internal successors, (327), 119 states have internal predecessors, (327), 0 states have call successors, (0), 0 states 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 12:00:13,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 327 transitions. [2022-11-20 12:00:13,771 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 327 transitions. Word has length 9 [2022-11-20 12:00:13,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:00:13,771 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 327 transitions. [2022-11-20 12:00:13,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:13,772 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 327 transitions. [2022-11-20 12:00:13,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 12:00:13,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:00:13,772 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:00:13,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (23)] Ended with exit code 0 [2022-11-20 12:00:13,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:00:13,988 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 12:00:13,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:13,988 INFO L85 PathProgramCache]: Analyzing trace with hash 2021402741, now seen corresponding path program 1 times [2022-11-20 12:00:13,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:00:13,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [41197199] [2022-11-20 12:00:13,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:00:13,989 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 12:00:13,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:00:13,990 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:00:13,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (24)] Waiting until timeout for monitored process [2022-11-20 12:00:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:14,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 12:00:14,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:00:14,229 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 12:00:14,229 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-20 12:00:14,551 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:00:14,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:00:15,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:00:15,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:00:15,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [41197199] [2022-11-20 12:00:15,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [41197199] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:00:15,836 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:00:15,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-20 12:00:15,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319651815] [2022-11-20 12:00:15,836 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:00:15,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:00:15,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:00:15,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:00:15,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:00:15,837 INFO L87 Difference]: Start difference. First operand 120 states and 327 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:16,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:00:16,852 INFO L93 Difference]: Finished difference Result 133 states and 343 transitions. [2022-11-20 12:00:16,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:00:16,854 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 12:00:16,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:00:16,855 INFO L225 Difference]: With dead ends: 133 [2022-11-20 12:00:16,855 INFO L226 Difference]: Without dead ends: 133 [2022-11-20 12:00:16,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:00:16,856 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:00:16,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 0 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 73 Unchecked, 0.7s Time] [2022-11-20 12:00:16,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-20 12:00:16,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 121. [2022-11-20 12:00:16,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 116 states have (on average 2.836206896551724) internal successors, (329), 120 states have internal predecessors, (329), 0 states have call successors, (0), 0 states 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 12:00:16,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 329 transitions. [2022-11-20 12:00:16,862 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 329 transitions. Word has length 10 [2022-11-20 12:00:16,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:00:16,862 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 329 transitions. [2022-11-20 12:00:16,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:16,863 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 329 transitions. [2022-11-20 12:00:16,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 12:00:16,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:00:16,864 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:00:16,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (24)] Forceful destruction successful, exit code 0 [2022-11-20 12:00:17,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:00:17,076 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 12:00:17,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:17,076 INFO L85 PathProgramCache]: Analyzing trace with hash 2056258211, now seen corresponding path program 2 times [2022-11-20 12:00:17,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:00:17,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293626374] [2022-11-20 12:00:17,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:00:17,077 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 12:00:17,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:00:17,079 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:00:17,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (25)] Waiting until timeout for monitored process [2022-11-20 12:00:17,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:00:17,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:00:17,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 12:00:17,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:00:17,390 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 12:00:17,391 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-20 12:00:17,535 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:00:17,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:00:17,536 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:00:17,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293626374] [2022-11-20 12:00:17,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293626374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:00:17,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:00:17,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:00:17,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120587748] [2022-11-20 12:00:17,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:00:17,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:00:17,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:00:17,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:00:17,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:00:17,537 INFO L87 Difference]: Start difference. First operand 121 states and 329 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:17,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:00:17,720 INFO L93 Difference]: Finished difference Result 101 states and 266 transitions. [2022-11-20 12:00:17,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:00:17,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 12:00:17,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:00:17,722 INFO L225 Difference]: With dead ends: 101 [2022-11-20 12:00:17,722 INFO L226 Difference]: Without dead ends: 101 [2022-11-20 12:00:17,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:00:17,723 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:00:17,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:00:17,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-20 12:00:17,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 62. [2022-11-20 12:00:17,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 60 states have (on average 2.2) internal successors, (132), 61 states have internal predecessors, (132), 0 states have call successors, (0), 0 states 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 12:00:17,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 132 transitions. [2022-11-20 12:00:17,728 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 132 transitions. Word has length 10 [2022-11-20 12:00:17,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:00:17,728 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 132 transitions. [2022-11-20 12:00:17,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:17,729 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 132 transitions. [2022-11-20 12:00:17,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 12:00:17,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:00:17,730 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1] [2022-11-20 12:00:17,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (25)] Forceful destruction successful, exit code 0 [2022-11-20 12:00:17,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:00:17,943 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 12:00:17,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:17,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1207754156, now seen corresponding path program 3 times [2022-11-20 12:00:17,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:00:17,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1475876023] [2022-11-20 12:00:17,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:00:17,944 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:00:17,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:00:17,946 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:00:17,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (26)] Waiting until timeout for monitored process [2022-11-20 12:00:18,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-20 12:00:18,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:00:18,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 12:00:18,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:00:18,351 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 12:00:18,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-20 12:00:18,938 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:00:18,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:00:22,518 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:00:22,519 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:00:22,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1475876023] [2022-11-20 12:00:22,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1475876023] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:00:22,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:00:22,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-11-20 12:00:22,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612978729] [2022-11-20 12:00:22,520 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:00:22,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 12:00:22,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:00:22,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 12:00:22,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-11-20 12:00:22,522 INFO L87 Difference]: Start difference. First operand 62 states and 132 transitions. Second operand has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:48,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:00:48,699 INFO L93 Difference]: Finished difference Result 861 states and 1939 transitions. [2022-11-20 12:00:48,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 12:00:48,701 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 12:00:48,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:00:48,706 INFO L225 Difference]: With dead ends: 861 [2022-11-20 12:00:48,706 INFO L226 Difference]: Without dead ends: 861 [2022-11-20 12:00:48,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 21.8s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 12:00:48,707 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1409 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1840 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1409 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:00:48,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1409 Valid, 0 Invalid, 1862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1840 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-20 12:00:48,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2022-11-20 12:00:48,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 74. [2022-11-20 12:00:48,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 72 states have (on average 2.1666666666666665) internal successors, (156), 73 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 12:00:48,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 156 transitions. [2022-11-20 12:00:48,722 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 156 transitions. Word has length 12 [2022-11-20 12:00:48,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:00:48,723 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 156 transitions. [2022-11-20 12:00:48,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:48,723 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 156 transitions. [2022-11-20 12:00:48,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 12:00:48,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:00:48,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:00:48,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (26)] Forceful destruction successful, exit code 0 [2022-11-20 12:00:48,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:00:48,940 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 12:00:48,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:48,941 INFO L85 PathProgramCache]: Analyzing trace with hash -551101226, now seen corresponding path program 1 times [2022-11-20 12:00:48,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:00:48,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1681234760] [2022-11-20 12:00:48,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:00:48,941 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 12:00:48,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:00:48,943 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:00:48,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (27)] Waiting until timeout for monitored process [2022-11-20 12:00:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:49,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:00:49,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:00:49,094 