./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/dll_nondet_free_order-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_nondet_free_order-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa --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 2f737570030041640fd86c7d2770b30b4e6ee4ac0d1c521887700aab87fb1426 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:57:38,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:57:38,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:57:38,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:57:38,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:57:38,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:57:38,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:57:38,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:57:38,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:57:38,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:57:38,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:57:38,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:57:38,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:57:38,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:57:38,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:57:38,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:57:38,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:57:38,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:57:38,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:57:38,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:57:38,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:57:38,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:57:38,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:57:38,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:57:38,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:57:38,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:57:38,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:57:38,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:57:38,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:57:38,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:57:38,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:57:38,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:57:38,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:57:38,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:57:38,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:57:38,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:57:38,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:57:38,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:57:38,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:57:38,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:57:38,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:57:38,711 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-06 18:57:38,729 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:57:38,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:57:38,729 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:57:38,729 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:57:38,730 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:57:38,730 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:57:38,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:57:38,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:57:38,731 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:57:38,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:57:38,731 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:57:38,731 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 18:57:38,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:57:38,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:57:38,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:57:38,732 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 18:57:38,732 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 18:57:38,732 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 18:57:38,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:57:38,732 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 18:57:38,732 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:57:38,732 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:57:38,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:57:38,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:57:38,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:57:38,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:57:38,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:57:38,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:57:38,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:57:38,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:57:38,734 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:57:38,734 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_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f737570030041640fd86c7d2770b30b4e6ee4ac0d1c521887700aab87fb1426 [2021-12-06 18:57:38,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:57:38,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:57:38,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:57:38,939 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:57:38,940 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:57:38,941 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/list-ext3-properties/dll_nondet_free_order-2.i [2021-12-06 18:57:38,982 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/data/bf89ddde6/b9e9aedd90384b89aac5d9f25a611310/FLAG70b50ef67 [2021-12-06 18:57:39,387 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:57:39,387 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/sv-benchmarks/c/list-ext3-properties/dll_nondet_free_order-2.i [2021-12-06 18:57:39,396 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/data/bf89ddde6/b9e9aedd90384b89aac5d9f25a611310/FLAG70b50ef67 [2021-12-06 18:57:39,407 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/data/bf89ddde6/b9e9aedd90384b89aac5d9f25a611310 [2021-12-06 18:57:39,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:57:39,410 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:57:39,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:57:39,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:57:39,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:57:39,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:57:39" (1/1) ... [2021-12-06 18:57:39,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44f373ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:39, skipping insertion in model container [2021-12-06 18:57:39,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:57:39" (1/1) ... [2021-12-06 18:57:39,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:57:39,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:57:39,672 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:57:39,678 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:57:39,717 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:57:39,741 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:57:39,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:39 WrapperNode [2021-12-06 18:57:39,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:57:39,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:57:39,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:57:39,742 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:57:39,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:39" (1/1) ... [2021-12-06 18:57:39,762 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:39" (1/1) ... [2021-12-06 18:57:39,785 INFO L137 Inliner]: procedures = 116, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 124 [2021-12-06 18:57:39,786 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:57:39,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:57:39,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:57:39,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:57:39,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:39" (1/1) ... [2021-12-06 18:57:39,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:39" (1/1) ... [2021-12-06 18:57:39,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:39" (1/1) ... [2021-12-06 18:57:39,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:39" (1/1) ... [2021-12-06 18:57:39,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:39" (1/1) ... [2021-12-06 18:57:39,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:39" (1/1) ... [2021-12-06 18:57:39,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:39" (1/1) ... [2021-12-06 18:57:39,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:57:39,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:57:39,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:57:39,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:57:39,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:39" (1/1) ... [2021-12-06 18:57:39,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:57:39,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:57:39,848 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:57:39,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:57:39,879 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-12-06 18:57:39,879 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-12-06 18:57:39,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 18:57:39,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 18:57:39,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 18:57:39,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 18:57:39,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:57:39,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:57:39,948 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:57:39,949 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:57:39,970 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-12-06 18:57:40,168 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:57:40,175 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:57:40,175 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 18:57:40,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:57:40 BoogieIcfgContainer [2021-12-06 18:57:40,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:57:40,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:57:40,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:57:40,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:57:40,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:57:39" (1/3) ... [2021-12-06 18:57:40,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4cb6fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:57:40, skipping insertion in model container [2021-12-06 18:57:40,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:39" (2/3) ... [2021-12-06 18:57:40,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4cb6fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:57:40, skipping insertion in model container [2021-12-06 18:57:40,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:57:40" (3/3) ... [2021-12-06 18:57:40,182 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_nondet_free_order-2.i [2021-12-06 18:57:40,186 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:57:40,186 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 59 error locations. [2021-12-06 18:57:40,218 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:57:40,223 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 18:57:40,223 INFO L340 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2021-12-06 18:57:40,236 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 71 states have (on average 1.9577464788732395) internal successors, (139), 131 states have internal predecessors, (139), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:40,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-06 18:57:40,241 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:40,242 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-06 18:57:40,242 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:57:40,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:40,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1079622, now seen corresponding path program 1 times [2021-12-06 18:57:40,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:40,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424633682] [2021-12-06 18:57:40,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:40,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:40,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:40,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:40,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424633682] [2021-12-06 18:57:40,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424633682] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:40,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:40,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:57:40,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180085261] [2021-12-06 18:57:40,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:40,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:57:40,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:40,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:57:40,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:57:40,400 INFO L87 Difference]: Start difference. First operand has 133 states, 71 states have (on average 1.9577464788732395) internal successors, (139), 131 states have internal predecessors, (139), 2 states have call successors, (2), 1 states have call predecessors, (2), 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 2.0) 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) [2021-12-06 18:57:40,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:40,481 INFO L93 Difference]: Finished difference Result 130 states and 137 transitions. [2021-12-06 18:57:40,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:57:40,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) 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 [2021-12-06 18:57:40,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:40,489 INFO L225 Difference]: With dead ends: 130 [2021-12-06 18:57:40,490 INFO L226 Difference]: Without dead ends: 124 [2021-12-06 18:57:40,491 INFO L932 BasicCegarLoop]: 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 [2021-12-06 18:57:40,494 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 50 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:40,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 165 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:57:40,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-12-06 18:57:40,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-12-06 18:57:40,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 68 states have (on average 1.8970588235294117) internal successors, (129), 123 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:40,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 129 transitions. [2021-12-06 18:57:40,523 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 129 transitions. Word has length 4 [2021-12-06 18:57:40,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:40,523 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 129 transitions. [2021-12-06 18:57:40,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) 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) [2021-12-06 18:57:40,524 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 129 transitions. [2021-12-06 18:57:40,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-06 18:57:40,524 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:40,524 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-06 18:57:40,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:57:40,524 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:57:40,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:40,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1079623, now seen corresponding path program 1 times [2021-12-06 18:57:40,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:40,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859300714] [2021-12-06 18:57:40,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:40,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:40,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:40,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:40,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859300714] [2021-12-06 18:57:40,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859300714] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:40,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:40,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:57:40,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742797558] [2021-12-06 18:57:40,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:40,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:57:40,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:40,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:57:40,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:57:40,560 INFO L87 Difference]: Start difference. First operand 124 states and 129 transitions. Second operand has 3 states, 2 states have (on average 2.0) 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) [2021-12-06 18:57:40,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:40,586 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2021-12-06 18:57:40,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:57:40,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) 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 [2021-12-06 18:57:40,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:40,588 INFO L225 Difference]: With dead ends: 121 [2021-12-06 18:57:40,588 INFO L226 Difference]: Without dead ends: 121 [2021-12-06 18:57:40,588 INFO L932 BasicCegarLoop]: 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 [2021-12-06 18:57:40,589 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 122 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:40,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 111 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:57:40,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-12-06 18:57:40,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2021-12-06 18:57:40,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 68 states have (on average 1.8529411764705883) internal successors, (126), 120 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:40,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 126 transitions. [2021-12-06 18:57:40,598 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 126 transitions. Word has length 4 [2021-12-06 18:57:40,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:40,598 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 126 transitions. [2021-12-06 18:57:40,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) 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) [2021-12-06 18:57:40,598 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 126 transitions. [2021-12-06 18:57:40,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 18:57:40,599 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:40,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:40,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 18:57:40,599 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:57:40,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:40,600 INFO L85 PathProgramCache]: Analyzing trace with hash 2065247192, now seen corresponding path program 1 times [2021-12-06 18:57:40,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:40,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187873579] [2021-12-06 18:57:40,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:40,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:40,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:40,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:40,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187873579] [2021-12-06 18:57:40,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187873579] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:40,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:40,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:57:40,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536574870] [2021-12-06 18:57:40,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:40,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:57:40,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:40,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:57:40,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:57:40,659 INFO L87 Difference]: Start difference. First operand 121 states and 126 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:40,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:40,755 INFO L93 Difference]: Finished difference Result 131 states and 137 transitions. [2021-12-06 18:57:40,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:57:40,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 18:57:40,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:40,756 INFO L225 Difference]: With dead ends: 131 [2021-12-06 18:57:40,757 INFO L226 Difference]: Without dead ends: 131 [2021-12-06 18:57:40,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:57:40,758 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 130 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:40,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 206 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:57:40,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-12-06 18:57:40,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2021-12-06 18:57:40,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 74 states have (on average 1.8513513513513513) internal successors, (137), 126 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:40,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2021-12-06 18:57:40,770 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 9 [2021-12-06 18:57:40,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:40,771 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 137 transitions. [2021-12-06 18:57:40,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:40,771 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 137 transitions. [2021-12-06 18:57:40,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 18:57:40,771 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:40,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:40,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 18:57:40,772 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:57:40,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:40,773 INFO L85 PathProgramCache]: Analyzing trace with hash 2065247193, now seen corresponding path program 1 times [2021-12-06 18:57:40,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:40,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140630402] [2021-12-06 18:57:40,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:40,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:40,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:40,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:40,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140630402] [2021-12-06 18:57:40,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140630402] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:40,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:40,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:57:40,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778601088] [2021-12-06 18:57:40,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:40,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:57:40,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:40,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:57:40,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:57:40,816 INFO L87 Difference]: Start difference. First operand 127 states and 137 transitions. Second operand has 3 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) [2021-12-06 18:57:40,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:40,823 INFO L93 Difference]: Finished difference Result 129 states and 134 transitions. [2021-12-06 18:57:40,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:57:40,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 18:57:40,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:40,825 INFO L225 Difference]: With dead ends: 129 [2021-12-06 18:57:40,825 INFO L226 Difference]: Without dead ends: 129 [2021-12-06 18:57:40,825 INFO L932 BasicCegarLoop]: 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 [2021-12-06 18:57:40,827 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 7 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:40,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 242 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:57:40,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-12-06 18:57:40,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125. [2021-12-06 18:57:40,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 72 states have (on average 1.8472222222222223) internal successors, (133), 124 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:40,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 133 transitions. [2021-12-06 18:57:40,836 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 133 transitions. Word has length 9 [2021-12-06 18:57:40,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:40,836 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 133 transitions. [2021-12-06 18:57:40,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2021-12-06 18:57:40,836 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 133 transitions. [2021-12-06 18:57:40,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 18:57:40,837 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:40,837 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:40,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 18:57:40,837 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:57:40,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:40,838 INFO L85 PathProgramCache]: Analyzing trace with hash 2065248729, now seen corresponding path program 1 times [2021-12-06 18:57:40,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:40,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893452626] [2021-12-06 18:57:40,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:40,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:40,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:40,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:40,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893452626] [2021-12-06 18:57:40,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893452626] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:40,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:40,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:57:40,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89698853] [2021-12-06 18:57:40,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:40,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:57:40,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:40,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:57:40,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:57:40,865 INFO L87 Difference]: Start difference. First operand 125 states and 133 transitions. Second operand has 3 states, 2 states have (on average 4.5) 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) [2021-12-06 18:57:40,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:40,904 INFO L93 Difference]: Finished difference Result 124 states and 131 transitions. [2021-12-06 18:57:40,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:57:40,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 18:57:40,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:40,905 INFO L225 Difference]: With dead ends: 124 [2021-12-06 18:57:40,905 INFO L226 Difference]: Without dead ends: 124 [2021-12-06 18:57:40,905 INFO L932 BasicCegarLoop]: 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 [2021-12-06 18:57:40,907 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 40 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:40,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 159 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:57:40,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-12-06 18:57:40,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-12-06 18:57:40,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 72 states have (on average 1.8194444444444444) internal successors, (131), 123 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:40,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 131 transitions. [2021-12-06 18:57:40,915 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 131 transitions. Word has length 9 [2021-12-06 18:57:40,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:40,915 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 131 transitions. [2021-12-06 18:57:40,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) 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) [2021-12-06 18:57:40,916 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 131 transitions. [2021-12-06 18:57:40,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 18:57:40,916 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:40,916 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:40,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 18:57:40,917 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:57:40,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:40,917 INFO L85 PathProgramCache]: Analyzing trace with hash 2065248730, now seen corresponding path program 1 times [2021-12-06 18:57:40,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:40,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503430320] [2021-12-06 18:57:40,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:40,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:40,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:40,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:40,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503430320] [2021-12-06 18:57:40,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503430320] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:40,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:40,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:57:40,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267389326] [2021-12-06 18:57:40,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:40,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:57:40,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:40,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:57:40,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:57:40,960 INFO L87 Difference]: Start difference. First operand 124 states and 131 transitions. Second operand has 3 states, 2 states have (on average 4.5) 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) [2021-12-06 18:57:40,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:40,977 INFO L93 Difference]: Finished difference Result 123 states and 129 transitions. [2021-12-06 18:57:40,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:57:40,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 18:57:40,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:40,978 INFO L225 Difference]: With dead ends: 123 [2021-12-06 18:57:40,978 INFO L226 Difference]: Without dead ends: 123 [2021-12-06 18:57:40,978 INFO L932 BasicCegarLoop]: 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 [2021-12-06 18:57:40,979 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 116 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:40,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 115 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:57:40,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-12-06 18:57:40,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-12-06 18:57:40,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 72 states have (on average 1.7916666666666667) internal successors, (129), 122 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:40,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 129 transitions. [2021-12-06 18:57:40,984 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 129 transitions. Word has length 9 [2021-12-06 18:57:40,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:40,984 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 129 transitions. [2021-12-06 18:57:40,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) 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) [2021-12-06 18:57:40,984 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 129 transitions. [2021-12-06 18:57:40,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 18:57:40,985 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:40,985 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:40,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 18:57:40,985 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:57:40,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:40,985 INFO L85 PathProgramCache]: Analyzing trace with hash -401798829, now seen corresponding path program 1 times [2021-12-06 18:57:40,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:40,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037463409] [2021-12-06 18:57:40,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:40,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:41,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:41,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:41,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037463409] [2021-12-06 18:57:41,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037463409] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:41,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:41,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:57:41,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457571238] [2021-12-06 18:57:41,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:41,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:57:41,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:41,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:57:41,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:57:41,046 INFO L87 Difference]: Start difference. First operand 123 states and 129 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:41,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:41,078 INFO L93 Difference]: Finished difference Result 124 states and 129 transitions. [2021-12-06 18:57:41,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:57:41,079 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-06 18:57:41,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:41,079 INFO L225 Difference]: With dead ends: 124 [2021-12-06 18:57:41,080 INFO L226 Difference]: Without dead ends: 124 [2021-12-06 18:57:41,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:57:41,080 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 123 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:41,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 214 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:57:41,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-12-06 18:57:41,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2021-12-06 18:57:41,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 72 states have (on average 1.7777777777777777) internal successors, (128), 122 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:41,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 128 transitions. [2021-12-06 18:57:41,085 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 128 transitions. Word has length 10 [2021-12-06 18:57:41,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:41,085 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 128 transitions. [2021-12-06 18:57:41,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:41,085 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 128 transitions. [2021-12-06 18:57:41,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 18:57:41,086 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:41,086 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:41,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 18:57:41,086 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:57:41,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:41,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1662359483, now seen corresponding path program 1 times [2021-12-06 18:57:41,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:41,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750251569] [2021-12-06 18:57:41,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:41,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:41,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:41,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:41,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750251569] [2021-12-06 18:57:41,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750251569] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:41,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:41,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:57:41,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971166871] [2021-12-06 18:57:41,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:41,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:57:41,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:41,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:57:41,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:57:41,121 INFO L87 Difference]: Start difference. First operand 123 states and 128 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:41,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:41,175 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2021-12-06 18:57:41,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:57:41,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-06 18:57:41,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:41,176 INFO L225 Difference]: With dead ends: 121 [2021-12-06 18:57:41,177 INFO L226 Difference]: Without dead ends: 121 [2021-12-06 18:57:41,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:57:41,178 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 69 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:41,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 208 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:57:41,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-12-06 18:57:41,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2021-12-06 18:57:41,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 72 states have (on average 1.75) internal successors, (126), 120 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:41,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 126 transitions. [2021-12-06 18:57:41,184 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 126 transitions. Word has length 14 [2021-12-06 18:57:41,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:41,184 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 126 transitions. [2021-12-06 18:57:41,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:41,184 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 126 transitions. [2021-12-06 18:57:41,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 18:57:41,185 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:41,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:41,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 18:57:41,185 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:57:41,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:41,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1662359482, now seen corresponding path program 1 times [2021-12-06 18:57:41,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:41,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587295713] [2021-12-06 18:57:41,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:41,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:41,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:41,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:41,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:41,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587295713] [2021-12-06 18:57:41,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587295713] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:57:41,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672161416] [2021-12-06 18:57:41,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:41,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:57:41,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:57:41,230 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:57:41,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 18:57:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:41,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 