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 12:00:49,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:00:49,094 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:00:49,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1681234760] [2022-11-20 12:00:49,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1681234760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:00:49,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:00:49,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 12:00:49,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446937867] [2022-11-20 12:00:49,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:00:49,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:00:49,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:00:49,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:00:49,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:00:49,106 INFO L87 Difference]: Start difference. First operand 74 states and 156 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:49,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:00:49,256 INFO L93 Difference]: Finished difference Result 99 states and 219 transitions. [2022-11-20 12:00:49,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:00:49,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 12:00:49,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:00:49,258 INFO L225 Difference]: With dead ends: 99 [2022-11-20 12:00:49,258 INFO L226 Difference]: Without dead ends: 79 [2022-11-20 12:00:49,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 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 12:00:49,259 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:00:49,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:00:49,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-20 12:00:49,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-11-20 12:00:49,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 77 states have (on average 2.1818181818181817) internal successors, (168), 78 states have internal predecessors, (168), 0 states have call successors, (0), 0 states 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 12:00:49,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 168 transitions. [2022-11-20 12:00:49,263 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 168 transitions. Word has length 12 [2022-11-20 12:00:49,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:00:49,264 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 168 transitions. [2022-11-20 12:00:49,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:49,264 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 168 transitions. [2022-11-20 12:00:49,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 12:00:49,264 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:00:49,264 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:00:49,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (27)] Forceful destruction successful, exit code 0 [2022-11-20 12:00:49,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:00:49,475 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 12:00:49,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:49,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1421231573, now seen corresponding path program 1 times [2022-11-20 12:00:49,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:00:49,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679142799] [2022-11-20 12:00:49,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:00:49,476 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 12:00:49,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:00:49,478 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:00:49,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (28)] Waiting until timeout for monitored process [2022-11-20 12:00:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:49,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 12:00:49,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:00:49,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2022-11-20 12:00:49,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:00:49,959 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:00:49,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 19 [2022-11-20 12:00:50,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:00:50,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:00:50,489 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-20 12:00:50,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 147 treesize of output 105 [2022-11-20 12:00:50,500 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:00:50,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 9 [2022-11-20 12:00:50,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:00:50,785 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:00:50,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679142799] [2022-11-20 12:00:50,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679142799] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:00:50,785 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:00:50,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-20 12:00:50,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998879742] [2022-11-20 12:00:50,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:00:50,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:00:50,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:00:50,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:00:50,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=101, Unknown=1, NotChecked=0, Total=132 [2022-11-20 12:00:50,787 INFO L87 Difference]: Start difference. First operand 79 states and 168 transitions. Second operand has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:51,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:00:51,208 INFO L93 Difference]: Finished difference Result 104 states and 231 transitions. [2022-11-20 12:00:51,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:00:51,209 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-20 12:00:51,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:00:51,210 INFO L225 Difference]: With dead ends: 104 [2022-11-20 12:00:51,210 INFO L226 Difference]: Without dead ends: 87 [2022-11-20 12:00:51,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=119, Unknown=1, NotChecked=0, Total=156 [2022-11-20 12:00:51,211 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:00:51,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 98 Invalid, 0 Unknown, 52 Unchecked, 0.4s Time] [2022-11-20 12:00:51,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-20 12:00:51,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-11-20 12:00:51,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 85 states have (on average 2.176470588235294) internal successors, (185), 86 states have internal predecessors, (185), 0 states have call successors, (0), 0 states 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 12:00:51,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 185 transitions. [2022-11-20 12:00:51,216 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 185 transitions. Word has length 15 [2022-11-20 12:00:51,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:00:51,216 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 185 transitions. [2022-11-20 12:00:51,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:51,217 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 185 transitions. [2022-11-20 12:00:51,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 12:00:51,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:00:51,217 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:00:51,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (28)] Forceful destruction successful, exit code 0 [2022-11-20 12:00:51,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:00:51,418 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 12:00:51,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:51,419 INFO L85 PathProgramCache]: Analyzing trace with hash -978810992, now seen corresponding path program 2 times [2022-11-20 12:00:51,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:00:51,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [599864442] [2022-11-20 12:00:51,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:00:51,419 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 12:00:51,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:00:51,420 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:00:51,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (29)] Waiting until timeout for monitored process [2022-11-20 12:00:51,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:00:51,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:00:51,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 12:00:51,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:00:51,848 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 12:00:51,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:00:52,276 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 12:00:52,276 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:00:52,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [599864442] [2022-11-20 12:00:52,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [599864442] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:00:52,277 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:00:52,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-20 12:00:52,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215490897] [2022-11-20 12:00:52,277 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:00:52,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:00:52,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:00:52,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:00:52,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:00:52,279 INFO L87 Difference]: Start difference. First operand 87 states and 185 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states 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 12:00:53,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:00:53,966 INFO L93 Difference]: Finished difference Result 95 states and 195 transitions. [2022-11-20 12:00:53,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:00:53,968 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-20 12:00:53,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:00:53,968 INFO L225 Difference]: With dead ends: 95 [2022-11-20 12:00:53,968 INFO L226 Difference]: Without dead ends: 84 [2022-11-20 12:00:53,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:00:53,969 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:00:53,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-20 12:00:53,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-20 12:00:53,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-11-20 12:00:53,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 82 states have (on average 2.1951219512195124) internal successors, (180), 83 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 12:00:53,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 180 transitions. [2022-11-20 12:00:53,974 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 180 transitions. Word has length 17 [2022-11-20 12:00:53,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:00:53,974 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 180 transitions. [2022-11-20 12:00:53,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states 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 12:00:53,974 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 180 transitions. [2022-11-20 12:00:53,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 12:00:53,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:00:53,975 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:00:53,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (29)] Forceful destruction successful, exit code 0 [2022-11-20 12:00:54,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:00:54,179 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 12:00:54,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:54,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1783863050, now seen corresponding path program 3 times [2022-11-20 12:00:54,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:00:54,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366447707] [2022-11-20 12:00:54,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:00:54,181 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:00:54,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:00:54,182 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:00:54,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (30)] Waiting until timeout for monitored process [2022-11-20 12:00:54,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 12:00:54,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:00:54,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 12:00:54,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:00:54,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-20 12:00:54,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2022-11-20 12:00:54,899 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:00:54,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 19 [2022-11-20 12:00:55,011 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:00:55,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:00:55,589 INFO L321 Elim1Store]: treesize reduction 120, result has 25.5 percent of original size [2022-11-20 12:00:55,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 149 treesize of output 106 [2022-11-20 12:00:55,598 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:00:55,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 9 [2022-11-20 12:00:56,003 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 12:00:56,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:00:56,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366447707] [2022-11-20 12:00:56,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366447707] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:00:56,004 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:00:56,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 15 [2022-11-20 12:00:56,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726194398] [2022-11-20 12:00:56,004 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:00:56,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 12:00:56,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:00:56,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 12:00:56,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=225, Unknown=3, NotChecked=0, Total=272 [2022-11-20 12:00:56,006 INFO L87 Difference]: Start difference. First operand 84 states and 180 transitions. Second operand has 17 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states 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 12:00:58,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:01:01,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:01:01,265 