18:57:41,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:57:41,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:41,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:57:41,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:41,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672161416] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:57:41,362 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:57:41,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2021-12-06 18:57:41,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068755109] [2021-12-06 18:57:41,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:57:41,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:57:41,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:41,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:57:41,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:57:41,363 INFO L87 Difference]: Start difference. First operand 121 states and 126 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:41,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:41,371 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2021-12-06 18:57:41,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:57:41,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-06 18:57:41,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:41,373 INFO L225 Difference]: With dead ends: 123 [2021-12-06 18:57:41,373 INFO L226 Difference]: Without dead ends: 123 [2021-12-06 18:57:41,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:57:41,374 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 13 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:41,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 234 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:57:41,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-12-06 18:57:41,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-12-06 18:57:41,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 74 states have (on average 1.7297297297297298) internal successors, (128), 122 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:41,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 128 transitions. [2021-12-06 18:57:41,379 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 128 transitions. Word has length 14 [2021-12-06 18:57:41,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:41,379 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 128 transitions. [2021-12-06 18:57:41,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:41,379 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 128 transitions. [2021-12-06 18:57:41,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 18:57:41,380 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:41,380 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:41,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:57:41,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:57:41,581 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:57:41,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:41,582 INFO L85 PathProgramCache]: Analyzing trace with hash 6511238, now seen corresponding path program 1 times [2021-12-06 18:57:41,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:41,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175041046] [2021-12-06 18:57:41,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:41,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:41,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:41,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:41,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175041046] [2021-12-06 18:57:41,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175041046] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:57:41,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633313630] [2021-12-06 18:57:41,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:41,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:57:41,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:57:41,764 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:57:41,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 18:57:41,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:41,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 18:57:41,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:57:41,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:57:41,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:57:41,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:57:41,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 18:57:41,916 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 18:57:41,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 18:57:41,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:41,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:57:42,131 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:42,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633313630] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:57:42,131 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:57:42,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2021-12-06 18:57:42,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713354676] [2021-12-06 18:57:42,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:57:42,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 18:57:42,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:42,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 18:57:42,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:57:42,132 INFO L87 Difference]: Start difference. First operand 123 states and 128 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:42,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:42,235 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2021-12-06 18:57:42,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:57:42,235 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-06 18:57:42,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:42,236 INFO L225 Difference]: With dead ends: 121 [2021-12-06 18:57:42,236 INFO L226 Difference]: Without dead ends: 121 [2021-12-06 18:57:42,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-12-06 18:57:42,237 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 279 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:42,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 266 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 98 Invalid, 0 Unknown, 69 Unchecked, 0.1s Time] [2021-12-06 18:57:42,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-12-06 18:57:42,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2021-12-06 18:57:42,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 74 states have (on average 1.7027027027027026) internal successors, (126), 120 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:42,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 126 transitions. [2021-12-06 18:57:42,241 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 126 transitions. Word has length 15 [2021-12-06 18:57:42,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:42,241 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 126 transitions. [2021-12-06 18:57:42,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:42,242 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 126 transitions. [2021-12-06 18:57:42,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 18:57:42,243 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:42,243 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:42,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 18:57:42,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 18:57:42,444 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:57:42,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:42,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1580520033, now seen corresponding path program 1 times [2021-12-06 18:57:42,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:42,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552370990] [2021-12-06 18:57:42,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:42,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:42,618 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 18:57:42,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:42,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552370990] [2021-12-06 18:57:42,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552370990] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:42,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:42,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:57:42,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699538703] [2021-12-06 18:57:42,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:42,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:57:42,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:42,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:57:42,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:57:42,620 INFO L87 Difference]: Start difference. First operand 121 states and 126 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 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) [2021-12-06 18:57:42,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:42,722 INFO L93 Difference]: Finished difference Result 118 states and 123 transitions. [2021-12-06 18:57:42,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:57:42,722 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 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 22 [2021-12-06 18:57:42,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:42,723 INFO L225 Difference]: With dead ends: 118 [2021-12-06 18:57:42,723 INFO L226 Difference]: Without dead ends: 118 [2021-12-06 18:57:42,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:57:42,724 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 107 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:42,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 303 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:57:42,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-12-06 18:57:42,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-12-06 18:57:42,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 74 states have (on average 1.662162162162162) internal successors, (123), 117 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:42,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 123 transitions. [2021-12-06 18:57:42,727 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 123 transitions. Word has length 22 [2021-12-06 18:57:42,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:42,727 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 123 transitions. [2021-12-06 18:57:42,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 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) [2021-12-06 18:57:42,727 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 123 transitions. [2021-12-06 18:57:42,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 18:57:42,728 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:42,728 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:42,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 18:57:42,728 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:57:42,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:42,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1580520034, now seen corresponding path program 1 times [2021-12-06 18:57:42,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:42,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532652101] [2021-12-06 18:57:42,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:42,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:42,789 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:57:42,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:42,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532652101] [2021-12-06 18:57:42,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532652101] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:42,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:42,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:57:42,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109756196] [2021-12-06 18:57:42,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:42,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:57:42,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:42,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:57:42,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:57:42,791 INFO L87 Difference]: Start difference. First operand 118 states and 123 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:42,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:42,865 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2021-12-06 18:57:42,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:57:42,865 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have 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 [2021-12-06 18:57:42,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:42,866 INFO L225 Difference]: With dead ends: 111 [2021-12-06 18:57:42,866 INFO L226 Difference]: Without dead ends: 111 [2021-12-06 18:57:42,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:57:42,867 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 388 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:42,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 89 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:57:42,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-12-06 18:57:42,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-12-06 18:57:42,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 74 states have (on average 1.5675675675675675) internal successors, (116), 110 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:42,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 116 transitions. [2021-12-06 18:57:42,869 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 116 transitions. Word has length 22 [2021-12-06 18:57:42,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:42,869 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 116 transitions. [2021-12-06 18:57:42,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:42,870 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 116 transitions. [2021-12-06 18:57:42,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 18:57:42,870 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:42,870 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:42,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 18:57:42,871 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:57:42,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:42,871 INFO L85 PathProgramCache]: Analyzing trace with hash 67241285, now seen corresponding path program 1 times [2021-12-06 18:57:42,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:42,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600984249] [2021-12-06 18:57:42,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:42,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:42,918 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:57:42,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:42,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600984249] [2021-12-06 18:57:42,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600984249] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:42,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:42,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:57:42,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605283133] [2021-12-06 18:57:42,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:42,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:57:42,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:42,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:57:42,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:57:42,920 INFO L87 Difference]: Start difference. First operand 111 states and 116 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:42,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:42,991 INFO L93 Difference]: Finished difference Result 106 states and 111 transitions. [2021-12-06 18:57:42,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:57:42,992 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-06 18:57:42,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:42,992 INFO L225 Difference]: With dead ends: 106 [2021-12-06 18:57:42,993 INFO L226 Difference]: Without dead ends: 106 [2021-12-06 18:57:42,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:57:42,994 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 362 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:42,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 80 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:57:42,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-12-06 18:57:42,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-12-06 18:57:42,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 74 states have (on average 1.5) internal successors, (111), 105 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:42,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 111 transitions. [2021-12-06 18:57:42,997 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 111 transitions. Word has length 28 [2021-12-06 18:57:42,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:42,998 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 111 transitions. [2021-12-06 18:57:42,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:42,998 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 111 transitions. [2021-12-06 18:57:42,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 18:57:42,999 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:42,999 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:42,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 18:57:42,999 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:57:42,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:42,999 INFO L85 PathProgramCache]: Analyzing trace with hash 67280267, now seen corresponding path program 1 times [2021-12-06 18:57:43,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:43,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109498632] [2021-12-06 18:57:43,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:43,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:43,128 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:57:43,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:43,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109498632] [2021-12-06 18:57:43,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109498632] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:43,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:43,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 18:57:43,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440863457] [2021-12-06 18:57:43,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:43,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:57:43,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:43,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:57:43,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:57:43,130 INFO L87 Difference]: Start difference. First operand 106 states and 111 transitions. Second operand has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:43,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:43,264 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2021-12-06 18:57:43,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:57:43,265 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-06 18:57:43,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:43,265 INFO L225 Difference]: With dead ends: 101 [2021-12-06 18:57:43,266 INFO L226 Difference]: Without dead ends: 101 [2021-12-06 18:57:43,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-12-06 18:57:43,267 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 678 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:43,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [678 Valid, 143 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:57:43,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-12-06 18:57:43,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-12-06 18:57:43,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 74 states have (on average 1.4324324324324325) internal successors, (106), 100 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:43,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 106 transitions. [2021-12-06 18:57:43,270 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 106 transitions. Word has length 28 [2021-12-06 18:57:43,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:43,270 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 106 transitions. [2021-12-06 18:57:43,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:43,271 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 106 transitions. [2021-12-06 18:57:43,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 18:57:43,271 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:43,272 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:43,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 18:57:43,272 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:57:43,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:43,272 INFO L85 PathProgramCache]: Analyzing trace with hash 67279051, now seen corresponding path program 1 times [2021-12-06 18:57:43,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:43,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674245050] [2021-12-06 18:57:43,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:43,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:43,424 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:43,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:43,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674245050] [2021-12-06 18:57:43,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674245050] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:57:43,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351755359] [2021-12-06 18:57:43,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:43,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:57:43,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:57:43,425 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:57:43,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 18:57:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:43,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 55 conjunts are in the unsatisfiable core [2021-12-06 18:57:43,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:57:43,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:57:43,530 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 18:57:43,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 18:57:43,600 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-06 18:57:43,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 18:57:43,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:57:43,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 18:57:43,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2021-12-06 18:57:43,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:57:43,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-12-06 18:57:43,851 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:57:43,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2021-12-06 18:57:43,857 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:43,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:57:43,879 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_434 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_434) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|) 0)) is different from false [2021-12-06 18:57:43,885 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_434 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_434) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) 0)) is different from false [2021-12-06 18:57:43,891 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_432 (Array Int Int)) (v_ArrVal_434 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_432) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_434) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) 0)) is different from false [2021-12-06 18:57:43,897 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:57:43,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 22 [2021-12-06 18:57:43,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 60 treesize of output 52 [2021-12-06 18:57:43,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 48 treesize of output 44 [2021-12-06 18:57:43,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 20 [2021-12-06 18:57:44,088 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-12-06 18:57:44,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351755359] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:57:44,089 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:57:44,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 13] total 33 [2021-12-06 18:57:44,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883922709] [2021-12-06 18:57:44,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:57:44,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-06 18:57:44,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:44,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-06 18:57:44,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=840, Unknown=3, NotChecked=180, Total=1122 [2021-12-06 18:57:44,091 INFO L87 Difference]: Start difference. First operand 101 states and 106 transitions. Second operand has 34 states, 33 states have (on average 2.0606060606060606) internal successors, (68), 34 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:44,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:44,488 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2021-12-06 18:57:44,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 18:57:44,488 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.0606060606060606) internal successors, (68), 34 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-06 18:57:44,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:44,489 INFO L225 Difference]: With dead ends: 97 [2021-12-06 18:57:44,489 INFO L226 Difference]: Without dead ends: 97 [2021-12-06 18:57:44,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=252, Invalid=1563, Unknown=3, NotChecked=252, Total=2070 [2021-12-06 18:57:44,491 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 580 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 340 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:44,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 553 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 388 Invalid, 0 Unknown, 340 Unchecked, 0.1s Time] [2021-12-06 18:57:44,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-12-06 18:57:44,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2021-12-06 18:57:44,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 74 states have (on average 1.3783783783783783) internal successors, (102), 96 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:44,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 102 transitions. [2021-12-06 18:57:44,494 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 102 transitions. Word has length 28 [2021-12-06 18:57:44,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:44,494 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 102 transitions. [2021-12-06 18:57:44,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.0606060606060606) internal successors, (68), 34 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:44,495 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 102 transitions. [2021-12-06 18:57:44,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 18:57:44,496 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:44,496 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:44,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 18:57:44,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 18:57:44,696 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:57:44,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:44,697 INFO L85 PathProgramCache]: Analyzing trace with hash 2085688457, now seen corresponding path program 1 times [2021-12-06 18:57:44,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:44,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444165083] [2021-12-06 18:57:44,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:44,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:44,829 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:57:44,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:44,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444165083] [2021-12-06 18:57:44,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444165083] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:44,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:44,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 18:57:44,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50231490] [2021-12-06 18:57:44,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:44,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:57:44,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:44,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:57:44,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:57:44,831 INFO L87 Difference]: Start difference. First operand 97 states and 102 transitions. Second operand has 11 states, 10 states have (on average 2.9) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:45,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:45,005 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2021-12-06 18:57:45,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:57:45,005 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-06 18:57:45,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:45,006 INFO L225 Difference]: With dead ends: 92 [2021-12-06 18:57:45,006 INFO L226 Difference]: Without dead ends: 92 [2021-12-06 18:57:45,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-12-06 18:57:45,007 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 528 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:45,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [528 Valid, 68 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:57:45,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-12-06 18:57:45,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-12-06 18:57:45,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 74 states have (on average 1.3108108108108107) internal successors, (97), 91 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:45,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 97 transitions. [2021-12-06 18:57:45,010 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 97 transitions. Word has length 29 [2021-12-06 18:57:45,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:45,010 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 97 transitions. [2021-12-06 18:57:45,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:45,010 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 97 transitions. [2021-12-06 18:57:45,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 18:57:45,011 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:45,011 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:45,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 18:57:45,012 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:57:45,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:45,012 INFO L85 PathProgramCache]: Analyzing trace with hash 2085650723, now seen corresponding path program 1 times [2021-12-06 18:57:45,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:45,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964867575] [2021-12-06 18:57:45,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:45,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:45,176 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:45,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:45,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964867575] [2021-12-06 18:57:45,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964867575] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:57:45,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224072827] [2021-12-06 18:57:45,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:45,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:57:45,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:57:45,177 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:57:45,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 18:57:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:45,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 46 conjunts are in the unsatisfiable core [2021-12-06 18:57:45,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:57:45,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:57:45,288 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-06 18:57:45,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 18:57:45,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:57:45,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 18:57:45,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 40 treesize of output 38 [2021-12-06 18:57:45,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:57:45,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 47 treesize of output 38 [2021-12-06 18:57:45,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 41 treesize of output 25 [2021-12-06 18:57:45,585 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:45,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:57:45,625 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_556 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_556) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|) 1) |c_#StackHeapBarrier|)) is different from false [2021-12-06 18:57:45,633 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_556 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_556) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) 1) |c_#StackHeapBarrier|)) is different from false [2021-12-06 18:57:45,638 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_556 (Array Int Int)) (v_ArrVal_555 (Array Int Int))) (<= (+ (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_555) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_556) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) 1) |c_#StackHeapBarrier|)) is different from false [2021-12-06 18:57:45,648 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:57:45,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 18:57:45,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 137 treesize of output 125 [2021-12-06 18:57:45,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 61 treesize of output 57 [2021-12-06 18:57:45,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 118 treesize of output 110 [2021-12-06 18:57:45,915 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 18:57:45,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 18:57:45,936 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-12-06 18:57:45,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224072827] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:57:45,936 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:57:45,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 28 [2021-12-06 18:57:45,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374038286] [2021-12-06 18:57:45,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:57:45,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-06 18:57:45,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:45,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-06 18:57:45,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=581, Unknown=3, NotChecked=150, Total=812 [2021-12-06 18:57:45,938 INFO L87 Difference]: Start difference. First operand 92 states and 97 transitions. Second operand has 29 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 29 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:46,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:46,530 INFO L93 Difference]: Finished difference Result 173 states and 182 transitions. [2021-12-06 18:57:46,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 18:57:46,530 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 29 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-06 18:57:46,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:46,531 INFO L225 Difference]: With dead ends: 173 [2021-12-06 18:57:46,531 INFO L226 Difference]: Without dead ends: 173 [2021-12-06 18:57:46,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 43 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=151, Invalid=850, Unknown=3, NotChecked=186, Total=1190 [2021-12-06 18:57:46,532 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 533 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 680 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:46,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [533 Valid, 757 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 733 Invalid, 0 Unknown, 680 Unchecked, 0.3s Time] [2021-12-06 18:57:46,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-12-06 18:57:46,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 129. [2021-12-06 18:57:46,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 111 states have (on average 1.2792792792792793) internal successors, (142), 128 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:46,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 142 transitions. [2021-12-06 18:57:46,535 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 142 transitions. Word has length 29 [2021-12-06 18:57:46,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:46,535 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 142 transitions. [2021-12-06 18:57:46,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 29 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:46,536 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 142 transitions. [2021-12-06 18:57:46,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 18:57:46,536 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:46,536 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:46,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 18:57:46,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:57:46,738 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:57:46,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:46,739 INFO L85 PathProgramCache]: Analyzing trace with hash 231832909, now seen corresponding path program 1 times [2021-12-06 18:57:46,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:46,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440282244] [2021-12-06 18:57:46,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:46,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:46,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:46,858 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:57:46,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:46,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440282244] [2021-12-06 18:57:46,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440282244] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:46,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:46,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:57:46,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307731608] [2021-12-06 18:57:46,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:46,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 18:57:46,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:46,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 18:57:46,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-06 18:57:46,860 INFO L87 Difference]: Start difference. First operand 129 states and 142 transitions. Second operand has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 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) [2021-12-06 18:57:47,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:47,020 INFO L93 Difference]: Finished difference Result 128 states and 140 transitions. [2021-12-06 18:57:47,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 18:57:47,021 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 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 30 [2021-12-06 18:57:47,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:47,021 INFO L225 Difference]: With dead ends: 128 [2021-12-06 18:57:47,021 INFO L226 Difference]: Without dead ends: 128 [2021-12-06 18:57:47,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-12-06 18:57:47,022 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 241 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:47,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 262 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:57:47,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-12-06 18:57:47,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-12-06 18:57:47,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 111 states have (on average 