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_643 (Array (_ BitVec 32) (_ BitVec 8)))) (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_643) c_~queue~0.base)) (.cse1 (bvmul (_ bv4 32) c_~front~0))) (concat (concat (concat (select .cse0 (bvadd c_~queue~0.offset .cse1 (_ bv7 32))) (select .cse0 (bvadd c_~queue~0.offset (_ bv6 32) .cse1))) (select .cse0 (bvadd c_~queue~0.offset .cse1 (_ bv5 32)))) (select .cse0 (bvadd c_~queue~0.offset (_ bv4 32) .cse1)))) (_ bv5 32))) (exists ((v_arrayElimCell_31 (_ BitVec 8)) (v_arrayElimCell_29 (_ BitVec 8)) (v_arrayElimCell_28 (_ BitVec 8)) (v_arrayElimCell_30 (_ BitVec 8))) (let ((.cse2 (concat (concat (concat v_arrayElimCell_31 v_arrayElimCell_28) v_arrayElimCell_29) v_arrayElimCell_30))) (and (= c_~x~0 .cse2) (= (_ bv5 32) .cse2)))) (= c_~x~0 (_ bv5 32))) is different from false [2022-11-20 12:01:03,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:01:05,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:01:05,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:01:05,859 INFO L93 Difference]: Finished difference Result 149 states and 314 transitions. [2022-11-20 12:01:05,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:01:05,860 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-20 12:01:05,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:01:05,861 INFO L225 Difference]: With dead ends: 149 [2022-11-20 12:01:05,862 INFO L226 Difference]: Without dead ends: 142 [2022-11-20 12:01:05,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=88, Invalid=464, Unknown=4, NotChecked=44, Total=600 [2022-11-20 12:01:05,863 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 70 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 11 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 118 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:01:05,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 0 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 418 Invalid, 4 Unknown, 118 Unchecked, 9.3s Time] [2022-11-20 12:01:05,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-20 12:01:05,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 104. [2022-11-20 12:01:05,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 102 states have (on average 2.3529411764705883) internal successors, (240), 103 states have internal predecessors, (240), 0 states have call successors, (0), 0 states 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 12:01:05,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 240 transitions. [2022-11-20 12:01:05,869 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 240 transitions. Word has length 18 [2022-11-20 12:01:05,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:01:05,869 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 240 transitions. [2022-11-20 12:01:05,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states 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 12:01:05,870 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 240 transitions. [2022-11-20 12:01:05,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 12:01:05,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:01:05,871 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:05,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (30)] Forceful destruction successful, exit code 0 [2022-11-20 12:01:06,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:01:06,088 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 12:01:06,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:06,088 INFO L85 PathProgramCache]: Analyzing trace with hash -862165920, now seen corresponding path program 4 times [2022-11-20 12:01:06,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:01:06,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967578345] [2022-11-20 12:01:06,089 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:01:06,089 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 12:01:06,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:01:06,091 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:01:06,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (31)] Waiting until timeout for monitored process [2022-11-20 12:01:06,318 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:01:06,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:01:06,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 12:01:06,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:01:06,551 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:01:06,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 19 [2022-11-20 12:01:06,651 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:01:06,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:01:06,854 INFO L321 Elim1Store]: treesize reduction 168, result has 2.9 percent of original size [2022-11-20 12:01:06,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 102 treesize of output 25 [2022-11-20 12:01:06,950 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:01:06,950 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:01:06,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967578345] [2022-11-20 12:01:06,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967578345] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:01:06,950 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:01:06,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 11 [2022-11-20 12:01:06,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518181164] [2022-11-20 12:01:06,951 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:01:06,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 12:01:06,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:01:06,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 12:01:06,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:01:06,952 INFO L87 Difference]: Start difference. First operand 104 states and 240 transitions. Second operand has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states 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 12:01:08,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:01:08,573 INFO L93 Difference]: Finished difference Result 174 states and 405 transitions. [2022-11-20 12:01:08,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:01:08,575 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-20 12:01:08,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:01:08,576 INFO L225 Difference]: With dead ends: 174 [2022-11-20 12:01:08,576 INFO L226 Difference]: Without dead ends: 143 [2022-11-20 12:01:08,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2022-11-20 12:01:08,578 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 180 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:01:08,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 282 Invalid, 0 Unknown, 180 Unchecked, 0.9s Time] [2022-11-20 12:01:08,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-11-20 12:01:08,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 84. [2022-11-20 12:01:08,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 82 states have (on average 2.158536585365854) internal successors, (177), 83 states have internal predecessors, (177), 0 states have call successors, (0), 0 states 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 12:01:08,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 177 transitions. [2022-11-20 12:01:08,583 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 177 transitions. Word has length 18 [2022-11-20 12:01:08,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:01:08,583 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 177 transitions. [2022-11-20 12:01:08,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states 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 12:01:08,583 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 177 transitions. [2022-11-20 12:01:08,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 12:01:08,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:01:08,584 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:08,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (31)] Forceful destruction successful, exit code 0 [2022-11-20 12:01:08,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:01:08,795 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 12:01:08,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:08,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1653028339, now seen corresponding path program 5 times [2022-11-20 12:01:08,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:01:08,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [91893849] [2022-11-20 12:01:08,796 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 12:01:08,797 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 12:01:08,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:01:08,798 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:01:08,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (32)] Waiting until timeout for monitored process [2022-11-20 12:01:09,009 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-20 12:01:09,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:01:09,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:01:09,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:01:09,063 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 12:01:09,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:01:09,283 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 12:01:09,283 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:01:09,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [91893849] [2022-11-20 12:01:09,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [91893849] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:01:09,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:01:09,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 9 [2022-11-20 12:01:09,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564713731] [2022-11-20 12:01:09,284 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:01:09,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:01:09,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:01:09,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:01:09,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:01:09,285 INFO L87 Difference]: Start difference. First operand 84 states and 177 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:09,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:01:09,647 INFO L93 Difference]: Finished difference Result 166 states and 347 transitions. [2022-11-20 12:01:09,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:01:09,648 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-20 12:01:09,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:01:09,649 INFO L225 Difference]: With dead ends: 166 [2022-11-20 12:01:09,649 INFO L226 Difference]: Without dead ends: 152 [2022-11-20 12:01:09,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:01:09,650 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 70 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:01:09,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 0 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:01:09,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-20 12:01:09,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 128. [2022-11-20 12:01:09,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 126 states have (on average 2.2857142857142856) internal successors, (288), 127 states have internal predecessors, (288), 0 states have call successors, (0), 0 states 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 12:01:09,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 288 transitions. [2022-11-20 12:01:09,657 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 288 transitions. Word has length 19 [2022-11-20 12:01:09,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:01:09,657 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 288 transitions. [2022-11-20 12:01:09,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:09,658 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 288 transitions. [2022-11-20 12:01:09,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 12:01:09,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:01:09,659 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:09,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (32)] Ended with exit code 0 [2022-11-20 12:01:09,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:01:09,880 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 12:01:09,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:09,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1485905203, now seen corresponding path program 6 times [2022-11-20 12:01:09,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:01:09,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [989402027] [2022-11-20 12:01:09,881 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 12:01:09,882 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 12:01:09,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:01:09,884 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:01:09,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (33)] Waiting until timeout for monitored process [2022-11-20 12:01:10,224 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-20 12:01:10,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:01:10,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 12:01:10,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:01:10,344 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 12:01:10,344 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-20 12:01:10,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-20 12:01:10,722 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:01:10,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:01:11,804 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:01:11,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:01:11,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [989402027] [2022-11-20 12:01:11,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [989402027] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:01:11,805 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:01:11,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 12:01:11,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072949875] [2022-11-20 12:01:11,805 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:01:11,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:01:11,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:01:11,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:01:11,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:01:11,806 INFO L87 Difference]: Start difference. First operand 128 states and 288 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:15,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:01:16,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:01:17,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:01:17,557 INFO L93 Difference]: Finished difference Result 151 states and 321 transitions. [2022-11-20 12:01:17,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:01:17,559 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-20 12:01:17,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:01:17,560 INFO L225 Difference]: With dead ends: 151 [2022-11-20 12:01:17,561 INFO L226 Difference]: Without dead ends: 128 [2022-11-20 12:01:17,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:01:17,562 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 49 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:01:17,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 0 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-20 12:01:17,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-20 12:01:17,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2022-11-20 12:01:17,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 126 states have (on average 2.2777777777777777) internal successors, (287), 127 states have internal predecessors, (287), 0 states have call successors, (0), 0 states 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 12:01:17,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 287 transitions. [2022-11-20 12:01:17,568 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 287 transitions. Word has length 20 [2022-11-20 12:01:17,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:01:17,568 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 287 transitions. [2022-11-20 12:01:17,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:17,568 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 287 transitions. [2022-11-20 12:01:17,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-20 12:01:17,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:01:17,569 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:17,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (33)] Forceful destruction successful, exit code 0 [2022-11-20 12:01:17,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:01:17,787 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 12:01:17,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:17,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1841223179, now seen corresponding path program 7 times [2022-11-20 12:01:17,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:01:17,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361657807] [2022-11-20 12:01:17,788 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 12:01:17,788 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 12:01:17,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:01:17,789 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:01:17,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (34)] Waiting until timeout for monitored process [2022-11-20 12:01:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:18,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 12:01:18,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:01:18,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2022-11-20 12:01:18,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:01:18,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2022-11-20 12:01:18,869 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:01:18,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 19 [2022-11-20 12:01:18,977 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:01:18,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:01:19,427 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_771 (Array (_ BitVec 32) (_ BitVec 8)))) (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_771) c_~queue~0.base)) (.cse1 (bvmul (_ bv4 32) c_~front~0))) (concat (concat (concat (select .cse0 (bvadd c_~queue~0.offset (_ bv11 32) .cse1)) (select .cse0 (bvadd c_~queue~0.offset .cse1 (_ bv10 32)))) (select .cse0 (bvadd c_~queue~0.offset .cse1 (_ bv9 32)))) (select .cse0 (bvadd c_~queue~0.offset (_ bv8 32) .cse1)))) (_ bv5 32))) is different from false [2022-11-20 12:01:20,689 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-20 12:01:20,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 500 treesize of output 420 [2022-11-20 12:01:20,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 310 treesize of output 198 [2022-11-20 12:01:20,912 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-20 12:01:20,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 268 treesize of output 212 [2022-11-20 12:01:22,823 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 3 not checked. [2022-11-20 12:01:22,823 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:01:22,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361657807] [2022-11-20 12:01:22,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361657807] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:01:22,824 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:01:22,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 20 [2022-11-20 12:01:22,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627567362] [2022-11-20 12:01:22,824 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:01:22,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 12:01:22,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:01:22,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 12:01:22,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=364, Unknown=1, NotChecked=38, Total=462 [2022-11-20 12:01:22,825 INFO L87 Difference]: Start difference. First operand 128 states and 287 transitions. Second operand has 22 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 12:01:26,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:01:26,091 INFO L93 Difference]: Finished difference Result 218 states and 495 transitions. [2022-11-20 12:01:26,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 12:01:26,093 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 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 21 [2022-11-20 12:01:26,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:01:26,095 INFO L225 Difference]: With dead ends: 218 [2022-11-20 12:01:26,095 INFO L226 Difference]: Without dead ends: 211 [2022-11-20 12:01:26,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 21 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=156, Invalid=969, Unknown=1, NotChecked=64, Total=1190 [2022-11-20 12:01:26,097 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 102 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 290 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:01:26,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 0 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 436 Invalid, 0 Unknown, 290 Unchecked, 1.3s Time] [2022-11-20 12:01:26,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-11-20 12:01:26,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 134. [2022-11-20 12:01:26,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 132 states have (on average 2.2803030303030303) internal successors, (301), 133 states have internal predecessors, (301), 0 states have call successors, (0), 0 states 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 12:01:26,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 301 transitions. [2022-11-20 12:01:26,104 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 301 transitions. Word has length 21 [2022-11-20 12:01:26,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:01:26,104 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 301 transitions. [2022-11-20 12:01:26,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 12:01:26,105 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 301 transitions. [2022-11-20 12:01:26,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-20 12:01:26,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:01:26,106 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:26,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (34)] Forceful destruction successful, exit code 0 [2022-11-20 12:01:26,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:01:26,319 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 12:01:26,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:26,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1597387815, now seen corresponding path program 8 times [2022-11-20 12:01:26,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:01:26,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1706096666] [2022-11-20 12:01:26,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:01:26,320 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 12:01:26,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:01:26,321 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:01:26,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (35)] Waiting until timeout for monitored process [2022-11-20 12:01:26,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:01:26,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:01:26,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 12:01:26,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:01:27,002 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:01:27,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 19 [2022-11-20 12:01:27,100 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:01:27,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:01:27,321 INFO L321 Elim1Store]: treesize reduction 168, result has 2.9 percent of original size [2022-11-20 12:01:27,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 102 treesize of output 25 [2022-11-20 12:01:27,476 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 12:01:27,476 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:01:27,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1706096666] [2022-11-20 12:01:27,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1706096666] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:01:27,477 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:01:27,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 15 [2022-11-20 12:01:27,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342177261] [2022-11-20 12:01:27,477 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:01:27,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 12:01:27,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:01:27,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 12:01:27,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:01:27,478 INFO L87 Difference]: Start difference. First operand 134 states and 301 transitions. Second operand has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 12:01:30,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:01:30,726 INFO L93 Difference]: Finished difference Result 411 states and 892 transitions. [2022-11-20 12:01:30,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 12:01:30,727 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 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 21 [2022-11-20 12:01:30,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:01:30,728 INFO L225 Difference]: With dead ends: 411 [2022-11-20 12:01:30,729 INFO L226 Difference]: Without dead ends: 346 [2022-11-20 12:01:30,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=136, Invalid=856, Unknown=0, NotChecked=0, Total=992 [2022-11-20 12:01:30,730 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 110 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 271 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:01:30,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 0 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 913 Invalid, 0 Unknown, 271 Unchecked, 2.0s Time] [2022-11-20 12:01:30,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-11-20 12:01:30,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 148. [2022-11-20 12:01:30,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 146 states have (on average 2.3972602739726026) internal successors, (350), 147 states have internal predecessors, (350), 0 states have call successors, (0), 0 states 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 12:01:30,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 350 transitions. [2022-11-20 12:01:30,738 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 350 transitions. Word has length 21 [2022-11-20 12:01:30,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:01:30,739 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 350 transitions. [2022-11-20 12:01:30,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 12:01:30,739 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 350 transitions. [2022-11-20 12:01:30,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-20 12:01:30,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:01:30,740 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:30,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (35)] Forceful destruction successful, exit code 0 [2022-11-20 12:01:30,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:01:30,955 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 12:01:30,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:30,955 INFO L85 PathProgramCache]: Analyzing trace with hash -2143120721, now seen corresponding path program 9 times [2022-11-20 12:01:30,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:01:30,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656963111] [2022-11-20 12:01:30,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:01:30,956 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:01:30,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:01:30,957 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:01:30,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (36)] Waiting until timeout for monitored process [2022-11-20 12:01:31,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 12:01:31,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:01:31,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 12:01:31,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:01:31,628 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:01:31,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 19 [2022-11-20 12:01:31,725 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:01:31,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:01:32,032 INFO L321 Elim1Store]: treesize reduction 156, result has 3.1 percent of original size [2022-11-20 12:01:32,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 103 treesize of output 25 [2022-11-20 12:01:32,209 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 12:01:32,209 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:01:32,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656963111] [2022-11-20 12:01:32,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [656963111] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:01:32,209 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:01:32,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 16 [2022-11-20 12:01:32,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254250454] [2022-11-20 12:01:32,210 