1.2612612612612613) internal successors, (140), 127 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) [2021-12-06 18:57:47,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 140 transitions. [2021-12-06 18:57:47,025 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 140 transitions. Word has length 30 [2021-12-06 18:57:47,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:47,025 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 140 transitions. [2021-12-06 18:57:47,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 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) [2021-12-06 18:57:47,025 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 140 transitions. [2021-12-06 18:57:47,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 18:57:47,026 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:47,026 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:47,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 18:57:47,026 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:57:47,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:47,026 INFO L85 PathProgramCache]: Analyzing trace with hash 230663117, now seen corresponding path program 1 times [2021-12-06 18:57:47,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:47,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698282578] [2021-12-06 18:57:47,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:47,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:47,160 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:47,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:47,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698282578] [2021-12-06 18:57:47,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698282578] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:57:47,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771739703] [2021-12-06 18:57:47,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:47,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:57:47,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:57:47,161 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:57:47,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 18:57:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:47,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 55 conjunts are in the unsatisfiable core [2021-12-06 18:57:47,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:57:47,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:57:47,250 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 18:57:47,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 18:57:47,295 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-06 18:57:47,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 18:57:47,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:57:47,323 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 18:57:47,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2021-12-06 18:57:47,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 24 [2021-12-06 18:57:47,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:57:47,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2021-12-06 18:57:47,496 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:57:47,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 22 [2021-12-06 18:57:47,515 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:47,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:57:47,587 INFO L354 Elim1Store]: treesize reduction 18, result has 60.0 percent of original size [2021-12-06 18:57:47,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 38 [2021-12-06 18:57:47,592 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_679 (Array Int Int)) (v_ArrVal_680 (Array Int Int))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_679) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_680) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|))) (or (= .cse0 |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) (= .cse0 |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|)))) is different from false [2021-12-06 18:57:47,597 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:57:47,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 35 [2021-12-06 18:57:47,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 235 treesize of output 215 [2021-12-06 18:57:47,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 195 treesize of output 187 [2021-12-06 18:57:47,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 187 treesize of output 171 [2021-12-06 18:57:47,699 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-12-06 18:57:47,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771739703] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:57:47,700 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:57:47,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 13] total 28 [2021-12-06 18:57:47,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822913475] [2021-12-06 18:57:47,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:57:47,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-06 18:57:47,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:47,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-06 18:57:47,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=674, Unknown=1, NotChecked=52, Total=812 [2021-12-06 18:57:47,701 INFO L87 Difference]: Start difference. First operand 128 states and 140 transitions. Second operand has 29 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 29 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:48,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:48,223 INFO L93 Difference]: Finished difference Result 127 states and 139 transitions. [2021-12-06 18:57:48,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 18:57:48,223 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 29 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-06 18:57:48,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:48,224 INFO L225 Difference]: With dead ends: 127 [2021-12-06 18:57:48,224 INFO L226 Difference]: Without dead ends: 127 [2021-12-06 18:57:48,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=314, Invalid=1249, Unknown=1, NotChecked=76, Total=1640 [2021-12-06 18:57:48,225 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 206 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 125 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:48,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 666 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 581 Invalid, 0 Unknown, 125 Unchecked, 0.2s Time] [2021-12-06 18:57:48,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-12-06 18:57:48,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-12-06 18:57:48,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 111 states have (on average 1.2522522522522523) internal successors, (139), 126 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:48,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 139 transitions. [2021-12-06 18:57:48,227 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 139 transitions. Word has length 30 [2021-12-06 18:57:48,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:48,228 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 139 transitions. [2021-12-06 18:57:48,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 29 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:48,228 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 139 transitions. [2021-12-06 18:57:48,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 18:57:48,228 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:48,228 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:48,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 18:57:48,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:57:48,430 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:57:48,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:48,431 INFO L85 PathProgramCache]: Analyzing trace with hash 823875782, now seen corresponding path program 1 times [2021-12-06 18:57:48,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:48,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076524434] [2021-12-06 18:57:48,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:48,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:48,608 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:48,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:48,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076524434] [2021-12-06 18:57:48,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076524434] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:57:48,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115762751] [2021-12-06 18:57:48,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:48,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:57:48,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:57:48,609 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:57:48,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 18:57:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:48,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-06 18:57:48,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:57:48,707 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 18:57:48,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 18:57:48,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:57:48,799 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:57:48,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-12-06 18:57:48,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 18:57:48,949 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:48,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:57:49,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 11 [2021-12-06 18:57:49,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 [2021-12-06 18:57:49,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 [2021-12-06 18:57:49,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:57:49,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 4 [2021-12-06 18:57:49,124 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 18:57:49,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2021-12-06 18:57:49,131 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:49,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115762751] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:57:49,131 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:57:49,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 29 [2021-12-06 18:57:49,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999330038] [2021-12-06 18:57:49,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:57:49,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-06 18:57:49,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:49,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-06 18:57:49,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2021-12-06 18:57:49,133 INFO L87 Difference]: Start difference. First operand 127 states and 139 transitions. Second operand has 30 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 30 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:49,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:49,504 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2021-12-06 18:57:49,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 18:57:49,504 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 30 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-06 18:57:49,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:49,504 INFO L225 Difference]: With dead ends: 126 [2021-12-06 18:57:49,505 INFO L226 Difference]: Without dead ends: 126 [2021-12-06 18:57:49,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=282, Invalid=1358, Unknown=0, NotChecked=0, Total=1640 [2021-12-06 18:57:49,506 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 352 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 115 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:49,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 596 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 607 Invalid, 0 Unknown, 115 Unchecked, 0.2s Time] [2021-12-06 18:57:49,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-12-06 18:57:49,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-12-06 18:57:49,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 111 states have (on average 1.2342342342342343) internal successors, (137), 125 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:49,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 137 transitions. [2021-12-06 18:57:49,509 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 137 transitions. Word has length 33 [2021-12-06 18:57:49,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:49,509 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 137 transitions. [2021-12-06 18:57:49,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 30 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:49,509 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 137 transitions. [2021-12-06 18:57:49,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 18:57:49,510 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:49,510 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:49,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 18:57:49,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:57:49,712 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:57:49,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:49,713 INFO L85 PathProgramCache]: Analyzing trace with hash 823444806, now seen corresponding path program 1 times [2021-12-06 18:57:49,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:49,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264171153] [2021-12-06 18:57:49,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:49,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:49,917 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:49,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:49,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264171153] [2021-12-06 18:57:49,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264171153] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:57:49,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514526414] [2021-12-06 18:57:49,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:49,918 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:57:49,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:57:49,918 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:57:49,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 18:57:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:49,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 46 conjunts are in the unsatisfiable core [2021-12-06 18:57:49,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:57:49,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:57:50,036 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-06 18:57:50,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 18:57:50,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:57:50,058 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 18:57:50,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2021-12-06 18:57:50,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 24 [2021-12-06 18:57:50,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:57:50,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 31 treesize of output 26 [2021-12-06 18:57:50,167 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:57:50,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 21 [2021-12-06 18:57:50,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 18:57:50,261 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:50,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:57:52,432 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_851 Int) (v_ArrVal_850 (Array Int Int))) (not (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_850) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset| 4) v_ArrVal_851) 0)))) (forall ((v_ArrVal_851 Int) (v_ArrVal_850 (Array Int Int))) (= (select |c_#valid| (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_850) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset| 4) v_ArrVal_851) 0)) 1))) is different from false [2021-12-06 18:57:52,456 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_29| Int)) (or (< |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_29| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) (and (forall ((v_ArrVal_851 Int) (v_ArrVal_850 (Array Int Int))) (not (= (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_850) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_29| 4) v_ArrVal_851) 0) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|))) (forall ((v_ArrVal_851 Int) (v_ArrVal_850 (Array Int Int))) (= (select |c_#valid| (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_850) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_29| 4) v_ArrVal_851) 0)) 1))))) is different from false [2021-12-06 18:57:52,468 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:57:52,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 51 [2021-12-06 18:57:52,505 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_29| Int)) (or (< |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_29| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) (and (forall ((v_prenex_3 Int) (v_ArrVal_849 (Array Int Int)) (v_prenex_4 (Array Int Int))) (not (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| (select (store (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_849) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_prenex_4) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_29| 4) v_prenex_3) 0)))) (forall ((v_ArrVal_851 Int) (v_ArrVal_849 (Array Int Int)) (v_ArrVal_850 (Array Int Int))) (= (select (store (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_849) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_850) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_29| 4) v_ArrVal_851) 0) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|))))) is different from false [2021-12-06 18:57:52,515 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:57:52,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 47 [2021-12-06 18:57:52,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 325 treesize of output 315 [2021-12-06 18:57:52,526 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:57:52,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 365 treesize of output 363 [2021-12-06 18:57:52,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 376 treesize of output 372 [2021-12-06 18:57:52,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 424 treesize of output 416 [2021-12-06 18:57:52,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 464 treesize of output 456 [2021-12-06 18:57:52,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 480 treesize of output 476 [2021-12-06 18:57:52,694 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 18:57:52,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 18:57:52,702 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-12-06 18:57:52,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514526414] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:57:52,703 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:57:52,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 33 [2021-12-06 18:57:52,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928149484] [2021-12-06 18:57:52,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:57:52,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-06 18:57:52,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:52,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-06 18:57:52,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=848, Unknown=3, NotChecked=180, Total=1122 [2021-12-06 18:57:52,704 INFO L87 Difference]: Start difference. First operand 126 states and 137 transitions. Second operand has 34 states, 33 states have (on average 2.0606060606060606) internal successors, (68), 34 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:53,369 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#valid| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|))) (and (= .cse0 1) (not (= .cse0 0)) (not (= 0 (select |c_#valid| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|))) (forall ((|v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_29| Int)) (or (< |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_29| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) (and (forall ((v_prenex_3 Int) (v_ArrVal_849 (Array Int Int)) (v_prenex_4 (Array Int Int))) (not (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| (select (store (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_849) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_prenex_4) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_29| 4) v_prenex_3) 0)))) (forall ((v_ArrVal_851 Int) (v_ArrVal_849 (Array Int Int)) (v_ArrVal_850 (Array Int Int))) (= (select (store (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_849) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_850) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_29| 4) v_ArrVal_851) 0) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|))))) (not (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|)) (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) (not (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|)) (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 0) (not (= (select |c_#valid| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) 0)))) is different from false [2021-12-06 18:57:54,043 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|))) (and (= (select |c_#valid| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) 1) (not (= .cse0 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|)) (= (select |c_#valid| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) 1) (not (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|)) (= (select |c_#valid| .cse0) 1) (forall ((|v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_29| Int)) (or (< |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_29| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) (and (forall ((v_ArrVal_851 Int) (v_ArrVal_850 (Array Int Int))) (not (= (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_850) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_29| 4) v_ArrVal_851) 0) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|))) (forall ((v_ArrVal_851 Int) (v_ArrVal_850 (Array Int Int))) (= (select |c_#valid| (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_850) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_29| 4) v_ArrVal_851) 0)) 1))))) (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 0))) is different from false [2021-12-06 18:57:56,106 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_29| Int)) (or (< |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_29| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) (and (forall ((v_prenex_3 Int) (v_ArrVal_849 (Array Int Int)) (v_prenex_4 (Array Int Int))) (not (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| (select (store (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_849) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_prenex_4) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_29| 4) v_prenex_3) 0)))) (forall ((v_ArrVal_851 Int) (v_ArrVal_849 (Array Int Int)) (v_ArrVal_850 (Array Int Int))) (= (select (store (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_849) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_850) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_29| 4) v_ArrVal_851) 0) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|))))) (not (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|)) (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) (not (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|)) (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 0)) is different from false [2021-12-06 18:57:56,720 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|))) (and (not (= .cse0 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|)) (not (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|)) (= (select |c_#valid| .cse0) 1) (forall ((|v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_29| Int)) (or (< |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_29| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) (and (forall ((v_ArrVal_851 Int) (v_ArrVal_850 (Array Int Int))) (not (= (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_850) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_29| 4) v_ArrVal_851) 0) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|))) (forall ((v_ArrVal_851 Int) (v_ArrVal_850 (Array Int Int))) (= (select |c_#valid| (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_850) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |v_ULTIMATE.start_dll_circular_create_~head~0#1.offset_29| 4) v_ArrVal_851) 0)) 1))))) (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 0))) is different from false [2021-12-06 18:57:57,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:57,116 INFO L93 Difference]: Finished difference Result 128 states and 139 transitions. [2021-12-06 18:57:57,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 18:57:57,117 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.0606060606060606) internal successors, (68), 34 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-06 18:57:57,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:57,117 INFO L225 Difference]: With dead ends: 128 [2021-12-06 18:57:57,118 INFO L226 Difference]: Without dead ends: 128 [2021-12-06 18:57:57,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=196, Invalid=1547, Unknown=7, NotChecked=602, Total=2352 [2021-12-06 18:57:57,119 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 125 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 283 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:57,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 1135 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 753 Invalid, 0 Unknown, 283 Unchecked, 0.2s Time] [2021-12-06 18:57:57,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-12-06 18:57:57,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2021-12-06 18:57:57,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 112 states have (on average 1.2321428571428572) internal successors, (138), 126 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:57,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 138 transitions. [2021-12-06 18:57:57,121 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 138 transitions. Word has length 33 [2021-12-06 18:57:57,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:57,122 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 138 transitions. [2021-12-06 18:57:57,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.0606060606060606) internal successors, (68), 34 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:57,122 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 138 transitions. [2021-12-06 18:57:57,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 18:57:57,122 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:57,122 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:57,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 18:57:57,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:57:57,323 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:57:57,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:57,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1553624943, now seen corresponding path program 1 times [2021-12-06 18:57:57,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:57,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787228502] [2021-12-06 18:57:57,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:57,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:57,513 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:57,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:57,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787228502] [2021-12-06 18:57:57,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787228502] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:57:57,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398432035] [2021-12-06 18:57:57,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:57,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:57:57,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:57:57,514 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:57:57,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 18:57:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:57,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-06 18:57:57,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:57:57,627 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 18:57:57,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 18:57:57,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:57:57,702 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:57:57,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-12-06 18:57:57,794 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:57:57,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-12-06 18:57:57,825 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:57,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:57:57,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 36 treesize of output 32 [2021-12-06 18:57:57,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 11 [2021-12-06 18:57:57,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 [2021-12-06 18:57:57,996 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 18:57:57,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2021-12-06 18:57:58,004 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:58,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398432035] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:57:58,004 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:57:58,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 30 [2021-12-06 18:57:58,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590940990] [2021-12-06 18:57:58,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:57:58,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-06 18:57:58,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:58,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-06 18:57:58,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=818, Unknown=0, NotChecked=0, Total=930 [2021-12-06 18:57:58,006 INFO L87 Difference]: Start difference. First operand 127 states and 138 transitions. Second operand has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 31 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:58,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:58,377 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2021-12-06 18:57:58,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 18:57:58,377 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 31 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-06 18:57:58,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:58,378 INFO L225 Difference]: With dead ends: 126 [2021-12-06 18:57:58,378 INFO L226 Difference]: Without dead ends: 126 [2021-12-06 18:57:58,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=302, Invalid=1420, Unknown=0, NotChecked=0, Total=1722 [2021-12-06 18:57:58,379 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 499 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 115 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:58,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [499 Valid, 468 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 444 Invalid, 0 Unknown, 115 Unchecked, 0.1s Time] [2021-12-06 18:57:58,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-12-06 18:57:58,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-12-06 18:57:58,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 112 states have (on average 1.2232142857142858) internal successors, (137), 125 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:58,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 137 transitions. [2021-12-06 18:57:58,382 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 137 transitions. Word has length 34 [2021-12-06 18:57:58,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:58,382 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 137 transitions. [2021-12-06 18:57:58,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 31 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:58,382 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 137 transitions. [2021-12-06 18:57:58,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 18:57:58,382 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:58,383 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:58,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 18:57:58,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-06 18:57:58,583 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:57:58,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:58,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1554055919, now seen corresponding path program 1 times [2021-12-06 18:57:58,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:58,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862369] [2021-12-06 18:57:58,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:58,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:58,719 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:58,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:58,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862369] [2021-12-06 18:57:58,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862369] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:57:58,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270435129] [2021-12-06 18:57:58,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:58,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:57:58,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:57:58,720 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:57:58,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 18:57:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:58,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-06 18:57:58,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:57:58,808 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 18:57:58,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 18:57:58,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:57:58,871 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:57:58,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-12-06 18:57:58,953 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:57:58,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-12-06 18:57:58,982 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:58,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:57:59,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 36 treesize of output 32 [2021-12-06 18:57:59,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 11 [2021-12-06 18:57:59,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 [2021-12-06 18:57:59,127 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 18:57:59,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2021-12-06 18:57:59,133 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:59,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270435129] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:57:59,133 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:57:59,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 30 [2021-12-06 18:57:59,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485242933] [2021-12-06 18:57:59,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:57:59,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-06 18:57:59,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:59,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-06 18:57:59,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=818, Unknown=0, NotChecked=0, Total=930 [2021-12-06 18:57:59,134 INFO L87 Difference]: Start difference. First operand 126 states and 137 transitions. Second operand has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 31 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:59,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:59,450 INFO L93 Difference]: Finished difference Result 125 states and 135 transitions. [2021-12-06 18:57:59,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 18:57:59,450 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 31 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-06 18:57:59,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:59,451 INFO L225 Difference]: With dead ends: 125 [2021-12-06 18:57:59,451 INFO L226 Difference]: Without dead ends: 125 [2021-12-06 18:57:59,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=289, Invalid=1351, Unknown=0, NotChecked=0, Total=1640 [2021-12-06 18:57:59,452 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 449 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:59,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 427 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 489 Invalid, 0 Unknown, 107 Unchecked, 0.2s Time] [2021-12-06 18:57:59,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-12-06 18:57:59,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-12-06 18:57:59,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 112 states have (on average 1.2053571428571428) internal successors, (135), 124 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:59,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 135 transitions. [2021-12-06 18:57:59,455 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 135 transitions. Word has length 34 [2021-12-06 18:57:59,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:59,455 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 135 transitions. [2021-12-06 18:57:59,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 31 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:59,455 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 135 transitions. [2021-12-06 18:57:59,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 18:57:59,455 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:59,455 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:59,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 18:57:59,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-06 18:57:59,657 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:57:59,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:59,658 INFO L85 PathProgramCache]: Analyzing trace with hash 449486225, now seen corresponding path program 1 times [2021-12-06 18:57:59,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:59,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631309560] [2021-12-06 18:57:59,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:59,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:59,969 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:59,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:59,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631309560] [2021-12-06 18:57:59,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631309560] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:57:59,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674505975] [2021-12-06 18:57:59,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:59,970 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:57:59,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:57:59,970 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:57:59,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 18:58:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:00,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 60 conjunts are in the unsatisfiable core [2021-12-06 18:58:00,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:00,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:58:00,058 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 18:58:00,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-06 18:58:00,102 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-06 18:58:00,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 18:58:00,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:58:00,157 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 18:58:00,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2021-12-06 18:58:00,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2021-12-06 18:58:00,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:58:00,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2021-12-06 18:58:00,376 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:58:00,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 24 [2021-12-06 18:58:00,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 18:58:00,396 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:00,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:58:00,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 