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:01:32,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:01:32,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:01:32,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:01:32,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:01:32,211 INFO L87 Difference]: Start difference. First operand 148 states and 350 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 12:01:36,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:01:38,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:01:42,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:01:42,402 INFO L93 Difference]: Finished difference Result 446 states and 992 transitions. [2022-11-20 12:01:42,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-20 12:01:42,403 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 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 21 [2022-11-20 12:01:42,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:01:42,406 INFO L225 Difference]: With dead ends: 446 [2022-11-20 12:01:42,406 INFO L226 Difference]: Without dead ends: 303 [2022-11-20 12:01:42,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 25 SyntacticMatches, 6 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=355, Invalid=2297, Unknown=0, NotChecked=0, Total=2652 [2022-11-20 12:01:42,408 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 153 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:01:42,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 0 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1099 Invalid, 2 Unknown, 8 Unchecked, 6.7s Time] [2022-11-20 12:01:42,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-11-20 12:01:42,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 86. [2022-11-20 12:01:42,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 84 states have (on average 2.119047619047619) internal successors, (178), 85 states have internal predecessors, (178), 0 states have call successors, (0), 0 states 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 12:01:42,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 178 transitions. [2022-11-20 12:01:42,413 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 178 transitions. Word has length 21 [2022-11-20 12:01:42,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:01:42,414 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 178 transitions. [2022-11-20 12:01:42,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 12:01:42,414 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 178 transitions. [2022-11-20 12:01:42,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 12:01:42,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:01:42,415 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:42,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (36)] Forceful destruction successful, exit code 0 [2022-11-20 12:01:42,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:01:42,636 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 12:01:42,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:42,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1933415554, now seen corresponding path program 10 times [2022-11-20 12:01:42,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:01:42,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643042684] [2022-11-20 12:01:42,637 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:01:42,637 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:01:42,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:01:42,638 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:01:42,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (37)] Waiting until timeout for monitored process [2022-11-20 12:01:42,824 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:01:42,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:01:42,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:01:42,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:01:42,896 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:01:42,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:01:43,026 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:01:43,026 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:01:43,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643042684] [2022-11-20 12:01:43,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643042684] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:01:43,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:01:43,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-20 12:01:43,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145713172] [2022-11-20 12:01:43,027 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:01:43,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:01:43,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:01:43,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:01:43,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:01:43,028 INFO L87 Difference]: Start difference. First operand 86 states and 178 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:43,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:01:43,555 INFO L93 Difference]: Finished difference Result 206 states and 434 transitions. [2022-11-20 12:01:43,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:01:43,556 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-20 12:01:43,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:01:43,558 INFO L225 Difference]: With dead ends: 206 [2022-11-20 12:01:43,558 INFO L226 Difference]: Without dead ends: 188 [2022-11-20 12:01:43,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:01:43,559 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 81 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:01:43,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 0 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:01:43,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-20 12:01:43,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 156. [2022-11-20 12:01:43,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 154 states have (on average 2.324675324675325) internal successors, (358), 155 states have internal predecessors, (358), 0 states have call successors, (0), 0 states 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 12:01:43,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 358 transitions. [2022-11-20 12:01:43,564 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 358 transitions. Word has length 22 [2022-11-20 12:01:43,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:01:43,564 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 358 transitions. [2022-11-20 12:01:43,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:43,564 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 358 transitions. [2022-11-20 12:01:43,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 12:01:43,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:01:43,565 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:43,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (37)] Forceful destruction successful, exit code 0 [2022-11-20 12:01:43,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:01:43,766 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 12:01:43,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:43,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1528565484, now seen corresponding path program 11 times [2022-11-20 12:01:43,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:01:43,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [313070867] [2022-11-20 12:01:43,767 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 12:01:43,767 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 12:01:43,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:01:43,769 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:01:43,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (38)] Waiting until timeout for monitored process [2022-11-20 12:01:44,127 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-20 12:01:44,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:01:44,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 12:01:44,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:01:44,252 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 12:01:44,253 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-20 12:01:44,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2022-11-20 12:01:44,859 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 12:01:44,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:01:46,320 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 12:01:46,320 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:01:46,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [313070867] [2022-11-20 12:01:46,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [313070867] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:01:46,320 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:01:46,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-20 12:01:46,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17659674] [2022-11-20 12:01:46,321 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:01:46,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:01:46,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:01:46,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:01:46,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:01:46,322 INFO L87 Difference]: Start difference. First operand 156 states and 358 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:47,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:01:47,364 INFO L93 Difference]: Finished difference Result 303 states and 633 transitions. [2022-11-20 12:01:47,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:01:47,365 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-20 12:01:47,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:01:47,366 INFO L225 Difference]: With dead ends: 303 [2022-11-20 12:01:47,366 INFO L226 Difference]: Without dead ends: 156 [2022-11-20 12:01:47,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-11-20 12:01:47,367 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 70 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:01:47,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 0 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 12:01:47,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-11-20 12:01:47,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2022-11-20 12:01:47,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 154 states have (on average 2.3181818181818183) internal successors, (357), 155 states have internal predecessors, (357), 0 states have call successors, (0), 0 states 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 12:01:47,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 357 transitions. [2022-11-20 12:01:47,372 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 357 transitions. Word has length 23 [2022-11-20 12:01:47,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:01:47,372 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 357 transitions. [2022-11-20 12:01:47,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:47,373 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 357 transitions. [2022-11-20 12:01:47,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 12:01:47,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:01:47,374 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1] [2022-11-20 12:01:47,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (38)] Ended with exit code 0 [2022-11-20 12:01:47,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:01:47,588 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 12:01:47,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:47,588 INFO L85 PathProgramCache]: Analyzing trace with hash -226754348, now seen corresponding path program 4 times [2022-11-20 12:01:47,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:01:47,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521593136] [2022-11-20 12:01:47,589 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:01:47,589 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 12:01:47,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:01:47,590 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:01:47,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (39)] Waiting until timeout for monitored process [2022-11-20 12:01:47,813 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:01:47,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:01:47,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-20 12:01:47,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:01:47,895 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 12:01:47,895 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-20 12:01:49,587 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:49,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:02:03,974 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:02:03,974 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:02:03,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521593136] [2022-11-20 12:02:03,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521593136] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:02:03,974 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:02:03,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 46 [2022-11-20 12:02:03,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810897488] [2022-11-20 12:02:03,975 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:02:03,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-20 12:02:03,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:02:03,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-20 12:02:03,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2022-11-20 12:02:03,977 INFO L87 Difference]: Start difference. First operand 156 states and 357 transitions. Second operand has 48 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:02:33,573 WARN L233 SmtUtils]: Spent 20.97s on a formula simplification that was a NOOP. DAG size: 254 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:02:51,677 WARN L233 SmtUtils]: Spent 16.35s on a formula simplification that was a NOOP. DAG size: 243 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:03:12,639 WARN L233 SmtUtils]: Spent 19.18s on a formula simplification that was a NOOP. DAG size: 232 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:03:26,344 WARN L233 SmtUtils]: Spent 11.64s on a formula simplification that was a NOOP. DAG size: 222 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:03:40,460 WARN L233 SmtUtils]: Spent 12.43s on a formula simplification that was a NOOP. DAG size: 211 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:03:52,876 WARN L233 SmtUtils]: Spent 10.51s on a formula simplification that was a NOOP. DAG size: 200 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:04:01,072 WARN L233 SmtUtils]: Spent 6.30s on a formula simplification that was a NOOP. DAG size: 189 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:04:09,150 WARN L233 SmtUtils]: Spent 5.93s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:04:16,298 WARN L233 SmtUtils]: Spent 5.32s on a formula simplification that was a NOOP. DAG size: 168 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:05:02,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:02,991 INFO L93 Difference]: Finished difference Result 5551 states and 13238 transitions. [2022-11-20 12:05:02,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-20 12:05:02,992 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-20 12:05:02,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:03,014 INFO L225 Difference]: With dead ends: 5551 [2022-11-20 12:05:03,014 INFO L226 Difference]: Without dead ends: 5551 [2022-11-20 12:05:03,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 167.8s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2022-11-20 12:05:03,017 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 7670 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6567 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7670 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 6567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:03,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7670 Valid, 0 Invalid, 6613 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 6567 Invalid, 0 Unknown, 0 Unchecked, 25.2s Time] [2022-11-20 12:05:03,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5551 states. [2022-11-20 12:05:03,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5551 to 180. [2022-11-20 12:05:03,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 178 states have (on average 2.2752808988764044) internal successors, (405), 179 states have internal predecessors, (405), 0 states have call successors, (0), 0 states 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 12:05:03,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 405 transitions. [2022-11-20 12:05:03,084 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 405 transitions. Word has length 24 [2022-11-20 12:05:03,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:03,085 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 405 transitions. [2022-11-20 12:05:03,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:05:03,085 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 405 transitions. [2022-11-20 12:05:03,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 12:05:03,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:03,086 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:03,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (39)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:03,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:05:03,304 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 12:05:03,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:03,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1992772886, now seen corresponding path program 12 times [2022-11-20 12:05:03,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:05:03,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148065767] [2022-11-20 12:05:03,305 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 12:05:03,305 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:05:03,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:05:03,307 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:05:03,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (40)] Waiting until timeout for monitored process [2022-11-20 12:05:03,704 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-20 12:05:03,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:05:03,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-20 12:05:03,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:03,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-20 12:05:04,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2022-11-20 12:05:04,797 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:05:04,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 19 [2022-11-20 12:05:04,902 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:05:04,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:05:05,517 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1076 (Array (_ BitVec 32) (_ BitVec 8)))) (= (_ bv5 32) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1076) c_~queue~0.base)) (.cse1 (bvmul (_ bv4 32) c_~front~0))) (concat (concat (concat (select .cse0 (bvadd c_~queue~0.offset .cse1 (_ bv15 32))) (select .cse0 (bvadd c_~queue~0.offset (_ bv14 32) .cse1))) (select .cse0 (bvadd c_~queue~0.offset (_ bv13 32) .cse1))) (select .cse0 (bvadd c_~queue~0.offset .cse1 (_ bv12 32))))))) is different from false [2022-11-20 12:05:05,704 INFO L321 Elim1Store]: treesize reduction 120, result has 25.5 percent of original size [2022-11-20 12:05:05,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 149 treesize of output 106 [2022-11-20 12:05:05,712 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:05:05,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 9 [2022-11-20 12:05:08,435 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-11-20 12:05:08,436 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:05:08,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148065767] [2022-11-20 12:05:08,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1148065767] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:05:08,436 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:05:08,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2022-11-20 12:05:08,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59252971] [2022-11-20 12:05:08,436 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:05:08,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 12:05:08,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:05:08,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 12:05:08,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=829, Unknown=1, NotChecked=58, Total=992 [2022-11-20 12:05:08,437 INFO L87 Difference]: Start difference. First operand 180 states and 405 transitions. Second operand has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:05:17,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:05:21,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:05:23,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:05:30,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:05:32,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:05:34,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:05:36,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:05:38,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:05:49,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:05:50,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:05:52,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:05:53,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:05:56,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:05:59,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:06:01,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:06:02,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:06:03,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:06:06,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:06:16,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:06:18,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:06:20,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:06:22,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:06:24,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:06:35,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:06:37,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:06:39,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:06:40,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:06:42,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:06:51,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:06:58,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:06:59,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:07:01,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:07:03,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:07:04,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:07:07,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:07:09,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:07:11,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:07:13,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:07:15,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:07:16,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:07:17,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:07:19,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:07:22,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:07:25,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:07:35,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:07:37,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:07:40,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:07:47,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:07:52,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:07:54,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:07:56,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:07:58,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:08:00,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:08:07,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:08:08,047 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse7 (bvadd c_~size~0 c_~front~0 (_ bv1 32)))) (let ((.cse2 (not (bvsge .cse7 (_ bv0 32)))) (.cse3 (and (= (bvmul (_ bv4 32) c_~size~0) (_ bv0 32)) (not (= |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|)))) (.cse4 (not (bvslt (bvadd c_~size~0 (_ bv2 32) c_~front~0) c_~n~0))) (.cse5 (not (bvslt .cse7 c_~n~0)))) (and (forall ((v_ArrVal_1076 (Array (_ BitVec 32) (_ BitVec 8)))) (= (_ bv5 32) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1076) c_~queue~0.base)) (.cse1 (bvmul (_ bv4 32) c_~front~0))) (concat (concat (concat (select .cse0 (bvadd c_~queue~0.offset .cse1 (_ bv15 32))) (select .cse0 (bvadd c_~queue~0.offset (_ bv14 32) .cse1))) (select .cse0 (bvadd c_~queue~0.offset (_ bv13 32) .cse1))) (select .cse0 (bvadd c_~queue~0.offset .cse1 (_ bv12 32))))))) (or .cse2 (bvslt (bvadd (_ bv2 32) |c_ULTIMATE.start_create_fresh_int_array_~i~0#1|) |c_ULTIMATE.start_create_fresh_int_array_~size#1|) .cse3 .cse4 .cse5) (or .cse2 .cse3 (bvslt (bvadd (_ bv4 32) |c_ULTIMATE.start_create_fresh_int_array_~i~0#1|) |c_ULTIMATE.start_create_fresh_int_array_~size#1|) .cse4 .cse5) (or .cse2 .cse3 .cse4 (bvslt |c_ULTIMATE.start_create_fresh_int_array_~i~0#1| |c_ULTIMATE.start_create_fresh_int_array_~size#1|) .cse5) (or .cse2 .cse3 .cse4 (bvslt (bvadd |c_ULTIMATE.start_create_fresh_int_array_~i~0#1| (_ bv1 32)) |c_ULTIMATE.start_create_fresh_int_array_~size#1|) .cse5) (= c_~x~0 (_ bv5 32)) (or .cse2 .cse3 .cse4 (bvslt (bvadd (_ bv3 32) |c_ULTIMATE.start_create_fresh_int_array_~i~0#1|) |c_ULTIMATE.start_create_fresh_int_array_~size#1|) .cse5) (exists ((v_arrayElimCell_113 (_ BitVec 8)) (v_arrayElimCell_112 (_ BitVec 8)) (v_arrayElimCell_111 (_ BitVec 8)) (v_arrayElimCell_110 (_ BitVec 8))) (let ((.cse6 (concat (concat (concat v_arrayElimCell_112 v_arrayElimCell_110) v_arrayElimCell_111) v_arrayElimCell_113))) (and (= c_~x~0 .cse6) (= .cse6 (_ bv5 32)))))))) is different from false [2022-11-20 12:08:20,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:08:22,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:08:25,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:08:27,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:08:32,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:08:33,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:08:35,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:08:36,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:08:38,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:08:40,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:08:43,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:09:04,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:09:17,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:09:18,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:09:20,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:09:23,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:09:28,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:09:31,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:09:44,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:09:46,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:09:48,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:09:50,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:10:00,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:10:02,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:10:04,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:10:05,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:10:06,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:10:09,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:10:13,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:10:15,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:10:17,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:10:19,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:10:23,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:10:29,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:10:35,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:10:38,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:10:41,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:10:44,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:10:46,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:10:48,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:10:50,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:10:54,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:11:00,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:11:05,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:11:07,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:11:09,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:11:16,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:11:25,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:11:41,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:41,128 INFO L93 Difference]: Finished difference Result 2067 states and 4667 transitions. [2022-11-20 12:11:41,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-11-20 12:11:41,131 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-20 12:11:41,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:41,136 INFO L225 Difference]: With dead ends: 2067 [2022-11-20 12:11:41,136 INFO L226 Difference]: Without dead ends: 1744 [2022-11-20 12:11:41,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 22 SyntacticMatches, 39 SemanticMatches, 170 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 12937 ImplicationChecksByTransitivity, 146.5s TimeCoverageRelationStatistics Valid=3672, Invalid=25055, Unknown=11, NotChecked=674, Total=29412 [2022-11-20 12:11:41,142 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 994 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5497 mSolverCounterSat, 274 mSolverCounterUnsat, 68 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 245.