4 [2021-12-06 18:58:00,537 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1105 (Array Int Int))) (not (= (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_1105) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset| 4) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|))) is different from false [2021-12-06 18:58:00,542 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1105 (Array Int Int))) (not (= (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_1105) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 4) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|))) is different from false [2021-12-06 18:58:00,547 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1105 (Array Int Int)) (v_ArrVal_1104 (Array Int Int))) (not (= (select (store (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_1104) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_1105) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 4) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|))) is different from false [2021-12-06 18:58:00,552 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:58:00,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2021-12-06 18:58:00,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 171 treesize of output 165 [2021-12-06 18:58:00,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 181 treesize of output 175 [2021-12-06 18:58:00,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 17 [2021-12-06 18:58:00,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 17 [2021-12-06 18:58:00,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 17 [2021-12-06 18:58:00,836 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-12-06 18:58:00,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674505975] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:58:00,836 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:58:00,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17, 17] total 47 [2021-12-06 18:58:00,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615407410] [2021-12-06 18:58:00,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:58:00,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-06 18:58:00,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:58:00,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-06 18:58:00,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1817, Unknown=3, NotChecked=264, Total=2256 [2021-12-06 18:58:00,838 INFO L87 Difference]: Start difference. First operand 125 states and 135 transitions. Second operand has 48 states, 47 states have (on average 1.702127659574468) internal successors, (80), 48 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:01,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:01,830 INFO L93 Difference]: Finished difference Result 122 states and 132 transitions. [2021-12-06 18:58:01,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 18:58:01,830 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.702127659574468) internal successors, (80), 48 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-06 18:58:01,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:01,831 INFO L225 Difference]: With dead ends: 122 [2021-12-06 18:58:01,831 INFO L226 Difference]: Without dead ends: 122 [2021-12-06 18:58:01,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 62 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=572, Invalid=3097, Unknown=3, NotChecked=360, Total=4032 [2021-12-06 18:58:01,832 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 582 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 1513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 319 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:01,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [582 Valid, 629 Invalid, 1513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1048 Invalid, 0 Unknown, 319 Unchecked, 0.4s Time] [2021-12-06 18:58:01,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-12-06 18:58:01,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-12-06 18:58:01,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 112 states have (on average 1.1785714285714286) internal successors, (132), 121 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) [2021-12-06 18:58:01,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 132 transitions. [2021-12-06 18:58:01,835 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 132 transitions. Word has length 34 [2021-12-06 18:58:01,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:01,835 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 132 transitions. [2021-12-06 18:58:01,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.702127659574468) internal successors, (80), 48 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:01,835 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 132 transitions. [2021-12-06 18:58:01,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 18:58:01,835 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:01,836 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:01,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 18:58:02,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-06 18:58:02,037 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:58:02,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:02,037 INFO L85 PathProgramCache]: Analyzing trace with hash 449055249, now seen corresponding path program 1 times [2021-12-06 18:58:02,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:58:02,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623702770] [2021-12-06 18:58:02,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:02,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:58:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:02,180 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:02,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:58:02,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623702770] [2021-12-06 18:58:02,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623702770] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:58:02,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937888553] [2021-12-06 18:58:02,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:02,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:58:02,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:58:02,182 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:58:02,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 18:58:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:02,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 46 conjunts are in the unsatisfiable core [2021-12-06 18:58:02,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:02,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:58:02,273 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 18:58:02,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 18:58:02,294 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-06 18:58:02,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 18:58:02,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:58:02,326 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 18:58:02,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2021-12-06 18:58:02,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 17 [2021-12-06 18:58:02,367 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 18:58:02,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 22 treesize of output 27 [2021-12-06 18:58:02,441 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:58:02,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-12-06 18:58:02,520 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:58:02,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-12-06 18:58:02,554 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:02,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:58:02,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 4 [2021-12-06 18:58:03,067 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_dll_circular_create_~head~0#1.offset| Int)) (not (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| (select (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 4) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) 0)))) is different from false [2021-12-06 18:58:03,072 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_dll_circular_create_~head~0#1.offset| Int) (v_ArrVal_1194 (Array Int Int))) (not (= (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_1194) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 4) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) 0) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|))) is different from false [2021-12-06 18:58:03,078 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_dll_circular_create_~head~0#1.offset| Int) (v_ArrVal_1194 (Array Int Int))) (not (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_1194) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 4) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) 0)))) is different from false [2021-12-06 18:58:03,083 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_dll_circular_create_~head~0#1.offset| Int) (v_ArrVal_1194 (Array Int Int)) (v_ArrVal_1193 (Array Int Int))) (not (= (select (store (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_1193) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_1194) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 4) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) 0) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|))) is different from false [2021-12-06 18:58:03,087 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:58:03,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2021-12-06 18:58:03,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 85 treesize of output 81 [2021-12-06 18:58:03,093 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:58:03,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 98 [2021-12-06 18:58:03,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 111 treesize of output 107 [2021-12-06 18:58:03,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 120 treesize of output 118 [2021-12-06 18:58:03,208 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-12-06 18:58:03,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937888553] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:58:03,208 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:58:03,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 17] total 36 [2021-12-06 18:58:03,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067021606] [2021-12-06 18:58:03,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:58:03,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-06 18:58:03,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:58:03,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-06 18:58:03,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=957, Unknown=4, NotChecked=260, Total=1332 [2021-12-06 18:58:03,209 INFO L87 Difference]: Start difference. First operand 122 states and 132 transitions. Second operand has 37 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 37 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:03,757 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|))) (and (= (select |c_#valid| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) 1) (not (= (select .cse0 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|)) (= (select |c_#valid| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) 1) (forall ((|ULTIMATE.start_dll_circular_create_~head~0#1.offset| Int) (v_ArrVal_1194 (Array Int Int))) (not (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_1194) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 4) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) 0)))) (= (select |c_#valid| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) 1) (not (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|)) (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| (select .cse0 0)) (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) (not (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|)) (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 0))) is different from false [2021-12-06 18:58:04,221 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|))) (and (= (select |c_#valid| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) 1) (= (select |c_#valid| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) 1) (not (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| (select .cse0 |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|))) (forall ((|ULTIMATE.start_dll_circular_create_~head~0#1.offset| Int) (v_ArrVal_1194 (Array Int Int))) (not (= (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_1194) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 4) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) 0) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|))) (not (= (select .cse0 0) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|)) (not (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|)))) is different from false [2021-12-06 18:58:04,707 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|))) (and (= (select |c_#valid| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) 1) (not (= (select .cse0 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|)) (forall ((|ULTIMATE.start_dll_circular_create_~head~0#1.offset| Int) (v_ArrVal_1194 (Array Int Int))) (not (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_1194) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 4) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) 0)))) (not (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|)) (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| (select .cse0 0)) (not (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|)) (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 0))) is different from false [2021-12-06 18:58:05,164 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|))) (and (= (select |c_#valid| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) 1) (not (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| (select .cse0 |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|))) (forall ((|ULTIMATE.start_dll_circular_create_~head~0#1.offset| Int) (v_ArrVal_1194 (Array Int Int))) (not (= (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_1194) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 4) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) 0) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|))) (not (= (select .cse0 0) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|)) (not (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|)))) is different from false [2021-12-06 18:58:05,556 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|))) (and (= (select |c_#valid| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) 1) (forall ((|ULTIMATE.start_dll_circular_create_~head~0#1.offset| Int)) (not (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| (select (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 4) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) 0)))) (not (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| (select .cse0 |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|))) (not (= (select .cse0 0) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|)) (not (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|)))) is different from false [2021-12-06 18:58:05,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:05,900 INFO L93 Difference]: Finished difference Result 150 states and 160 transitions. [2021-12-06 18:58:05,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 18:58:05,900 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 37 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-06 18:58:05,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:05,901 INFO L225 Difference]: With dead ends: 150 [2021-12-06 18:58:05,901 INFO L226 Difference]: Without dead ends: 150 [2021-12-06 18:58:05,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=258, Invalid=1749, Unknown=9, NotChecked=846, Total=2862 [2021-12-06 18:58:05,902 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 302 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 455 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:05,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 983 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 694 Invalid, 0 Unknown, 455 Unchecked, 0.2s Time] [2021-12-06 18:58:05,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-12-06 18:58:05,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 127. [2021-12-06 18:58:05,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 117 states have (on average 1.1794871794871795) internal successors, (138), 126 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:05,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 138 transitions. [2021-12-06 18:58:05,905 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 138 transitions. Word has length 34 [2021-12-06 18:58:05,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:05,905 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 138 transitions. [2021-12-06 18:58:05,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 37 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:05,906 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 138 transitions. [2021-12-06 18:58:05,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 18:58:05,906 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:05,906 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:05,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 18:58:06,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:58:06,107 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:58:06,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:06,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1035188976, now seen corresponding path program 2 times [2021-12-06 18:58:06,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:58:06,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701788102] [2021-12-06 18:58:06,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:06,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:58:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:06,133 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:06,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:58:06,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701788102] [2021-12-06 18:58:06,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701788102] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:58:06,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:58:06,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:58:06,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625864965] [2021-12-06 18:58:06,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:58:06,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:58:06,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:58:06,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:58:06,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:58:06,135 INFO L87 Difference]: Start difference. First operand 127 states and 138 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 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) [2021-12-06 18:58:06,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:06,143 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2021-12-06 18:58:06,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:58:06,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 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 34 [2021-12-06 18:58:06,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:06,144 INFO L225 Difference]: With dead ends: 78 [2021-12-06 18:58:06,144 INFO L226 Difference]: Without dead ends: 78 [2021-12-06 18:58:06,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:58:06,144 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 132 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:06,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 95 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:58:06,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-12-06 18:58:06,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-12-06 18:58:06,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 74 states have (on average 1.1081081081081081) internal successors, (82), 77 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:06,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2021-12-06 18:58:06,147 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 34 [2021-12-06 18:58:06,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:06,147 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2021-12-06 18:58:06,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 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) [2021-12-06 18:58:06,147 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2021-12-06 18:58:06,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 18:58:06,147 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:06,147 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:06,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 18:58:06,148 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:58:06,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:06,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1654547908, now seen corresponding path program 1 times [2021-12-06 18:58:06,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:58:06,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236947625] [2021-12-06 18:58:06,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:06,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:58:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:06,495 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:06,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:58:06,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236947625] [2021-12-06 18:58:06,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236947625] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:58:06,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414252814] [2021-12-06 18:58:06,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:06,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:58:06,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:58:06,496 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:58:06,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 18:58:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:06,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 57 conjunts are in the unsatisfiable core [2021-12-06 18:58:06,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:06,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:58:06,604 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 18:58:06,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-06 18:58:06,655 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-06 18:58:06,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 18:58:06,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:58:06,711 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 18:58:06,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-12-06 18:58:06,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 32 treesize of output 30 [2021-12-06 18:58:06,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 28 [2021-12-06 18:58:06,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:58:06,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:58:06,965 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:58:06,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 55 [2021-12-06 18:58:07,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-12-06 18:58:07,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2021-12-06 18:58:07,631 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:07,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:58:08,649 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start__destroy_in_nondeterministic_order_~head#1.offset| Int)) (or (< |ULTIMATE.start__destroy_in_nondeterministic_order_~head#1.offset| 0) (< 0 |ULTIMATE.start__destroy_in_nondeterministic_order_~head#1.offset|) (let ((.cse1 (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset| 4) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|))) (let ((.cse0 (select .cse1 |ULTIMATE.start__destroy_in_nondeterministic_order_~head#1.offset|))) (and (not (= .cse0 (select .cse1 (+ |ULTIMATE.start__destroy_in_nondeterministic_order_~head#1.offset| 4)))) (= (select |c_#valid| .cse0) 1) (not (= .cse0 |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|))))))) is different from false [2021-12-06 18:58:08,893 INFO L354 Elim1Store]: treesize reduction 8, result has 85.5 percent of original size [2021-12-06 18:58:08,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 114 [2021-12-06 18:58:09,157 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start__destroy_in_nondeterministic_order_~head#1.offset| Int)) (or (< |ULTIMATE.start__destroy_in_nondeterministic_order_~head#1.offset| 0) (and (forall ((v_ArrVal_1333 (Array Int Int)) (v_ArrVal_1332 (Array Int Int))) (let ((.cse0 (select (store (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_1332) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_1333) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 4) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) |ULTIMATE.start__destroy_in_nondeterministic_order_~head#1.offset|))) (or (= .cse0 |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) (and (forall ((v_prenex_9 (Array Int Int))) (not (let ((.cse1 (store (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_1332) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_prenex_9) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 4) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|))) (= (select .cse1 |ULTIMATE.start__destroy_in_nondeterministic_order_~head#1.offset|) (select .cse1 (+ |ULTIMATE.start__destroy_in_nondeterministic_order_~head#1.offset| 4)))))) (= .cse0 |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) (forall ((v_prenex_8 (Array Int Int))) (not (= (select (store (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_1332) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_prenex_8) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 4) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) |ULTIMATE.start__destroy_in_nondeterministic_order_~head#1.offset|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|))))))) (forall ((v_prenex_9 (Array Int Int)) (v_ArrVal_1332 (Array Int Int))) (not (let ((.cse2 (store (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_1332) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_prenex_9) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 4) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|))) (= (select .cse2 |ULTIMATE.start__destroy_in_nondeterministic_order_~head#1.offset|) (select .cse2 (+ |ULTIMATE.start__destroy_in_nondeterministic_order_~head#1.offset| 4)))))) (forall ((v_prenex_8 (Array Int Int)) (v_ArrVal_1332 (Array Int Int))) (not (= (select (store (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_1332) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_prenex_8) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 4) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) |ULTIMATE.start__destroy_in_nondeterministic_order_~head#1.offset|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|)))) (< 0 |ULTIMATE.start__destroy_in_nondeterministic_order_~head#1.offset|))) is different from false [2021-12-06 18:58:09,175 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:58:09,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 213 treesize of output 158 [2021-12-06 18:58:09,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 617 treesize of output 597 [2021-12-06 18:58:09,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:58:09,193 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:58:09,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 754 treesize of output 736 [2021-12-06 18:58:09,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:58:09,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 762 treesize of output 738 [2021-12-06 18:58:09,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:58:09,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 782 treesize of output 764 [2021-12-06 18:58:09,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 758 treesize of output 754 [2021-12-06 18:58:09,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 794 treesize of output 786 [2021-12-06 18:58:09,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:58:09,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 870 treesize of output 846 [2021-12-06 18:58:09,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:58:09,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 853 treesize of output 841 [2021-12-06 18:58:09,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 872 treesize of output 864 [2021-12-06 18:58:09,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 890 treesize of output 886 [2021-12-06 18:58:09,850 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-12-06 18:58:09,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414252814] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:58:09,850 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:58:09,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 19] total 53 [2021-12-06 18:58:09,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726088635] [2021-12-06 18:58:09,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:58:09,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-12-06 18:58:09,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:58:09,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-12-06 18:58:09,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=2486, Unknown=2, NotChecked=202, Total=2862 [2021-12-06 18:58:09,852 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand has 54 states, 53 states have (on average 1.7547169811320755) internal successors, (93), 54 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:10,977 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#valid| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|)) (.cse4 (select |c_#valid| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|)) (.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|)) (.cse5 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|)) (.cse6 (select |c_#valid| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|))) (and (= .cse0 1) (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (forall ((|ULTIMATE.start__destroy_in_nondeterministic_order_~head#1.offset| Int)) (or (< |ULTIMATE.start__destroy_in_nondeterministic_order_~head#1.offset| 0) (< 0 |ULTIMATE.start__destroy_in_nondeterministic_order_~head#1.offset|) (let ((.cse2 (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset| 4) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|))) (let ((.cse1 (select .cse2 |ULTIMATE.start__destroy_in_nondeterministic_order_~head#1.offset|))) (and (not (= .cse1 (select .cse2 (+ |ULTIMATE.start__destroy_in_nondeterministic_order_~head#1.offset| 4)))) (= (select |c_#valid| .cse1) 1) (not (= .cse1 |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|))))))) (not (= .cse0 0)) (not (= .cse3 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|)) (not (= 0 .cse4)) (= .cse4 1) (= (select |c_#valid| .cse5) 1) (= .cse6 1) (not (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|)) (= (select |c_#valid| .cse3) 1) (not (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| .cse5)) (not (= .cse3 |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|)) (= |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (not (= |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| .cse5)) (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 0) (not (= .cse6 0)) (not (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|)))) is different from false [2021-12-06 18:58:11,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:11,671 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions. [2021-12-06 18:58:11,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 18:58:11,671 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 1.7547169811320755) internal successors, (93), 54 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-12-06 18:58:11,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:11,672 INFO L225 Difference]: With dead ends: 77 [2021-12-06 18:58:11,672 INFO L226 Difference]: Without dead ends: 77 [2021-12-06 18:58:11,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 67 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 937 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=361, Invalid=3938, Unknown=3, NotChecked=390, Total=4692 [2021-12-06 18:58:11,673 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 126 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 1564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 483 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:11,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 1028 Invalid, 1564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1030 Invalid, 0 Unknown, 483 Unchecked, 0.3s Time] [2021-12-06 18:58:11,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-12-06 18:58:11,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-12-06 18:58:11,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 74 states have (on average 1.0945945945945945) internal successors, (81), 76 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:11,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2021-12-06 18:58:11,675 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 36 [2021-12-06 18:58:11,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:11,675 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2021-12-06 18:58:11,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 1.7547169811320755) internal successors, (93), 54 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:11,676 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2021-12-06 18:58:11,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 18:58:11,676 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:11,676 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:11,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 18:58:11,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-06 18:58:11,877 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:58:11,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:11,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1615055412, now seen corresponding path program 1 times [2021-12-06 18:58:11,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:58:11,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568926094] [2021-12-06 18:58:11,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:11,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:58:11,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:58:11,907 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:58:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:58:11,940 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 18:58:11,940 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 18:58:11,941 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_LEAK (58 of 59 remaining) [2021-12-06 18:58:11,942 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (57 of 59 remaining) [2021-12-06 18:58:11,943 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (56 of 59 remaining) [2021-12-06 18:58:11,943 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (55 of 59 remaining) [2021-12-06 18:58:11,943 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (54 of 59 remaining) [2021-12-06 18:58:11,943 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (53 of 59 remaining) [2021-12-06 18:58:11,943 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (52 of 59 remaining) [2021-12-06 18:58:11,943 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (51 of 59 remaining) [2021-12-06 18:58:11,943 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (50 of 59 remaining) [2021-12-06 18:58:11,943 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (49 of 59 remaining) [2021-12-06 18:58:11,943 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (48 of 59 remaining) [2021-12-06 18:58:11,943 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (47 of 59 remaining) [2021-12-06 18:58:11,943 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (46 of 59 remaining) [2021-12-06 18:58:11,944 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (45 of 59 remaining) [2021-12-06 18:58:11,944 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (44 of 59 remaining) [2021-12-06 18:58:11,944 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (43 of 59 remaining) [2021-12-06 18:58:11,944 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (42 of 59 remaining) [2021-12-06 18:58:11,944 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE (41 of 59 remaining) [2021-12-06 18:58:11,944 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE (40 of 59 remaining) [2021-12-06 18:58:11,944 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE (39 of 59 remaining) [2021-12-06 18:58:11,944 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE (38 of 59 remaining) [2021-12-06 18:58:11,944 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE (37 of 59 remaining) [2021-12-06 18:58:11,944 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE (36 of 59 remaining) [2021-12-06 18:58:11,945 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE (35 of 59 remaining) [2021-12-06 18:58:11,945 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE (34 of 59 remaining) [2021-12-06 18:58:11,945 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE (33 of 59 remaining) [2021-12-06 18:58:11,945 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE (32 of 59 remaining) [2021-12-06 18:58:11,945 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE (31 of 59 remaining) [2021-12-06 18:58:11,945 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE (30 of 59 remaining) [2021-12-06 18:58:11,945 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE (29 of 59 remaining) [2021-12-06 18:58:11,945 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE (28 of 59 remaining) [2021-12-06 18:58:11,945 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE (27 of 59 remaining) [2021-12-06 18:58:11,945 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE (26 of 59 remaining) [2021-12-06 18:58:11,945 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE (25 of 59 remaining) [2021-12-06 18:58:11,946 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE (24 of 59 remaining) [2021-12-06 18:58:11,946 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE (23 of 59 remaining) [2021-12-06 18:58:11,946 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE (22 of 59 remaining) [2021-12-06 18:58:11,946 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE (21 of 59 remaining) [2021-12-06 18:58:11,946 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE (20 of 59 remaining) [2021-12-06 18:58:11,946 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE (19 of 59 remaining) [2021-12-06 18:58:11,946 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE (18 of 59 remaining) [2021-12-06 18:58:11,946 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE (17 of 59 remaining) [2021-12-06 18:58:11,946 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE (16 of 59 remaining) [2021-12-06 18:58:11,946 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE (15 of 59 remaining) [2021-12-06 18:58:11,946 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE (14 of 59 remaining) [2021-12-06 18:58:11,947 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE (13 of 59 remaining) [2021-12-06 18:58:11,947 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_FREE (12 of 59 remaining) [2021-12-06 18:58:11,947 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE (11 of 59 remaining) [2021-12-06 18:58:11,947 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_FREE (10 of 59 remaining) [2021-12-06 18:58:11,947 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_FREE (9 of 59 remaining) [2021-12-06 18:58:11,947 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE (8 of 59 remaining) [2021-12-06 18:58:11,947 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE (7 of 59 remaining) [2021-12-06 18:58:11,947 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE (6 of 59 remaining) [2021-12-06 18:58:11,947 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE (5 of 59 remaining) [2021-12-06 18:58:11,947 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE (4 of 59 remaining) [2021-12-06 18:58:11,948 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE (3 of 59 remaining) [2021-12-06 18:58:11,948 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE (2 of 59 remaining) [2021-12-06 18:58:11,948 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE (1 of 59 remaining) [2021-12-06 18:58:11,948 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE (0 of 59 remaining) [2021-12-06 18:58:11,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-06 18:58:11,950 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:11,953 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 18:58:11,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:58:11 BoogieIcfgContainer [2021-12-06 18:58:11,981 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 18:58:11,981 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 18:58:11,982 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 18:58:11,982 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 18:58:11,982 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:57:40" (3/4) ... [2021-12-06 18:58:11,984 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 18:58:11,984 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 18:58:11,985 INFO L158 Benchmark]: Toolchain (without parser) took 32575.06ms. Allocated memory was 81.8MB in the beginning and 136.3MB in the end (delta: 54.5MB). Free memory was 44.1MB in the beginning and 59.5MB in the end (delta: -15.3MB). Peak memory consumption was 38.4MB. Max. memory is 16.1GB. [2021-12-06 18:58:11,985 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 81.8MB. Free memory was 61.8MB in the beginning and 61.8MB in the end (delta: 78.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:58:11,985 INFO L158 Benchmark]: CACSL2BoogieTranslator took 330.32ms. Allocated memory was 81.8MB in the beginning and 113.2MB in the end (delta: 31.5MB). Free memory was 44.0MB in the beginning and 81.0MB in the end (delta: -37.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 18:58:11,985 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.07ms. Allocated memory is still 113.2MB. Free memory was 81.0MB in the beginning and 78.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:58:11,985 INFO L158 Benchmark]: Boogie Preprocessor took 30.15ms. Allocated memory is still 113.2MB. Free memory was 78.9MB in the beginning and 77.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:58:11,986 INFO L158 Benchmark]: RCFGBuilder took 358.86ms. Allocated memory is still 113.2MB. Free memory was 77.3MB in the beginning and 59.8MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-06 18:58:11,986 INFO L158 Benchmark]: TraceAbstraction took 31803.44ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 59.4MB in the beginning and 59.5MB in the end (delta: -71.1kB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. [2021-12-06 18:58:11,986 INFO L158 Benchmark]: Witness Printer took 2.86ms. Allocated memory is still 136.3MB. Free memory is still 59.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:58:11,987 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 81.8MB. Free memory was 61.8MB in the beginning and 61.8MB in the end (delta: 78.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 330.32ms. Allocated memory was 81.8MB in the beginning and 113.2MB in the end (delta: 31.5MB). Free memory was 44.0MB in the beginning and 81.0MB in the end (delta: -37.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.07ms. Allocated memory is still 113.2MB. Free memory was 81.0MB in the beginning and 78.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.15ms. Allocated memory is still 113.2MB. Free memory was 78.9MB in the beginning and 77.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 358.86ms. Allocated memory is still 113.2MB. Free memory was 77.3MB in the beginning and 59.8MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 31803.44ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 59.4MB in the beginning and 59.5MB in the end (delta: -71.1kB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. * Witness Printer took 2.86ms. Allocated memory is still 136.3MB. Free memory is still 59.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 616]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 616. Possible FailurePath: [L617] const int len = 3; [L618] CALL, EXPR dll_circular_create(len) [L564] DLL last = (DLL) malloc(sizeof(struct node)); [L565] COND FALSE !(((void *)0) == last) VAL [\old(len)=3, last={3:0}, len=3] [L568] last->next = last VAL [\old(len)=3, last={3:0}, len=3] [L569] last->prev = last VAL [\old(len)=3, last={3:0}, len=3] [L570] DLL head = last; VAL [\old(len)=3, head={3:0}, last={3:0}, len=3] [L571] COND TRUE len > 1 [L572] DLL new_head = (DLL) malloc(sizeof(struct node)); [L573] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=3, head={3:0}, last={3:0}, len=3, new_head={-2:0}] [L576] new_head->next = head VAL [\old(len)=3, head={3:0}, last={3:0}, len=3, new_head={-2:0}] [L577] head->prev = new_head VAL [\old(len)=3, head={3:0}, last={3:0}, len=3, new_head={-2:0}] [L578] head = new_head [L579] len-- VAL [\old(len)=3, head={-2:0}, last={3:0}, len=2, new_head={-2:0}] [L571] COND TRUE len > 1 [L572] DLL new_head = (DLL) malloc(sizeof(struct node)); [L573] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=3, head={-2:0}, last={3:0}, len=2, new_head={2:0}] [L576] new_head->next = head VAL [\old(len)=3, head={-2:0}, last={3:0}, len=2, new_head={2:0}] [L577] head->prev = new_head VAL [\old(len)=3, head={-2:0}, last={3:0}, len=2, new_head={2:0}] [L578] head = new_head [L579] len-- VAL [\old(len)=3, head={2:0}, last={3:0}, len=1, new_head={2:0}] [L571] COND FALSE !(len > 1) VAL [\old(len)=3, head={2:0}, last={3:0}, len=1, new_head={2:0}] [L581] last->next = head VAL [\old(len)=3, head={2:0}, last={3:0}, len=1, new_head={2:0}] [L582] head->prev = last VAL [\old(len)=3, head={2:0}, last={3:0}, len=1, new_head={2:0}] [L583] return head; VAL [\old(len)=3, \result={2:0}, head={2:0}, last={3:0}, len=1, new_head={2:0}] [L618] RET, EXPR dll_circular_create(len) [L618] DLL head = dll_circular_create(len); [L619] CALL _destroy_in_nondeterministic_order(head) [L586] EXPR head->prev VAL [head={2:0}, head={2:0}, head->prev={3:0}] [L586] DLL pred = head->prev; [L587] EXPR head->next VAL [head={2:0}, head={2:0}, head->next={-2:0}, pred={3:0}] [L587] DLL succ = head->next; [L588] COND FALSE !(__VERIFIER_nondet_int()) [L597] COND FALSE !(__VERIFIER_nondet_int()) [L607] free(pred) VAL [head={2:0}, head={2:0}, pred={3:0}, succ={-2:0}] [L607] free(pred) VAL [head={2:0}, head={2:0}, pred={3:0}, succ={-2:0}] [L607] free(pred) [L608] COND FALSE !(__VERIFIER_nondet_int()) [L612] free(head) VAL [head={2:0}, head={2:0}, pred={3:0}, succ={-2:0}] [L612] free(head) VAL [head={2:0}, head={2:0}, pred={3:0}, succ={-2:0}] [L612] free(head) [L619] RET _destroy_in_nondeterministic_order(head) [L620] head = ((void *)0) [L621] return 0; VAL [\result=0, head={0:0}, len=3] - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 569]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 569]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 577]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 577]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 582]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 582]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 591]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 591]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 591]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 592]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 592]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 592]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 595]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 595]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 595]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 598]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 598]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 598]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 600]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 600]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 600]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 603]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 603]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 603]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 604]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 604]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 604]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 610]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 610]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 610]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 612]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 612]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 612]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 134 locations, 59 error locations. Started 1 CEGAR loops. OverallTime: 31.7s, OverallIterations: 28, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 13.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7139 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7139 mSDsluCounter, 10202 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 3091 IncrementalHoareTripleChecker+Unchecked, 8095 mSDsCounter, 597 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8192 IncrementalHoareTripleChecker+Invalid, 11880 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 597 mSolverCounterUnsat, 2107 mSDtfsCounter, 8192 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1120 GetRequests, 530 SyntacticMatches, 30 SemanticMatches, 560 ConstructedPredicates, 29 IntricatePredicates, 0 DeprecatedPredicates, 4585 ImplicationChecksByTransitivity, 17.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=0, InterpolantAutomatonStates: 259, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 27 MinimizatonAttempts, 77 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 13.7s InterpolantComputationTime, 1005 NumberOfCodeBlocks, 1005 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 1272 ConstructedInterpolants, 112 QuantifiedInterpolants, 13459 SizeOfPredicates, 188 NumberOfNonLiveVariables, 2528 ConjunctsInSsa, 499 ConjunctsInUnsatCore, 51 InterpolantComputations, 15 PerfectInterpolantSequences, 74/286 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-06 18:58:12,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_nondet_free_order-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa --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 2f737570030041640fd86c7d2770b30b4e6ee4ac0d1c521887700aab87fb1426 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:58:13,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:58:13,571 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:58:13,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:58:13,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:58:13,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:58:13,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:58:13,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:58:13,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:58:13,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:58:13,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:58:13,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:58:13,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:58:13,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:58:13,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:58:13,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:58:13,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:58:13,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:58:13,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:58:13,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:58:13,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:58:13,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:58:13,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:58:13,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:58:13,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:58:13,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:58:13,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:58:13,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:58:13,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:58:13,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:58:13,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:58:13,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:58:13,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:58:13,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:58:13,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:58:13,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:58:13,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:58:13,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:58:13,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:58:13,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:58:13,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:58:13,642 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-06 18:58:13,669 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:58:13,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:58:13,670 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:58:13,670 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:58:13,671 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:58:13,671 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:58:13,672 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:58:13,672 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:58:13,672 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:58:13,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:58:13,672 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:58:13,673 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 18:58:13,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:58:13,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:58:13,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:58:13,673 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 18:58:13,674 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 18:58:13,674 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 18:58:13,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:58:13,674 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 18:58:13,674 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 18:58:13,675 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 18:58:13,675 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:58:13,675 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:58:13,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:58:13,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:58:13,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:58:13,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:58:13,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:58:13,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:58:13,676 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 18:58:13,677 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 18:58:13,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:58:13,677 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 18:58:13,677 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_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f737570030041640fd86c7d2770b30b4e6ee4ac0d1c521887700aab87fb1426 [2021-12-06 18:58:13,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:58:13,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:58:13,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:58:13,935 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:58:13,936 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:58:13,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/list-ext3-properties/dll_nondet_free_order-2.i [2021-12-06 18:58:13,979 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/data/10da64665/b5dc570f7a5949a689793d613ca07914/FLAGafde1de6d [2021-12-06 18:58:14,422 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:58:14,423 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/sv-benchmarks/c/list-ext3-properties/dll_nondet_free_order-2.i [2021-12-06 18:58:14,435 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/data/10da64665/b5dc570f7a5949a689793d613ca07914/FLAGafde1de6d [2021-12-06 18:58:14,445 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/data/10da64665/b5dc570f7a5949a689793d613ca07914 [2021-12-06 18:58:14,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:58:14,449 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:58:14,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:58:14,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:58:14,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:58:14,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:58:14" (1/1) ... [2021-12-06 18:58:14,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76591e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:14, skipping insertion in model container [2021-12-06 18:58:14,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:58:14" (1/1) ... [2021-12-06 18:58:14,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:58:14,483 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:58:14,692 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:58:14,697 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:58:14,727 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:58:14,748 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:58:14,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:14 WrapperNode [2021-12-06 18:58:14,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:58:14,749 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:58:14,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:58:14,749 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:58:14,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:14" (1/1) ... [2021-12-06 18:58:14,766 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:14" (1/1) ... [2021-12-06 18:58:14,783 INFO L137 Inliner]: procedures = 117, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 120 [2021-12-06 18:58:14,784 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:58:14,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:58:14,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:58:14,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:58:14,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:14" (1/1) ... [2021-12-06 18:58:14,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:14" (1/1) ... [2021-12-06 18:58:14,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:14" (1/1) ... [2021-12-06 18:58:14,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:14" (1/1) ... [2021-12-06 18:58:14,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:14" (1/1) ... [2021-12-06 18:58:14,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:14" (1/1) ... [2021-12-06 18:58:14,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:14" (1/1) ... [2021-12-06 18:58:14,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:58:14,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:58:14,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:58:14,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:58:14,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:14" (1/1) ... [2021-12-06 18:58:14,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:58:14,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:58:14,833 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:58:14,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:58:14,862 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-12-06 18:58:14,862 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-12-06 18:58:14,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 18:58:14,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 18:58:14,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 18:58:14,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 18:58:14,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:58:14,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:58:14,943 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:58:14,945 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:58:14,963 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-12-06 18:58:15,253 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:58:15,262 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:58:15,262 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 18:58:15,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:58:15 BoogieIcfgContainer [2021-12-06 18:58:15,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:58:15,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:58:15,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:58:15,269 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:58:15,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:58:14" (1/3) ... [2021-12-06 18:58:15,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59504ffd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:58:15, skipping insertion in model container [2021-12-06 18:58:15,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:14" (2/3) ... [2021-12-06 18:58:15,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59504ffd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:58:15, skipping insertion in model container [2021-12-06 18:58:15,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:58:15" (3/3) ... [2021-12-06 18:58:15,272 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_nondet_free_order-2.i [2021-12-06 18:58:15,277 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:58:15,277 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 59 error locations. [2021-12-06 18:58:15,319 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:58:15,324 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 18:58:15,324 INFO L340 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2021-12-06 18:58:15,340 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 71 states have (on average 1.9577464788732395) internal successors, (139), 131 states have internal predecessors, (139), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:15,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-06 18:58:15,347 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:15,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-06 18:58:15,347 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:58:15,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:15,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1079622, now seen corresponding path program 1 times [2021-12-06 18:58:15,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:58:15,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996450241] [2021-12-06 18:58:15,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:15,360 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:58:15,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:58:15,361 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:58:15,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 18:58:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:15,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 18:58:15,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:15,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:58:15,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:15,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:58:15,513 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:58:15,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [996450241] [2021-12-06 18:58:15,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [996450241] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:58:15,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:58:15,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:58:15,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342119204] [2021-12-06 18:58:15,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:58:15,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:58:15,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:58:15,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:58:15,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:58:15,540 INFO L87 Difference]: Start difference. First operand has 133 states, 71 states have (on average 1.9577464788732395) internal successors, (139), 131 states have internal predecessors, (139), 2 states have call successors, (2), 1 states have call predecessors, (2), 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 2.0) 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) [2021-12-06 18:58:15,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:15,650 INFO L93 Difference]: Finished difference Result 130 states and 137 transitions. [2021-12-06 18:58:15,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:58:15,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) 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 [2021-12-06 18:58:15,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:15,658 INFO L225 Difference]: With dead ends: 130 [2021-12-06 18:58:15,658 INFO L226 Difference]: Without dead ends: 124 [2021-12-06 18:58:15,659 INFO L932 BasicCegarLoop]: 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 [2021-12-06 18:58:15,662 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 50 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:15,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 165 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:58:15,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-12-06 18:58:15,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-12-06 18:58:15,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 68 states have (on average 1.8970588235294117) internal successors, (129), 123 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:15,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 129 transitions. [2021-12-06 18:58:15,692 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 129 transitions. Word has length 4 [2021-12-06 18:58:15,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:15,692 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 129 transitions. [2021-12-06 18:58:15,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) 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) [2021-12-06 18:58:15,692 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 129 transitions. [2021-12-06 18:58:15,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-06 18:58:15,693 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:15,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-06 18:58:15,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:58:15,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:58:15,895 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:58:15,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:15,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1079623, now seen corresponding path program 1 times [2021-12-06 18:58:15,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:58:15,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590501673] [2021-12-06 18:58:15,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:15,900 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:58:15,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:58:15,903 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:58:15,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 18:58:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:16,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:58:16,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:16,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:58:16,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:16,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:58:16,098 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:58:16,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590501673] [2021-12-06 18:58:16,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [590501673] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:58:16,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:58:16,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:58:16,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932784494] [2021-12-06 18:58:16,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:58:16,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:58:16,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:58:16,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:58:16,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:58:16,101 INFO L87 Difference]: Start difference. First operand 124 states and 129 transitions. Second operand has 3 states, 2 states have (on average 2.0) 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) [2021-12-06 18:58:16,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:16,165 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2021-12-06 18:58:16,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:58:16,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) 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 [2021-12-06 18:58:16,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:16,167 INFO L225 Difference]: With dead ends: 121 [2021-12-06 18:58:16,167 INFO L226 Difference]: Without dead ends: 121 [2021-12-06 18:58:16,167 INFO L932 BasicCegarLoop]: 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 [2021-12-06 18:58:16,168 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 122 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:16,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 111 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:58:16,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-12-06 18:58:16,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2021-12-06 18:58:16,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 68 states have (on average 1.8529411764705883) internal successors, (126), 120 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:16,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 126 transitions. [2021-12-06 18:58:16,177 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 126 transitions. Word has length 4 [2021-12-06 18:58:16,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:16,178 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 126 transitions. [2021-12-06 18:58:16,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) 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) [2021-12-06 18:58:16,178 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 126 transitions. [2021-12-06 18:58:16,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 18:58:16,178 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:16,178 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:16,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 18:58:16,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:58:16,379 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:58:16,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:16,380 INFO L85 PathProgramCache]: Analyzing trace with hash 2065247192, now seen corresponding path program 1 times [2021-12-06 18:58:16,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:58:16,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624417261] [2021-12-06 18:58:16,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:16,382 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:58:16,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:58:16,383 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:58:16,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 18:58:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:16,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:58:16,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:16,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:16,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:58:16,441 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:58:16,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [624417261] [2021-12-06 18:58:16,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [624417261] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:58:16,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:58:16,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:58:16,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412408563] [2021-12-06 18:58:16,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:58:16,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:58:16,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:58:16,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:58:16,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:58:16,443 INFO L87 Difference]: Start difference. First operand 121 states and 126 transitions. Second operand has 3 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) [2021-12-06 18:58:16,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:16,458 INFO L93 Difference]: Finished difference Result 130 states and 135 transitions. [2021-12-06 18:58:16,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:58:16,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 18:58:16,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:16,460 INFO L225 Difference]: With dead ends: 130 [2021-12-06 18:58:16,460 INFO L226 Difference]: Without dead ends: 130 [2021-12-06 18:58:16,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:58:16,462 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 8 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:16,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 242 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:58:16,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-06 18:58:16,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 122. [2021-12-06 18:58:16,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 69 states have (on average 1.8405797101449275) internal successors, (127), 121 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:16,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 127 transitions. [2021-12-06 18:58:16,473 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 127 transitions. Word has length 9 [2021-12-06 18:58:16,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:16,474 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 127 transitions. [2021-12-06 18:58:16,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2021-12-06 18:58:16,474 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 127 transitions. [2021-12-06 18:58:16,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 18:58:16,475 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:16,475 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:16,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-06 18:58:16,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:58:16,677 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:58:16,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:16,679 INFO L85 PathProgramCache]: Analyzing trace with hash 2065248729, now seen corresponding path program 1 times [2021-12-06 18:58:16,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:58:16,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [841029318] [2021-12-06 18:58:16,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:16,682 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:58:16,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:58:16,685 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:58:16,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 18:58:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:16,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 18:58:16,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:16,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:58:16,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:16,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:58:16,782 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:58:16,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [841029318] [2021-12-06 18:58:16,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [841029318] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:58:16,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:58:16,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:58:16,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683123419] [2021-12-06 18:58:16,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:58:16,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:58:16,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:58:16,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:58:16,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:58:16,784 INFO L87 Difference]: Start difference. First operand 122 states and 127 transitions. Second operand has 3 states, 2 states have (on average 4.5) 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) [2021-12-06 18:58:16,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:16,864 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2021-12-06 18:58:16,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:58:16,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 18:58:16,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:16,865 INFO L225 Difference]: With dead ends: 121 [2021-12-06 18:58:16,865 INFO L226 Difference]: Without dead ends: 121 [2021-12-06 18:58:16,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:58:16,866 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 40 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:16,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 159 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:58:16,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-12-06 18:58:16,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2021-12-06 18:58:16,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 69 states have (on average 1.826086956521739) internal successors, (126), 120 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:16,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 126 transitions. [2021-12-06 18:58:16,872 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 126 transitions. Word has length 9 [2021-12-06 18:58:16,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:16,872 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 126 transitions. [2021-12-06 18:58:16,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) 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) [2021-12-06 18:58:16,873 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 126 transitions. [2021-12-06 18:58:16,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 18:58:16,873 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:16,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:16,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-06 18:58:17,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:58:17,075 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:58:17,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:17,077 INFO L85 PathProgramCache]: Analyzing trace with hash 2065248730, now seen corresponding path program 1 times [2021-12-06 18:58:17,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:58:17,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726030598] [2021-12-06 18:58:17,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:17,079 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:58:17,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:58:17,082 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:58:17,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-06 18:58:17,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:17,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:58:17,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:17,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:58:17,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:17,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:58:17,192 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:58:17,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726030598] [2021-12-06 18:58:17,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726030598] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:58:17,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:58:17,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:58:17,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810234538] [2021-12-06 18:58:17,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:58:17,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:58:17,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:58:17,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:58:17,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:58:17,193 INFO L87 Difference]: Start difference. First operand 121 states and 126 transitions. Second operand has 3 states, 2 states have (on average 4.5) 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) [2021-12-06 18:58:17,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:17,238 INFO L93 Difference]: Finished difference Result 120 states and 125 transitions. [2021-12-06 18:58:17,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:58:17,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 18:58:17,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:17,240 INFO L225 Difference]: With dead ends: 120 [2021-12-06 18:58:17,240 INFO L226 Difference]: Without dead ends: 120 [2021-12-06 18:58:17,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:58:17,241 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 116 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:17,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 115 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:58:17,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-12-06 18:58:17,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-12-06 18:58:17,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 69 states have (on average 1.8115942028985508) internal successors, (125), 119 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:17,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 125 transitions. [2021-12-06 18:58:17,246 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 125 transitions. Word has length 9 [2021-12-06 18:58:17,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:17,246 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 125 transitions. [2021-12-06 18:58:17,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) 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) [2021-12-06 18:58:17,247 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 125 transitions. [2021-12-06 18:58:17,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 18:58:17,247 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:17,247 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:17,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-06 18:58:17,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:58:17,448 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:58:17,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:17,450 INFO L85 PathProgramCache]: Analyzing trace with hash -401798830, now seen corresponding path program 1 times [2021-12-06 18:58:17,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:58:17,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244951031] [2021-12-06 18:58:17,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:17,452 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:58:17,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:58:17,455 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:58:17,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-06 18:58:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:17,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 18:58:17,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:17,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:58:17,587 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 18:58:17,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2021-12-06 18:58:17,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:17,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:58:17,610 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:58:17,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244951031] [2021-12-06 18:58:17,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1244951031] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:58:17,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:58:17,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:58:17,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244210859] [2021-12-06 18:58:17,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:58:17,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:58:17,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:58:17,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:58:17,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:58:17,611 INFO L87 Difference]: Start difference. First operand 120 states and 125 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:17,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:17,733 INFO L93 Difference]: Finished difference Result 124 states and 129 transitions. [2021-12-06 18:58:17,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:58:17,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-06 18:58:17,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:17,734 INFO L225 Difference]: With dead ends: 124 [2021-12-06 18:58:17,735 INFO L226 Difference]: Without dead ends: 124 [2021-12-06 18:58:17,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:58:17,736 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 76 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:17,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 205 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:58:17,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-12-06 18:58:17,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2021-12-06 18:58:17,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 72 states have (on average 1.7916666666666667) internal successors, (129), 122 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:17,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 129 transitions. [2021-12-06 18:58:17,743 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 129 transitions. Word has length 10 [2021-12-06 18:58:17,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:17,743 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 129 transitions. [2021-12-06 18:58:17,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:17,744 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 129 transitions. [2021-12-06 18:58:17,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 18:58:17,744 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:17,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:17,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-06 18:58:17,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:58:17,946 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:58:17,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:17,948 INFO L85 PathProgramCache]: Analyzing trace with hash -401798829, now seen corresponding path program 1 times [2021-12-06 18:58:17,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:58:17,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59181085] [2021-12-06 18:58:17,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:17,949 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:58:17,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:58:17,952 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:58:17,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-06 18:58:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:18,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 18:58:18,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:18,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:58:18,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:58:18,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:58:18,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 18:58:18,220 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 18:58:18,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-12-06 18:58:18,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:18,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:58:18,243 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:58:18,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59181085] [2021-12-06 18:58:18,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59181085] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:58:18,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:58:18,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:58:18,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828759471] [2021-12-06 18:58:18,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:58:18,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:58:18,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:58:18,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:58:18,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:58:18,244 INFO L87 Difference]: Start difference. First operand 123 states and 129 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:18,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:18,372 INFO L93 Difference]: Finished difference Result 124 states and 129 transitions. [2021-12-06 18:58:18,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:58:18,373 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-06 18:58:18,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:18,374 INFO L225 Difference]: With dead ends: 124 [2021-12-06 18:58:18,374 INFO L226 Difference]: Without dead ends: 124 [2021-12-06 18:58:18,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:58:18,375 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 49 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:18,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 246 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:58:18,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-12-06 18:58:18,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2021-12-06 18:58:18,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 72 states have (on average 1.7777777777777777) internal successors, (128), 122 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:18,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 128 transitions. [2021-12-06 18:58:18,382 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 128 transitions. Word has length 10 [2021-12-06 18:58:18,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:18,382 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 128 transitions. [2021-12-06 18:58:18,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:18,382 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 128 transitions. [2021-12-06 18:58:18,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 18:58:18,382 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:18,383 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:18,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-06 18:58:18,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:58:18,584 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:58:18,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:18,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1662359483, now seen corresponding path program 1 times [2021-12-06 18:58:18,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:58:18,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237617530] [2021-12-06 18:58:18,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:18,588 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:58:18,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:58:18,590 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:58:18,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-06 18:58:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:18,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 18:58:18,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:18,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:18,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:58:18,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:18,832 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:58:18,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237617530] [2021-12-06 18:58:18,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237617530] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:58:18,832 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:58:18,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-12-06 18:58:18,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515991846] [2021-12-06 18:58:18,833 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:58:18,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:58:18,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:58:18,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:58:18,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:58:18,834 INFO L87 Difference]: Start difference. First operand 123 states and 128 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:18,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:18,855 INFO L93 Difference]: Finished difference Result 131 states and 136 transitions. [2021-12-06 18:58:18,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:58:18,856 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-06 18:58:18,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:18,857 INFO L225 Difference]: With dead ends: 131 [2021-12-06 18:58:18,857 INFO L226 Difference]: Without dead ends: 131 [2021-12-06 18:58:18,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:58:18,858 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 19 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:18,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 472 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:58:18,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-12-06 18:58:18,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 125. [2021-12-06 18:58:18,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 74 states have (on average 1.7567567567567568) internal successors, (130), 124 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:18,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 130 transitions. [2021-12-06 18:58:18,862 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 130 transitions. Word has length 14 [2021-12-06 18:58:18,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:18,862 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 130 transitions. [2021-12-06 18:58:18,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:18,862 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 130 transitions. [2021-12-06 18:58:18,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 18:58:18,863 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:18,863 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:18,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-06 18:58:19,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:58:19,064 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:58:19,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:19,065 INFO L85 PathProgramCache]: Analyzing trace with hash 6511237, now seen corresponding path program 1 times [2021-12-06 18:58:19,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:58:19,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162711817] [2021-12-06 18:58:19,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:19,066 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:58:19,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:58:19,068 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:58:19,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-06 18:58:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:19,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 18:58:19,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:19,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:58:19,205 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 18:58:19,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 23 [2021-12-06 18:58:19,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:19,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:58:19,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:19,256 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:58:19,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162711817] [2021-12-06 18:58:19,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [162711817] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:58:19,256 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:58:19,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-12-06 18:58:19,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68756170] [2021-12-06 18:58:19,257 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:58:19,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:58:19,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:58:19,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:58:19,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:58:19,257 INFO L87 Difference]: Start difference. First operand 125 states and 130 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:19,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:19,352 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2021-12-06 18:58:19,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:58:19,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-06 18:58:19,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:19,353 INFO L225 Difference]: With dead ends: 123 [2021-12-06 18:58:19,353 INFO L226 Difference]: Without dead ends: 123 [2021-12-06 18:58:19,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:58:19,354 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 68 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:19,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 208 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:58:19,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-12-06 18:58:19,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-12-06 18:58:19,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 74 states have (on average 1.7297297297297298) internal successors, (128), 122 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:19,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 128 transitions. [2021-12-06 18:58:19,356 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 128 transitions. Word has length 15 [2021-12-06 18:58:19,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:19,357 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 128 transitions. [2021-12-06 18:58:19,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:19,357 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 128 transitions. [2021-12-06 18:58:19,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 18:58:19,357 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:19,357 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:19,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-06 18:58:19,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:58:19,559 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:58:19,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:19,560 INFO L85 PathProgramCache]: Analyzing trace with hash 6511238, now seen corresponding path program 1 times [2021-12-06 18:58:19,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:58:19,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [76338604] [2021-12-06 18:58:19,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:19,562 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:58:19,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:58:19,565 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:58:19,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-06 18:58:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:19,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 18:58:19,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:19,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:58:19,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:58:19,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:58:19,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 18:58:19,749 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 18:58:19,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-12-06 18:58:19,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:19,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:58:22,124 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:22,125 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:58:22,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [76338604] [2021-12-06 18:58:22,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [76338604] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:58:22,125 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:58:22,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-12-06 18:58:22,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226032150] [2021-12-06 18:58:22,125 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:58:22,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:58:22,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:58:22,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:58:22,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=37, Unknown=1, NotChecked=0, Total=56 [2021-12-06 18:58:22,126 INFO L87 Difference]: Start difference. First operand 123 states and 128 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 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) [2021-12-06 18:58:22,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:22,314 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2021-12-06 18:58:22,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:58:22,315 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 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 15 [2021-12-06 18:58:22,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:22,315 INFO L225 Difference]: With dead ends: 121 [2021-12-06 18:58:22,316 INFO L226 Difference]: Without dead ends: 121 [2021-12-06 18:58:22,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=40, Invalid=69, Unknown=1, NotChecked=0, Total=110 [2021-12-06 18:58:22,316 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 277 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:22,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 261 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 62 Invalid, 0 Unknown, 69 Unchecked, 0.1s Time] [2021-12-06 18:58:22,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-12-06 18:58:22,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2021-12-06 18:58:22,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 74 states have (on average 1.7027027027027026) internal successors, (126), 120 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:22,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 126 transitions. [2021-12-06 18:58:22,320 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 126 transitions. Word has length 15 [2021-12-06 18:58:22,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:22,320 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 126 transitions. [2021-12-06 18:58:22,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 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) [2021-12-06 18:58:22,320 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 126 transitions. [2021-12-06 18:58:22,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 18:58:22,321 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:22,321 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:22,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-06 18:58:22,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:58:22,524 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:58:22,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:22,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1580520033, now seen corresponding path program 1 times [2021-12-06 18:58:22,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:58:22,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [736329253] [2021-12-06 18:58:22,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:22,527 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:58:22,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:58:22,530 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:58:22,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-06 18:58:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:22,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 18:58:22,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:22,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:58:22,656 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:58:22,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:58:22,656 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:58:22,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [736329253] [2021-12-06 18:58:22,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [736329253] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:58:22,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:58:22,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:58:22,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102882980] [2021-12-06 18:58:22,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:58:22,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:58:22,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:58:22,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:58:22,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:58:22,658 INFO L87 Difference]: Start difference. First operand 121 states and 126 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:22,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:22,874 INFO L93 Difference]: Finished difference Result 118 states and 123 transitions. [2021-12-06 18:58:22,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:58:22,874 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have 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 [2021-12-06 18:58:22,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:22,875 INFO L225 Difference]: With dead ends: 118 [2021-12-06 18:58:22,875 INFO L226 Difference]: Without dead ends: 118 [2021-12-06 18:58:22,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:58:22,876 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 106 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:22,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 303 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:58:22,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-12-06 18:58:22,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-12-06 18:58:22,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 74 states have (on average 1.662162162162162) internal successors, (123), 117 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:22,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 123 transitions. [2021-12-06 18:58:22,878 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 123 transitions. Word has length 22 [2021-12-06 18:58:22,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:22,879 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 123 transitions. [2021-12-06 18:58:22,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:22,879 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 123 transitions. [2021-12-06 18:58:22,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 18:58:22,879 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:22,879 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:22,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-12-06 18:58:23,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:58:23,080 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:58:23,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:23,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1580520034, now seen corresponding path program 1 times [2021-12-06 18:58:23,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:58:23,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509861589] [2021-12-06 18:58:23,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:23,082 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:58:23,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:58:23,083 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:58:23,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-06 18:58:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:23,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 18:58:23,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:23,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:58:23,264 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:58:23,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:58:23,265 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:58:23,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509861589] [2021-12-06 18:58:23,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [509861589] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:58:23,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:58:23,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:58:23,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013320001] [2021-12-06 18:58:23,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:58:23,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:58:23,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:58:23,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:58:23,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:58:23,266 INFO L87 Difference]: Start difference. First operand 118 states and 123 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:23,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:23,458 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2021-12-06 18:58:23,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:58:23,459 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have 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 [2021-12-06 18:58:23,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:23,459 INFO L225 Difference]: With dead ends: 111 [2021-12-06 18:58:23,460 INFO L226 Difference]: Without dead ends: 111 [2021-12-06 18:58:23,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:58:23,460 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 388 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:23,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 89 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:58:23,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-12-06 18:58:23,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-12-06 18:58:23,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 74 states have (on average 1.5675675675675675) internal successors, (116), 110 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:23,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 116 transitions. [2021-12-06 18:58:23,463 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 116 transitions. Word has length 22 [2021-12-06 18:58:23,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:23,463 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 116 transitions. [2021-12-06 18:58:23,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:23,463 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 116 transitions. [2021-12-06 18:58:23,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 18:58:23,464 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:23,464 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:23,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-06 18:58:23,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:58:23,665 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:58:23,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:23,665 INFO L85 PathProgramCache]: Analyzing trace with hash 67241285, now seen corresponding path program 1 times [2021-12-06 18:58:23,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:58:23,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802778884] [2021-12-06 18:58:23,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:23,666 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:58:23,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:58:23,666 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:58:23,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-06 18:58:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:23,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 18:58:23,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:24,074 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:58:24,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:58:24,075 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:58:24,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [802778884] [2021-12-06 18:58:24,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [802778884] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:58:24,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:58:24,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:58:24,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211635630] [2021-12-06 18:58:24,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:58:24,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:58:24,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:58:24,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:58:24,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:58:24,076 INFO L87 Difference]: Start difference. First operand 111 states and 116 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:24,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:24,108 INFO L93 Difference]: Finished difference Result 110 states and 115 transitions. [2021-12-06 18:58:24,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:58:24,109 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-06 18:58:24,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:24,109 INFO L225 Difference]: With dead ends: 110 [2021-12-06 18:58:24,109 INFO L226 Difference]: Without dead ends: 110 [2021-12-06 18:58:24,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:58:24,110 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 67 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:24,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 206 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 17 Invalid, 0 Unknown, 76 Unchecked, 0.0s Time] [2021-12-06 18:58:24,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-12-06 18:58:24,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-12-06 18:58:24,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 74 states have (on average 1.554054054054054) internal successors, (115), 109 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:24,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 115 transitions. [2021-12-06 18:58:24,113 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 115 transitions. Word has length 28 [2021-12-06 18:58:24,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:24,113 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 115 transitions. [2021-12-06 18:58:24,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:24,113 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 115 transitions. [2021-12-06 18:58:24,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 18:58:24,114 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:24,114 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:24,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-12-06 18:58:24,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:58:24,315 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:58:24,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:24,315 INFO L85 PathProgramCache]: Analyzing trace with hash 67280267, now seen corresponding path program 1 times [2021-12-06 18:58:24,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:58:24,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [901269437] [2021-12-06 18:58:24,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:24,316 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:58:24,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:58:24,316 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:58:24,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-06 18:58:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:24,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 18:58:24,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:24,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2021-12-06 18:58:24,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 7 [2021-12-06 18:58:24,529 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:58:24,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:58:24,529 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:58:24,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [901269437] [2021-12-06 18:58:24,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [901269437] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:58:24,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:58:24,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 18:58:24,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738400020] [2021-12-06 18:58:24,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:58:24,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 18:58:24,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:58:24,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 18:58:24,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:58:24,531 INFO L87 Difference]: Start difference. First operand 110 states and 115 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:24,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:24,832 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2021-12-06 18:58:24,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:58:24,833 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-06 18:58:24,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:24,833 INFO L225 Difference]: With dead ends: 105 [2021-12-06 18:58:24,833 INFO L226 Difference]: Without dead ends: 105 [2021-12-06 18:58:24,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-12-06 18:58:24,834 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 532 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:24,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 144 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:58:24,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-12-06 18:58:24,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2021-12-06 18:58:24,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 74 states have (on average 1.4864864864864864) internal successors, (110), 104 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:24,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 110 transitions. [2021-12-06 18:58:24,837 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 110 transitions. Word has length 28 [2021-12-06 18:58:24,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:24,837 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 110 transitions. [2021-12-06 18:58:24,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:24,838 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 110 transitions. [2021-12-06 18:58:24,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 18:58:24,838 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:24,839 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:24,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-06 18:58:25,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:58:25,040 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:58:25,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:25,041 INFO L85 PathProgramCache]: Analyzing trace with hash 67279051, now seen corresponding path program 1 times [2021-12-06 18:58:25,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:58:25,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505197402] [2021-12-06 18:58:25,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:25,044 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:58:25,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:58:25,047 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:58:25,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-06 18:58:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:25,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-06 18:58:25,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:25,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:58:25,277 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-06 18:58:25,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2021-12-06 18:58:25,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:58:25,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 18:58:25,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2021-12-06 18:58:25,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:58:25,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-12-06 18:58:25,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 7 [2021-12-06 18:58:25,527 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:25,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:58:25,634 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_370 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_370) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (_ bv0 32))) is different from false [2021-12-06 18:58:25,643 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_370 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_370) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) (_ bv0 32))) is different from false [2021-12-06 18:58:25,651 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_368 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_370 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_368) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_370) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) (_ bv0 32))) is different from false [2021-12-06 18:58:25,659 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:58:25,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 22 [2021-12-06 18:58:25,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 60 treesize of output 52 [2021-12-06 18:58:25,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 48 treesize of output 44 [2021-12-06 18:58:25,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 20 [2021-12-06 18:58:25,964 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 18:58:25,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 56 [2021-12-06 18:58:25,995 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-12-06 18:58:25,995 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:58:25,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505197402] [2021-12-06 18:58:25,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1505197402] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:58:25,995 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:58:25,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2021-12-06 18:58:25,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973573559] [2021-12-06 18:58:25,995 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:58:25,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 18:58:25,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:58:25,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 18:58:25,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=411, Unknown=3, NotChecked=126, Total=600 [2021-12-06 18:58:25,996 INFO L87 Difference]: Start difference. First operand 105 states and 110 transitions. Second operand has 25 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 25 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:26,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:26,947 INFO L93 Difference]: Finished difference Result 104 states and 109 transitions. [2021-12-06 18:58:26,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 18:58:26,948 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 25 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-06 18:58:26,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:26,948 INFO L225 Difference]: With dead ends: 104 [2021-12-06 18:58:26,949 INFO L226 Difference]: Without dead ends: 104 [2021-12-06 18:58:26,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=173, Invalid=958, Unknown=3, NotChecked=198, Total=1332 [2021-12-06 18:58:26,950 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 427 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 504 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:26,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 531 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 433 Invalid, 0 Unknown, 504 Unchecked, 0.4s Time] [2021-12-06 18:58:26,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-12-06 18:58:26,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2021-12-06 18:58:26,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 74 states have (on average 1.4324324324324325) internal successors, (106), 100 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:26,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 106 transitions. [2021-12-06 18:58:26,952 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 106 transitions. Word has length 28 [2021-12-06 18:58:26,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:26,952 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 106 transitions. [2021-12-06 18:58:26,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 25 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:26,953 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 106 transitions. [2021-12-06 18:58:26,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 18:58:26,953 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:26,953 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:26,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-12-06 18:58:27,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:58:27,154 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:58:27,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:27,154 INFO L85 PathProgramCache]: Analyzing trace with hash 2085688457, now seen corresponding path program 1 times [2021-12-06 18:58:27,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:58:27,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455952035] [2021-12-06 18:58:27,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:27,155 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:58:27,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:58:27,155 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:58:27,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-06 18:58:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:27,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-06 18:58:27,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:27,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 18:58:27,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 11 [2021-12-06 18:58:27,517 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:58:27,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:58:27,517 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:58:27,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455952035] [2021-12-06 18:58:27,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455952035] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:58:27,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:58:27,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 18:58:27,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221236210] [2021-12-06 18:58:27,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:58:27,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:58:27,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:58:27,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:58:27,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:58:27,519 INFO L87 Difference]: Start difference. First operand 101 states and 106 transitions. Second operand has 11 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:28,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:28,217 INFO L93 Difference]: Finished difference Result 96 states and 101 transitions. [2021-12-06 18:58:28,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 18:58:28,218 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-06 18:58:28,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:28,219 INFO L225 Difference]: With dead ends: 96 [2021-12-06 18:58:28,219 INFO L226 Difference]: Without dead ends: 96 [2021-12-06 18:58:28,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2021-12-06 18:58:28,220 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 653 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:28,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [653 Valid, 67 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 18:58:28,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-12-06 18:58:28,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-12-06 18:58:28,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 74 states have (on average 1.364864864864865) internal successors, (101), 95 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:28,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 101 transitions. [2021-12-06 18:58:28,222 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 101 transitions. Word has length 29 [2021-12-06 18:58:28,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:28,222 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 101 transitions. [2021-12-06 18:58:28,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:28,222 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 101 transitions. [2021-12-06 18:58:28,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 18:58:28,223 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:28,223 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:28,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-12-06 18:58:28,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:58:28,424 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:58:28,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:28,425 INFO L85 PathProgramCache]: Analyzing trace with hash 2085650723, now seen corresponding path program 1 times [2021-12-06 18:58:28,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:58:28,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [188463889] [2021-12-06 18:58:28,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:28,427 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:58:28,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:58:28,429 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:58:28,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-06 18:58:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:28,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-06 18:58:28,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:28,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:58:28,662 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-06 18:58:28,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2021-12-06 18:58:28,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:58:28,756 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 18:58:28,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2021-12-06 18:58:28,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 22 [2021-12-06 18:58:28,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:58:28,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 24 [2021-12-06 18:58:28,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 11 [2021-12-06 18:58:29,030 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:29,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:58:29,281 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_458 (Array (_ BitVec 32) (_ BitVec 32)))) (bvult (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_458) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) |c_#StackHeapBarrier|)) is different from false [2021-12-06 18:58:29,380 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:58:29,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 22 [2021-12-06 18:58:29,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 122 treesize of output 110 [2021-12-06 18:58:29,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 106 treesize of output 98 [2021-12-06 18:58:29,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 51 treesize of output 47 [2021-12-06 18:58:29,815 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 18:58:29,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 58 [2021-12-06 18:58:29,845 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-12-06 18:58:29,845 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:58:29,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [188463889] [2021-12-06 18:58:29,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [188463889] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:58:29,845 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:58:29,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2021-12-06 18:58:29,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716096364] [2021-12-06 18:58:29,845 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:58:29,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 18:58:29,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:58:29,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 18:58:29,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=469, Unknown=23, NotChecked=44, Total=600 [2021-12-06 18:58:29,846 INFO L87 Difference]: Start difference. First operand 96 states and 101 transitions. Second operand has 25 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 25 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:31,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:31,585 INFO L93 Difference]: Finished difference Result 181 states and 190 transitions. [2021-12-06 18:58:31,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 18:58:31,586 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 25 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-06 18:58:31,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:31,587 INFO L225 Difference]: With dead ends: 181 [2021-12-06 18:58:31,587 INFO L226 Difference]: Without dead ends: 181 [2021-12-06 18:58:31,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=137, Invalid=895, Unknown=28, NotChecked=62, Total=1122 [2021-12-06 18:58:31,587 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 489 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 618 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:31,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 661 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 640 Invalid, 0 Unknown, 618 Unchecked, 1.1s Time] [2021-12-06 18:58:31,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-12-06 18:58:31,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 133. [2021-12-06 18:58:31,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 111 states have (on average 1.3243243243243243) internal successors, (147), 132 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:31,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 147 transitions. [2021-12-06 18:58:31,591 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 147 transitions. Word has length 29 [2021-12-06 18:58:31,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:31,591 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 147 transitions. [2021-12-06 18:58:31,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 25 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:31,591 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 147 transitions. [2021-12-06 18:58:31,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 18:58:31,591 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:31,592 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:31,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-12-06 18:58:31,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:58:31,793 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:58:31,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:31,794 INFO L85 PathProgramCache]: Analyzing trace with hash 231832909, now seen corresponding path program 1 times [2021-12-06 18:58:31,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:58:31,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2065463363] [2021-12-06 18:58:31,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:31,796 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:58:31,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:58:31,799 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:58:31,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-06 18:58:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:31,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 18:58:31,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:31,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2021-12-06 18:58:31,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 15 [2021-12-06 18:58:31,988 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:58:31,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:58:31,989 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:58:31,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2065463363] [2021-12-06 18:58:31,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2065463363] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:58:31,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:58:31,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 18:58:31,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517583144] [2021-12-06 18:58:31,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:58:31,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 18:58:31,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:58:31,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 18:58:31,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:58:31,990 INFO L87 Difference]: Start difference. First operand 133 states and 147 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 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) [2021-12-06 18:58:32,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:32,433 INFO L93 Difference]: Finished difference Result 132 states and 145 transitions. [2021-12-06 18:58:32,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:58:32,434 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 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 30 [2021-12-06 18:58:32,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:32,434 INFO L225 Difference]: With dead ends: 132 [2021-12-06 18:58:32,434 INFO L226 Difference]: Without dead ends: 132 [2021-12-06 18:58:32,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2021-12-06 18:58:32,435 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 219 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:32,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 311 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:58:32,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-12-06 18:58:32,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2021-12-06 18:58:32,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 111 states have (on average 1.3063063063063063) internal successors, (145), 131 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:32,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 145 transitions. [2021-12-06 18:58:32,438 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 145 transitions. Word has length 30 [2021-12-06 18:58:32,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:32,438 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 145 transitions. [2021-12-06 18:58:32,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 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) [2021-12-06 18:58:32,438 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 145 transitions. [2021-12-06 18:58:32,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 18:58:32,439 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:32,439 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:32,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-12-06 18:58:32,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:58:32,640 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:58:32,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:32,641 INFO L85 PathProgramCache]: Analyzing trace with hash 230663117, now seen corresponding path program 1 times [2021-12-06 18:58:32,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:58:32,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269803100] [2021-12-06 18:58:32,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:32,642 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:58:32,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:58:32,645 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:58:32,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-06 18:58:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:32,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-06 18:58:32,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:32,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:58:32,818 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-06 18:58:32,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 33 [2021-12-06 18:58:32,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:58:32,883 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 18:58:32,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2021-12-06 18:58:32,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 31 treesize of output 31 [2021-12-06 18:58:32,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:58:32,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 38 treesize of output 33 [2021-12-06 18:58:33,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 40 treesize of output 28 [2021-12-06 18:58:33,159 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:33,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:58:33,370 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_546 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_546) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|))))))))))))))))))))))) is different from false [2021-12-06 18:58:33,383 INFO L354 Elim1Store]: treesize reduction 5, result has 72.2 percent of original size [2021-12-06 18:58:33,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 47 [2021-12-06 18:58:33,390 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_544 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_546 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_544) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_546) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|)) is different from false [2021-12-06 18:58:33,397 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:58:33,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 22 [2021-12-06 18:58:33,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 122 treesize of output 110 [2021-12-06 18:58:33,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 90 treesize of output 82 [2021-12-06 18:58:33,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 43 treesize of output 39 [2021-12-06 18:58:33,544 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 18:58:33,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 65 [2021-12-06 18:58:33,573 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-06 18:58:33,574 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:58:33,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [269803100] [2021-12-06 18:58:33,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [269803100] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:58:33,574 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:58:33,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 22 [2021-12-06 18:58:33,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071276493] [2021-12-06 18:58:33,574 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:58:33,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-06 18:58:33,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:58:33,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-06 18:58:33,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=369, Unknown=4, NotChecked=78, Total=506 [2021-12-06 18:58:33,575 INFO L87 Difference]: Start difference. First operand 132 states and 145 transitions. Second operand has 23 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 23 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:34,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:34,802 INFO L93 Difference]: Finished difference Result 131 states and 144 transitions. [2021-12-06 18:58:34,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 18:58:34,803 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 23 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-06 18:58:34,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:34,804 INFO L225 Difference]: With dead ends: 131 [2021-12-06 18:58:34,804 INFO L226 Difference]: Without dead ends: 131 [2021-12-06 18:58:34,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 31 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=196, Invalid=864, Unknown=4, NotChecked=126, Total=1190 [2021-12-06 18:58:34,804 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 162 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 172 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:34,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 684 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 538 Invalid, 0 Unknown, 172 Unchecked, 0.6s Time] [2021-12-06 18:58:34,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-12-06 18:58:34,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-12-06 18:58:34,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 111 states have (on average 1.2972972972972974) internal successors, (144), 130 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:34,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 144 transitions. [2021-12-06 18:58:34,807 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 144 transitions. Word has length 30 [2021-12-06 18:58:34,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:34,807 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 144 transitions. [2021-12-06 18:58:34,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 23 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:34,808 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 144 transitions. [2021-12-06 18:58:34,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 18:58:34,808 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:34,808 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:34,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-12-06 18:58:35,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:58:35,009 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:58:35,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:35,010 INFO L85 PathProgramCache]: Analyzing trace with hash 823875782, now seen corresponding path program 1 times [2021-12-06 18:58:35,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:58:35,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [607184090] [2021-12-06 18:58:35,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:35,012 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:58:35,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:58:35,014 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:58:35,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-06 18:58:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:35,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-06 18:58:35,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:35,233 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 18:58:35,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-12-06 18:58:35,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 18:58:35,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 34 treesize of output 22 [2021-12-06 18:58:35,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2021-12-06 18:58:35,652 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:35,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:58:37,131 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 18:58:37,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 18:58:37,142 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:37,142 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:58:37,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [607184090] [2021-12-06 18:58:37,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [607184090] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:58:37,142 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:58:37,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 20 [2021-12-06 18:58:37,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113650183] [2021-12-06 18:58:37,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:58:37,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-06 18:58:37,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:58:37,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 18:58:37,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2021-12-06 18:58:37,143 INFO L87 Difference]: Start difference. First operand 131 states and 144 transitions. Second operand has 21 states, 20 states have (on average 2.75) internal successors, (55), 21 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:37,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:37,307 INFO L93 Difference]: Finished difference Result 130 states and 142 transitions. [2021-12-06 18:58:37,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 18:58:37,308 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.75) internal successors, (55), 21 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-06 18:58:37,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:37,308 INFO L225 Difference]: With dead ends: 130 [2021-12-06 18:58:37,308 INFO L226 Difference]: Without dead ends: 130 [2021-12-06 18:58:37,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 41 SyntacticMatches, 9 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2021-12-06 18:58:37,309 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 21 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 314 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:37,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 520 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 314 Unchecked, 0.1s Time] [2021-12-06 18:58:37,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-06 18:58:37,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-12-06 18:58:37,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 111 states have (on average 1.2792792792792793) internal successors, (142), 129 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:37,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 142 transitions. [2021-12-06 18:58:37,312 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 142 transitions. Word has length 33 [2021-12-06 18:58:37,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:37,312 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 142 transitions. [2021-12-06 18:58:37,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.75) internal successors, (55), 21 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:37,312 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 142 transitions. [2021-12-06 18:58:37,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 18:58:37,312 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:37,312 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:37,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-12-06 18:58:37,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:58:37,514 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:58:37,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:37,515 INFO L85 PathProgramCache]: Analyzing trace with hash 823444806, now seen corresponding path program 1 times [2021-12-06 18:58:37,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:58:37,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333513571] [2021-12-06 18:58:37,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:37,516 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:58:37,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:58:37,518 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:58:37,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-06 18:58:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:37,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-06 18:58:37,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:37,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:58:37,776 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-12-06 18:58:37,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 53 [2021-12-06 18:58:37,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:58:37,907 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 18:58:37,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 50 [2021-12-06 18:58:38,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 32 treesize of output 32 [2021-12-06 18:58:38,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:58:38,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 39 treesize of output 34 [2021-12-06 18:58:38,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 40 treesize of output 28 [2021-12-06 18:58:38,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-12-06 18:58:38,316 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:38,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:58:38,550 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_641 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_641) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|)))))))))))))))))) (_ bv1 1)))) (forall ((v_ArrVal_641 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_641) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|)))) is different from false [2021-12-06 18:58:38,565 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_641 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_641) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|)))))))))))))))))))))) (forall ((v_ArrVal_641 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_641) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|)))) is different from false [2021-12-06 18:58:38,655 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:58:38,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2021-12-06 18:58:38,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 65 treesize of output 57 [2021-12-06 18:58:38,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 4 [2021-12-06 18:58:38,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 4 [2021-12-06 18:58:38,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 4 [2021-12-06 18:58:38,684 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 18:58:38,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 1 [2021-12-06 18:58:38,818 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 18:58:38,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 75 [2021-12-06 18:58:38,841 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-12-06 18:58:38,842 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:58:38,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1333513571] [2021-12-06 18:58:38,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1333513571] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:58:38,842 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:58:38,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 23 [2021-12-06 18:58:38,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618736402] [2021-12-06 18:58:38,842 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:58:38,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-06 18:58:38,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:58:38,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-06 18:58:38,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=406, Unknown=3, NotChecked=82, Total=552 [2021-12-06 18:58:38,843 INFO L87 Difference]: Start difference. First operand 130 states and 142 transitions. Second operand has 24 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 24 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:40,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:40,095 INFO L93 Difference]: Finished difference Result 163 states and 179 transitions. [2021-12-06 18:58:40,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 18:58:40,096 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 24 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-06 18:58:40,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:40,097 INFO L225 Difference]: With dead ends: 163 [2021-12-06 18:58:40,097 INFO L226 Difference]: Without dead ends: 163 [2021-12-06 18:58:40,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 35 SyntacticMatches, 11 SemanticMatches, 34 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=164, Invalid=963, Unknown=3, NotChecked=130, Total=1260 [2021-12-06 18:58:40,098 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 107 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 358 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:40,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 815 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 535 Invalid, 0 Unknown, 358 Unchecked, 0.5s Time] [2021-12-06 18:58:40,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-12-06 18:58:40,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 151. [2021-12-06 18:58:40,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 132 states have (on average 1.2651515151515151) internal successors, (167), 150 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:40,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 167 transitions. [2021-12-06 18:58:40,101 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 167 transitions. Word has length 33 [2021-12-06 18:58:40,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:40,101 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 167 transitions. [2021-12-06 18:58:40,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 24 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:40,101 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 167 transitions. [2021-12-06 18:58:40,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 18:58:40,101 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:40,101 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:40,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-12-06 18:58:40,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:58:40,302 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:58:40,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:40,303 INFO L85 PathProgramCache]: Analyzing trace with hash 226977724, now seen corresponding path program 1 times [2021-12-06 18:58:40,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:58:40,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1837145611] [2021-12-06 18:58:40,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:40,305 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:58:40,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:58:40,307 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:58:40,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-12-06 18:58:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:40,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 18:58:40,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:40,688 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:58:40,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:58:40,689 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:58:40,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1837145611] [2021-12-06 18:58:40,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1837145611] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:58:40,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:58:40,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:58:40,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208896963] [2021-12-06 18:58:40,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:58:40,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:58:40,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:58:40,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:58:40,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:58:40,690 INFO L87 Difference]: Start difference. First operand 151 states and 167 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:40,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:40,693 INFO L93 Difference]: Finished difference Result 150 states and 166 transitions. [2021-12-06 18:58:40,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:58:40,694 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-06 18:58:40,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:40,695 INFO L225 Difference]: With dead ends: 150 [2021-12-06 18:58:40,695 INFO L226 Difference]: Without dead ends: 150 [2021-12-06 18:58:40,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:58:40,695 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 25 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:40,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 246 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 36 Unchecked, 0.0s Time] [2021-12-06 18:58:40,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-12-06 18:58:40,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2021-12-06 18:58:40,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 132 states have (on average 1.2575757575757576) internal successors, (166), 149 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:40,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 166 transitions. [2021-12-06 18:58:40,698 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 166 transitions. Word has length 33 [2021-12-06 18:58:40,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:40,699 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 166 transitions. [2021-12-06 18:58:40,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:40,699 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 166 transitions. [2021-12-06 18:58:40,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 18:58:40,699 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:40,699 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:40,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-12-06 18:58:40,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:58:40,900 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:58:40,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:40,901 INFO L85 PathProgramCache]: Analyzing trace with hash 226963822, now seen corresponding path program 1 times [2021-12-06 18:58:40,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:58:40,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274650255] [2021-12-06 18:58:40,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:40,903 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:58:40,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:58:40,905 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:58:40,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-12-06 18:58:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:41,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 18:58:41,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:41,336 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:58:41,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:58:41,337 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:58:41,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274650255] [2021-12-06 18:58:41,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1274650255] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:58:41,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:58:41,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:58:41,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591997954] [2021-12-06 18:58:41,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:58:41,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:58:41,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:58:41,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:58:41,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:58:41,338 INFO L87 Difference]: Start difference. First operand 150 states and 166 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:41,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:41,341 INFO L93 Difference]: Finished difference Result 149 states and 164 transitions. [2021-12-06 18:58:41,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:58:41,342 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-06 18:58:41,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:41,343 INFO L225 Difference]: With dead ends: 149 [2021-12-06 18:58:41,343 INFO L226 Difference]: Without dead ends: 149 [2021-12-06 18:58:41,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:58:41,343 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 28 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:41,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 313 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 91 Unchecked, 0.0s Time] [2021-12-06 18:58:41,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-12-06 18:58:41,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2021-12-06 18:58:41,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 132 states have (on average 1.2424242424242424) internal successors, (164), 148 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:41,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 164 transitions. [2021-12-06 18:58:41,347 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 164 transitions. Word has length 33 [2021-12-06 18:58:41,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:41,347 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 164 transitions. [2021-12-06 18:58:41,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:41,347 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 164 transitions. [2021-12-06 18:58:41,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 18:58:41,347 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:41,347 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:41,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-12-06 18:58:41,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:58:41,548 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:58:41,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:41,549 INFO L85 PathProgramCache]: Analyzing trace with hash -262609016, now seen corresponding path program 1 times [2021-12-06 18:58:41,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:58:41,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245425187] [2021-12-06 18:58:41,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:41,551 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:58:41,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:58:41,553 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:58:41,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-12-06 18:58:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:41,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 18:58:41,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:41,988 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:58:41,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:58:41,989 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:58:41,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245425187] [2021-12-06 18:58:41,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1245425187] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:58:41,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:58:41,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:58:41,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036634925] [2021-12-06 18:58:41,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:58:41,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:58:41,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:58:41,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:58:41,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:58:41,990 INFO L87 Difference]: Start difference. First operand 149 states and 164 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:42,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:42,003 INFO L93 Difference]: Finished difference Result 148 states and 163 transitions. [2021-12-06 18:58:42,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:58:42,004 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-06 18:58:42,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:42,005 INFO L225 Difference]: With dead ends: 148 [2021-12-06 18:58:42,005 INFO L226 Difference]: Without dead ends: 148 [2021-12-06 18:58:42,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:58:42,005 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 47 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 92 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:42,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 209 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 92 Unchecked, 0.0s Time] [2021-12-06 18:58:42,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-12-06 18:58:42,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-12-06 18:58:42,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 132 states have (on average 1.2348484848484849) internal successors, (163), 147 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:42,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 163 transitions. [2021-12-06 18:58:42,008 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 163 transitions. Word has length 33 [2021-12-06 18:58:42,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:42,008 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 163 transitions. [2021-12-06 18:58:42,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:42,009 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 163 transitions. [2021-12-06 18:58:42,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 18:58:42,009 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:42,009 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:42,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-12-06 18:58:42,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:58:42,210 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:58:42,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:42,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1553624943, now seen corresponding path program 1 times [2021-12-06 18:58:42,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:58:42,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396542703] [2021-12-06 18:58:42,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:42,213 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:58:42,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:58:42,215 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:58:42,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-12-06 18:58:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:42,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-06 18:58:42,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:42,514 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 18:58:42,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-12-06 18:58:42,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 18:58:42,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 16 [2021-12-06 18:58:42,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2021-12-06 18:58:42,883 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:42,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:58:43,279 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 18:58:43,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 18:58:43,289 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:43,289 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:58:43,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396542703] [2021-12-06 18:58:43,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396542703] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:58:43,289 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:58:43,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-12-06 18:58:43,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198687477] [2021-12-06 18:58:43,289 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:58:43,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 18:58:43,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:58:43,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 18:58:43,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-12-06 18:58:43,290 INFO L87 Difference]: Start difference. First operand 148 states and 163 transitions. Second operand has 19 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 19 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:43,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:43,371 INFO L93 Difference]: Finished difference Result 146 states and 160 transitions. [2021-12-06 18:58:43,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 18:58:43,372 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 19 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-06 18:58:43,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:43,373 INFO L225 Difference]: With dead ends: 146 [2021-12-06 18:58:43,373 INFO L226 Difference]: Without dead ends: 146 [2021-12-06 18:58:43,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-12-06 18:58:43,374 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 15 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 329 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:43,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 650 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 329 Unchecked, 0.1s Time] [2021-12-06 18:58:43,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-12-06 18:58:43,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-12-06 18:58:43,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 132 states have (on average 1.2121212121212122) internal successors, (160), 145 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:43,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 160 transitions. [2021-12-06 18:58:43,378 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 160 transitions. Word has length 34 [2021-12-06 18:58:43,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:43,378 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 160 transitions. [2021-12-06 18:58:43,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 19 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:43,378 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 160 transitions. [2021-12-06 18:58:43,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 18:58:43,379 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:43,379 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:43,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-12-06 18:58:43,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:58:43,580 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:58:43,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:43,581 INFO L85 PathProgramCache]: Analyzing trace with hash 449486225, now seen corresponding path program 1 times [2021-12-06 18:58:43,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:58:43,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029438593] [2021-12-06 18:58:43,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:43,583 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:58:43,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:58:43,585 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:58:43,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-12-06 18:58:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:43,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 40 conjunts are in the unsatisfiable core [2021-12-06 18:58:43,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:43,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:58:43,754 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 18:58:43,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-12-06 18:58:43,859 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-12-06 18:58:43,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 51 [2021-12-06 18:58:43,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:58:43,986 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 18:58:43,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 42 [2021-12-06 18:58:44,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 42 treesize of output 40 [2021-12-06 18:58:44,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:58:44,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 38 [2021-12-06 18:58:44,504 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:58:44,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 55 [2021-12-06 18:58:44,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 44 [2021-12-06 18:58:44,687 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:44,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:58:45,313 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:58:45,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 47 [2021-12-06 18:58:45,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 160 treesize of output 156 [2021-12-06 18:58:45,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:58:45,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 69 treesize of output 67 [2021-12-06 18:58:45,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:58:45,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 133 treesize of output 129 [2021-12-06 18:58:45,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 102 treesize of output 98 [2021-12-06 18:58:50,864 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_850 (_ BitVec 1)) (|v_ULTIMATE.start_dll_circular_create_~new_head~0#1.base_28| (_ BitVec 32)) (v_ArrVal_858 (_ BitVec 1)) (v_arrayElimCell_91 (_ BitVec 32))) (let ((.cse3 (store |c_#valid| |v_ULTIMATE.start_dll_circular_create_~new_head~0#1.base_28| v_ArrVal_850)) (.cse4 (= |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| |v_ULTIMATE.start_dll_circular_create_~new_head~0#1.base_28|))) (let ((.cse0 (= |v_ULTIMATE.start_dll_circular_create_~new_head~0#1.base_28| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|)) (.cse1 (not .cse4)) (.cse2 (and (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store .cse3 v_arrayElimCell_91 v_ArrVal_858) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|)))))))))))))))) (_ bv1 1))) .cse4))) (or (and .cse0 (or (and (forall ((v_arrayElimCell_90 (_ BitVec 32))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store (store |c_#valid| |v_ULTIMATE.start_dll_circular_create_~new_head~0#1.base_28| v_ArrVal_850) v_arrayElimCell_90 v_ArrVal_858) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|)))))))))))))))))) .cse1) .cse2)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_dll_circular_create_~new_head~0#1.base_28|)))))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select .cse3 |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|)))) (_ bv1 1)))) (and (not .cse0) (or (and .cse1 (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store .cse3 |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_858) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|))))))))))))))))) .cse2)))))) is different from false [2021-12-06 18:59:10,773 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_850 (_ BitVec 1)) (|v_ULTIMATE.start_dll_circular_create_~new_head~0#1.base_28| (_ BitVec 32)) (|v_ULTIMATE.start_dll_circular_create_~new_head~0#1.base_29| (_ BitVec 32)) (v_ArrVal_858 (_ BitVec 1)) (v_ArrVal_848 (_ BitVec 1))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_dll_circular_create_~new_head~0#1.base_29| v_ArrVal_848))) (or (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select .cse0 |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|))))) (_ bv1 1)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_dll_circular_create_~new_head~0#1.base_29|))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse0 |v_ULTIMATE.start_dll_circular_create_~new_head~0#1.base_28|)))))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store (store .cse0 |v_ULTIMATE.start_dll_circular_create_~new_head~0#1.base_28| v_ArrVal_850) |v_ULTIMATE.start_dll_circular_create_~new_head~0#1.base_29| v_ArrVal_858) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|)))))))))))))))))))) (_ bv1 1)))))) is different from false [2021-12-06 18:59:10,926 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-06 18:59:10,926 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:59:10,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029438593] [2021-12-06 18:59:10,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029438593] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:59:10,926 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:59:10,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 36 [2021-12-06 18:59:10,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122579472] [2021-12-06 18:59:10,926 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:59:10,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-06 18:59:10,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:59:10,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-06 18:59:10,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1056, Unknown=7, NotChecked=134, Total=1332 [2021-12-06 18:59:10,928 INFO L87 Difference]: Start difference. First operand 146 states and 160 transitions. Second operand has 37 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 37 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:28,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:59:28,530 INFO L93 Difference]: Finished difference Result 145 states and 159 transitions. [2021-12-06 18:59:28,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 18:59:28,531 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 37 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-06 18:59:28,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:59:28,531 INFO L225 Difference]: With dead ends: 145 [2021-12-06 18:59:28,531 INFO L226 Difference]: Without dead ends: 145 [2021-12-06 18:59:28,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 30 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 25.5s TimeCoverageRelationStatistics Valid=192, Invalid=1369, Unknown=7, NotChecked=154, Total=1722 [2021-12-06 18:59:28,532 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 21 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 551 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:59:28,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 854 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 551 Unchecked, 0.1s Time] [2021-12-06 18:59:28,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-12-06 18:59:28,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-12-06 18:59:28,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 132 states have (on average 1.2045454545454546) internal successors, (159), 144 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:28,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 159 transitions. [2021-12-06 18:59:28,536 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 159 transitions. Word has length 34 [2021-12-06 18:59:28,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:59:28,536 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 159 transitions. [2021-12-06 18:59:28,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 37 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:28,537 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 159 transitions. [2021-12-06 18:59:28,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 18:59:28,537 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:59:28,537 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:59:28,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-12-06 18:59:28,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:59:28,738 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:59:28,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:59:28,739 INFO L85 PathProgramCache]: Analyzing trace with hash 449055249, now seen corresponding path program 1 times [2021-12-06 18:59:28,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:59:28,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584082131] [2021-12-06 18:59:28,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:59:28,741 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:59:28,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:59:28,743 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:59:28,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-12-06 18:59:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:59:29,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-06 18:59:29,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:59:29,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:59:29,112 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-12-06 18:59:29,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 52 [2021-12-06 18:59:29,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:59:29,265 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 18:59:29,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2021-12-06 18:59:29,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 32 treesize of output 32 [2021-12-06 18:59:29,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:59:29,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 39 treesize of output 34 [2021-12-06 18:59:29,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 40 treesize of output 28 [2021-12-06 18:59:29,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 38 [2021-12-06 18:59:29,698 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:59:29,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:59:30,005 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_909 (_ BitVec 1)) (v_ArrVal_906 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_906) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|) v_ArrVal_909) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|))))))))))))) is different from false [2021-12-06 18:59:30,016 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_909 (_ BitVec 1)) (v_ArrVal_906 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_906) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) v_ArrVal_909) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|)))))))))) (_ bv1 1)))) is different from false [2021-12-06 18:59:30,025 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_909 (_ BitVec 1)) (v_ArrVal_905 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_906 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_905) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_906) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) v_ArrVal_909) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|))))))))))))) (_ bv1 1)))) is different from false [2021-12-06 18:59:30,036 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:59:30,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 42 [2021-12-06 18:59:30,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 140 treesize of output 132 [2021-12-06 18:59:30,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 64 treesize of output 62 [2021-12-06 18:59:30,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 126 treesize of output 122 [2021-12-06 18:59:31,190 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 18:59:31,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 74 [2021-12-06 18:59:31,210 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-12-06 18:59:31,210 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:59:31,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584082131] [2021-12-06 18:59:31,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1584082131] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:59:31,210 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:59:31,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 25 [2021-12-06 18:59:31,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442186385] [2021-12-06 18:59:31,210 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:59:31,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-06 18:59:31,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:59:31,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-06 18:59:31,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=437, Unknown=3, NotChecked=132, Total=650 [2021-12-06 18:59:31,211 INFO L87 Difference]: Start difference. First operand 145 states and 159 transitions. Second operand has 26 states, 25 states have (on average 2.28) internal successors, (57), 26 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:31,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:59:31,910 INFO L93 Difference]: Finished difference Result 144 states and 158 transitions. [2021-12-06 18:59:31,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 18:59:31,910 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.28) internal successors, (57), 26 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-06 18:59:31,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:59:31,911 INFO L225 Difference]: With dead ends: 144 [2021-12-06 18:59:31,911 INFO L226 Difference]: Without dead ends: 144 [2021-12-06 18:59:31,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 37 SyntacticMatches, 8 SemanticMatches, 31 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=136, Invalid=743, Unknown=3, NotChecked=174, Total=1056 [2021-12-06 18:59:31,912 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 48 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 432 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:59:31,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 695 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 320 Invalid, 0 Unknown, 432 Unchecked, 0.4s Time] [2021-12-06 18:59:31,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-12-06 18:59:31,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-12-06 18:59:31,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 132 states have (on average 1.196969696969697) internal successors, (158), 143 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:31,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 158 transitions. [2021-12-06 18:59:31,916 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 158 transitions. Word has length 34 [2021-12-06 18:59:31,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:59:31,916 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 158 transitions. [2021-12-06 18:59:31,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.28) internal successors, (57), 26 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:31,916 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 158 transitions. [2021-12-06 18:59:31,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 18:59:31,917 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:59:31,917 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:59:31,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-12-06 18:59:32,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:59:32,117 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:59:32,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:59:32,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1035188976, now seen corresponding path program 2 times [2021-12-06 18:59:32,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:59:32,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [181666521] [2021-12-06 18:59:32,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 18:59:32,119 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:59:32,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:59:32,119 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:59:32,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-12-06 18:59:32,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 18:59:32,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:59:32,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 18:59:32,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:59:32,277 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:59:32,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:59:32,357 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:59:32,357 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:59:32,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [181666521] [2021-12-06 18:59:32,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [181666521] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:59:32,358 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:59:32,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-06 18:59:32,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863010236] [2021-12-06 18:59:32,358 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:59:32,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:59:32,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:59:32,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:59:32,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:59:32,358 INFO L87 Difference]: Start difference. First operand 144 states and 158 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:32,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:59:32,377 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2021-12-06 18:59:32,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:59:32,378 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-06 18:59:32,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:59:32,378 INFO L225 Difference]: With dead ends: 81 [2021-12-06 18:59:32,378 INFO L226 Difference]: Without dead ends: 81 [2021-12-06 18:59:32,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:59:32,379 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 207 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:59:32,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 240 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:59:32,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-12-06 18:59:32,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-12-06 18:59:32,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 74 states have (on average 1.1486486486486487) internal successors, (85), 80 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:32,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2021-12-06 18:59:32,381 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 34 [2021-12-06 18:59:32,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:59:32,381 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2021-12-06 18:59:32,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:32,381 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2021-12-06 18:59:32,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 18:59:32,381 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:59:32,381 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:59:32,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-12-06 18:59:32,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:59:32,582 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 18:59:32,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:59:32,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1654547908, now seen corresponding path program 1 times [2021-12-06 18:59:32,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:59:32,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [349041488] [2021-12-06 18:59:32,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:59:32,583 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:59:32,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:59:32,583 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:59:32,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-12-06 18:59:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:59:32,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 41 conjunts are in the unsatisfiable core [2021-12-06 18:59:32,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:59:32,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:59:32,749 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 18:59:32,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-12-06 18:59:32,867 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-12-06 18:59:32,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 55 [2021-12-06 18:59:32,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:59:33,036 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 18:59:33,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 54 [2021-12-06 18:59:33,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 39 treesize of output 37 [2021-12-06 18:59:33,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:59:33,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 37 [2021-12-06 18:59:33,566 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:59:33,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 49 [2021-12-06 18:59:33,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 45 [2021-12-06 18:59:33,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 43 [2021-12-06 18:59:33,850 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:59:33,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:59:34,573 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1011 (_ BitVec 1)) (v_ArrVal_1010 (_ BitVec 1)) (v_ArrVal_1007 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store (store |c_#valid| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_1010) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_1011) (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_1007) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|)))))))))))))))))))))))))))))) (_ bv1 1)))) is different from false [2021-12-06 18:59:34,589 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1011 (_ BitVec 1)) (v_ArrVal_1010 (_ BitVec 1)) (v_ArrVal_1007 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store (store |c_#valid| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| v_ArrVal_1010) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_1011) (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_1007) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|)))))))))))))))))))))))))))))))))) is different from false [2021-12-06 18:59:34,685 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:59:34,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 69 [2021-12-06 18:59:34,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 248 treesize of output 244 [2021-12-06 18:59:34,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:59:34,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 228 treesize of output 224 [2021-12-06 18:59:34,697 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:59:34,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 114 treesize of output 110 [2021-12-06 18:59:34,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 157 treesize of output 155 [2021-12-06 19:00:35,775 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-12-06 19:00:35,775 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:00:35,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [349041488] [2021-12-06 19:00:35,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [349041488] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:00:35,775 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:00:35,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 37 [2021-12-06 19:00:35,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436231898] [2021-12-06 19:00:35,776 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:00:35,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-12-06 19:00:35,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:00:35,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-12-06 19:00:35,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1109, Unknown=18, NotChecked=138, Total=1406 [2021-12-06 19:00:35,777 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand has 38 states, 37 states have (on average 1.837837837837838) internal successors, (68), 38 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:00:42,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:00:42,247 INFO L93 Difference]: Finished difference Result 80 states and 84 transitions. [2021-12-06 19:00:42,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 19:00:42,248 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.837837837837838) internal successors, (68), 38 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-12-06 19:00:42,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:00:42,248 INFO L225 Difference]: With dead ends: 80 [2021-12-06 19:00:42,248 INFO L226 Difference]: Without dead ends: 80 [2021-12-06 19:00:42,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 58.9s TimeCoverageRelationStatistics Valid=204, Invalid=1426, Unknown=18, NotChecked=158, Total=1806 [2021-12-06 19:00:42,249 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 26 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 422 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:00:42,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 612 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 422 Unchecked, 0.1s Time] [2021-12-06 19:00:42,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-12-06 19:00:42,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-12-06 19:00:42,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 74 states have (on average 1.135135135135135) internal successors, (84), 79 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:00:42,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2021-12-06 19:00:42,251 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 36 [2021-12-06 19:00:42,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:00:42,251 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2021-12-06 19:00:42,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.837837837837838) internal successors, (68), 38 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:00:42,251 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2021-12-06 19:00:42,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 19:00:42,252 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:00:42,252 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:00:42,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-12-06 19:00:42,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:00:42,452 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 19:00:42,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:00:42,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1608865938, now seen corresponding path program 1 times [2021-12-06 19:00:42,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:00:42,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69294910] [2021-12-06 19:00:42,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:00:42,453 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:00:42,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:00:42,454 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:00:42,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-12-06 19:00:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:00:42,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 41 conjunts are in the unsatisfiable core [2021-12-06 19:00:42,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:00:42,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 19:00:42,610 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 19:00:42,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-12-06 19:00:42,737 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-12-06 19:00:42,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 53 [2021-12-06 19:00:42,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 19:00:42,896 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 19:00:42,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 46 [2021-12-06 19:00:43,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 45 treesize of output 43 [2021-12-06 19:00:43,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:00:43,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 41 [2021-12-06 19:00:43,485 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:00:43,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 47 [2021-12-06 19:00:43,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 50 [2021-12-06 19:00:43,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 47 [2021-12-06 