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 5497 IncrementalHoareTripleChecker+Invalid, 68 IncrementalHoareTripleChecker+Unknown, 1122 IncrementalHoareTripleChecker+Unchecked, 249.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:41,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 0 Invalid, 6961 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [274 Valid, 5497 Invalid, 68 Unknown, 1122 Unchecked, 249.0s Time] [2022-11-20 12:11:41,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2022-11-20 12:11:41,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 543. [2022-11-20 12:11:41,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 541 states have (on average 2.78003696857671) internal successors, (1504), 542 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states 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 12:11:41,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 1504 transitions. [2022-11-20 12:11:41,176 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 1504 transitions. Word has length 24 [2022-11-20 12:11:41,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:41,176 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 1504 transitions. [2022-11-20 12:11:41,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:41,176 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 1504 transitions. [2022-11-20 12:11:41,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 12:11:41,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:41,178 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:41,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (40)] Forceful destruction successful, exit code 0 [2022-11-20 12:11:41,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:11:41,379 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 12:11:41,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:41,380 INFO L85 PathProgramCache]: Analyzing trace with hash 823563520, now seen corresponding path program 13 times [2022-11-20 12:11:41,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:41,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1726128761] [2022-11-20 12:11:41,381 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 12:11:41,381 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 12:11:41,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:41,382 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:11:41,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (41)] Waiting until timeout for monitored process [2022-11-20 12:11:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:41,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 12:11:41,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:42,344 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:11:42,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 19 [2022-11-20 12:11:42,476 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:11:42,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:11:42,719 INFO L321 Elim1Store]: treesize reduction 168, result has 2.9 percent of original size [2022-11-20 12:11:42,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 102 treesize of output 25 [2022-11-20 12:11:42,970 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 12:11:42,970 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:42,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1726128761] [2022-11-20 12:11:42,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1726128761] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:11:42,971 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:11:42,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6] total 19 [2022-11-20 12:11:42,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34317420] [2022-11-20 12:11:42,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:11:42,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 12:11:42,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:42,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 12:11:42,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2022-11-20 12:11:42,973 INFO L87 Difference]: Start difference. First operand 543 states and 1504 transitions. Second operand has 21 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:47,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:47,728 INFO L93 Difference]: Finished difference Result 884 states and 2256 transitions. [2022-11-20 12:11:47,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 12:11:47,730 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-20 12:11:47,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:47,733 INFO L225 Difference]: With dead ends: 884 [2022-11-20 12:11:47,733 INFO L226 Difference]: Without dead ends: 847 [2022-11-20 12:11:47,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=165, Invalid=1395, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 12:11:47,734 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 129 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 246 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:47,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 0 Invalid, 1717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1469 Invalid, 0 Unknown, 246 Unchecked, 3.4s Time] [2022-11-20 12:11:47,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-11-20 12:11:47,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 573. [2022-11-20 12:11:47,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 571 states have (on average 2.816112084063047) internal successors, (1608), 572 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states 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 12:11:47,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 1608 transitions. [2022-11-20 12:11:47,756 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 1608 transitions. Word has length 24 [2022-11-20 12:11:47,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:47,756 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 1608 transitions. [2022-11-20 12:11:47,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:47,756 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 1608 transitions. [2022-11-20 12:11:47,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 12:11:47,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:47,759 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:47,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (41)] Forceful destruction successful, exit code 0 [2022-11-20 12:11:47,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:11:47,976 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 12:11:47,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:47,977 INFO L85 PathProgramCache]: Analyzing trace with hash 277830614, now seen corresponding path program 14 times [2022-11-20 12:11:47,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:11:47,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346925318] [2022-11-20 12:11:47,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:11:47,977 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:11:47,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:11:47,978 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:11:47,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (42)] Waiting until timeout for monitored process [2022-11-20 12:11:48,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:11:48,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:11:48,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 12:11:48,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:48,899 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:11:48,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 19 [2022-11-20 12:11:49,025 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:11:49,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:11:49,397 INFO L321 Elim1Store]: treesize reduction 156, result has 3.1 percent of original size [2022-11-20 12:11:49,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 103 treesize of output 25 [2022-11-20 12:11:49,678 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 12:11:49,678 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:11:49,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346925318] [2022-11-20 12:11:49,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346925318] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:11:49,679 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:11:49,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7] total 20 [2022-11-20 12:11:49,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661590329] [2022-11-20 12:11:49,679 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:11:49,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 12:11:49,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:49,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 12:11:49,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:11:49,681 INFO L87 Difference]: Start difference. First operand 573 states and 1608 transitions. Second operand has 22 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:54,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:11:57,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:12:05,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:05,593 INFO L93 Difference]: Finished difference Result 1749 states and 4503 transitions. [2022-11-20 12:12:05,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-20 12:12:05,594 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-20 12:12:05,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:05,601 INFO L225 Difference]: With dead ends: 1749 [2022-11-20 12:12:05,601 INFO L226 Difference]: Without dead ends: 1586 [2022-11-20 12:12:05,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 27 SyntacticMatches, 8 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1400 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=471, Invalid=4359, Unknown=0, NotChecked=0, Total=4830 [2022-11-20 12:12:05,603 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 241 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2104 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2104 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:05,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 0 Invalid, 2121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 2104 Invalid, 2 Unknown, 9 Unchecked, 9.9s Time] [2022-11-20 12:12:05,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2022-11-20 12:12:05,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 671. [2022-11-20 12:12:05,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 669 states have (on average 2.899850523168909) internal successors, (1940), 670 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states 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 12:12:05,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1940 transitions. [2022-11-20 12:12:05,631 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1940 transitions. Word has length 24 [2022-11-20 12:12:05,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:05,632 INFO L495 AbstractCegarLoop]: Abstraction has 671 states and 1940 transitions. [2022-11-20 12:12:05,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:05,632 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1940 transitions. [2022-11-20 12:12:05,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 12:12:05,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:05,635 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:05,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (42)] Forceful destruction successful, exit code 0 [2022-11-20 12:12:05,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:12:05,853 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 12:12:05,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:05,854 INFO L85 PathProgramCache]: Analyzing trace with hash 539979712, now seen corresponding path program 15 times [2022-11-20 12:12:05,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:12:05,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044136959] [2022-11-20 12:12:05,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:12:05,854 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 12:12:05,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:12:05,855 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:12:05,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (43)] Waiting until timeout for monitored process [2022-11-20 12:12:06,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 12:12:06,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:12:06,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 12:12:06,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:06,727 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:12:06,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 19 [2022-11-20 12:12:06,830 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 12:12:06,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:12:07,280 INFO L321 Elim1Store]: treesize reduction 156, result has 3.1 percent of original size [2022-11-20 12:12:07,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 103 treesize of output 25 [2022-11-20 12:12:07,559 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 12:12:07,560 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:12:07,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044136959] [2022-11-20 12:12:07,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044136959] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:12:07,560 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:12:07,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 18 [2022-11-20 12:12:07,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525513451] [2022-11-20 12:12:07,560 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:12:07,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 12:12:07,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:12:07,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 12:12:07,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:12:07,562 INFO L87 Difference]: Start difference. First operand 671 states and 1940 transitions. Second operand has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:13,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:12:15,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:12:17,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:12:19,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:12:22,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:12:35,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:35,464 INFO L93 Difference]: Finished difference Result 2034 states and 5237 transitions. [2022-11-20 12:12:35,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-11-20 12:12:35,465 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-20 12:12:35,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:35,474 INFO L225 Difference]: With dead ends: 2034 [2022-11-20 12:12:35,475 INFO L226 Difference]: Without dead ends: 1671 [2022-11-20 12:12:35,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 31 SyntacticMatches, 13 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 3118 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=906, Invalid=7466, Unknown=0, NotChecked=0, Total=8372 [2022-11-20 12:12:35,478 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 237 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2453 mSolverCounterSat, 11 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2453 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:35,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 0 Invalid, 2488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2453 Invalid, 5 Unknown, 19 Unchecked, 17.1s Time] [2022-11-20 12:12:35,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1671 states. [2022-11-20 12:12:35,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1671 to 507. [2022-11-20 12:12:35,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 505 states have (on average 2.6831683168316833) internal successors, (1355), 506 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states 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 12:12:35,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 1355 transitions. [2022-11-20 12:12:35,504 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 1355 transitions. Word has length 24 [2022-11-20 12:12:35,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:35,505 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 1355 transitions. [2022-11-20 12:12:35,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:35,505 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 1355 transitions. [2022-11-20 12:12:35,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:12:35,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:35,507 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:35,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (43)] Forceful destruction successful, exit code 0 [2022-11-20 12:12:35,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:12:35,725 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 12:12:35,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:35,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1530341933, now seen corresponding path program 16 times [2022-11-20 12:12:35,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:12:35,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1017325380] [2022-11-20 12:12:35,726 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:12:35,726 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 12:12:35,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:12:35,727 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:12:35,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (44)] Waiting until timeout for monitored process [2022-11-20 12:12:35,999 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:12:35,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:12:36,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:12:36,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:36,104 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 12:12:36,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:12:36,323 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 12:12:36,324 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:12:36,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1017325380] [2022-11-20 12:12:36,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1017325380] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:12:36,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:12:36,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-11-20 12:12:36,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996558315] [2022-11-20 12:12:36,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:12:36,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:12:36,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:12:36,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:12:36,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:12:36,326 INFO L87 Difference]: Start difference. First operand 507 states and 1355 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:37,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:37,079 INFO L93 Difference]: Finished difference Result 712 states and 1825 transitions. [2022-11-20 12:12:37,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:12:37,081 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 12:12:37,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:37,084 INFO L225 Difference]: With dead ends: 712 [2022-11-20 12:12:37,084 INFO L226 Difference]: Without dead ends: 690 [2022-11-20 12:12:37,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:12:37,085 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 138 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:37,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 0 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 12:12:37,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-11-20 12:12:37,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 630. [2022-11-20 12:12:37,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 628 states have (on average 2.694267515923567) internal successors, (1692), 629 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states 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 12:12:37,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 1692 transitions. [2022-11-20 12:12:37,105 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 1692 transitions. Word has length 25 [2022-11-20 12:12:37,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:37,105 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 1692 transitions. [2022-11-20 12:12:37,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:37,106 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1692 transitions. [2022-11-20 12:12:37,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:12:37,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:37,108 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:37,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (44)] Forceful destruction successful, exit code 0 [2022-11-20 12:12:37,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:12:37,325 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 12:12:37,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:37,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1424549262, now seen corresponding path program 17 times [2022-11-20 12:12:37,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:12:37,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385697279] [2022-11-20 12:12:37,326 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 12:12:37,326 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:12:37,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:12:37,327 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:12:37,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (45)] Waiting until timeout for monitored process [2022-11-20 12:12:37,875 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-20 12:12:37,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:12:37,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 12:12:37,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:38,282 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:12:38,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 19 [2022-11-20 12:12:38,389 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 12:12:38,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:12:38,620 INFO L321 Elim1Store]: treesize reduction 168, result has 2.9 percent of original size [2022-11-20 12:12:38,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 102 treesize of output 25 [2022-11-20 12:12:39,415 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 12:12:39,416 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:12:39,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385697279] [2022-11-20 12:12:39,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385697279] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:12:39,416 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:12:39,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 19 [2022-11-20 12:12:39,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347149799] [2022-11-20 12:12:39,416 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:12:39,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 12:12:39,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:12:39,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 12:12:39,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-11-20 12:12:39,418 INFO L87 Difference]: Start difference. First operand 630 states and 1692 transitions. Second operand has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:46,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:46,790 INFO L93 Difference]: Finished difference Result 934 states and 2350 transitions. [2022-11-20 12:12:46,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-20 12:12:46,791 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 12:12:46,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:46,795 INFO L225 Difference]: With dead ends: 934 [2022-11-20 12:12:46,795 INFO L226 Difference]: Without dead ends: 842 [2022-11-20 12:12:46,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 29 SyntacticMatches, 7 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=401, Invalid=2049, Unknown=0, NotChecked=0, Total=2450 [2022-11-20 12:12:46,796 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 180 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:46,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 0 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 825 Invalid, 0 Unknown, 52 Unchecked, 3.1s Time] [2022-11-20 12:12:46,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-11-20 12:12:46,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 550. [2022-11-20 12:12:46,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 548 states have (on average 2.6806569343065694) internal successors, (1469), 549 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states 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 12:12:46,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 1469 transitions. [2022-11-20 12:12:46,814 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 1469 transitions. Word has length 25 [2022-11-20 12:12:46,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:46,815 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 1469 transitions. [2022-11-20 12:12:46,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:46,815 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 1469 transitions. [2022-11-20 12:12:46,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:12:46,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:46,817 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:46,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (45)] Forceful destruction successful, exit code 0 [2022-11-20 12:12:47,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:12:47,037 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-20 12:12:47,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:47,037 INFO L85 PathProgramCache]: Analyzing trace with hash -503863810, now seen corresponding path program 18 times [2022-11-20 12:12:47,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:12:47,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [611480765] [2022-11-20 12:12:47,038 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 12:12:47,038 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 12:12:47,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:12:47,039 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 12:12:47,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82665e5b-423e-466b-abdd-09aa72d0b314/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 (46)] Waiting until timeout for monitored process [2022-11-20 12:12:47,605 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-20 12:12:47,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:12:47,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-20 12:12:47,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:47,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2022-11-20 12:12:48,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2022-11-20 12:12:49,012 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:12:49,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 19 [2022-11-20 12:12:49,173 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:12:49,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:12:50,447 INFO L321 Elim1Store]: treesize reduction 120, result has 25.5 percent of original size [2022-11-20 12:12:50,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 149 treesize of output 106 [2022-11-20 12:12:50,456 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:12:50,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 9 [2022-11-20 12:12:53,200 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:12:53,200 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:12:53,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [611480765] [2022-11-20 12:12:53,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [611480765] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:12:53,200 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:12:53,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 32 [2022-11-20 12:12:53,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359691735] [2022-11-20 12:12:53,201 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:12:53,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 12:12:53,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:12:53,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 12:12:53,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1002, Unknown=5, NotChecked=0, Total=1122 [2022-11-20 12:12:53,202 INFO L87 Difference]: Start difference. First operand 550 states and 1469 transitions. Second operand has 34 states, 33 states have (on average 1.5757575757575757) internal successors, (52), 33 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:13:02,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:13:07,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:13:09,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:13:18,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:13:20,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:13:22,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:13:24,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:13:25,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:13:29,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:13:35,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:13:37,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:13:39,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:13:40,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:13:42,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:13:43,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []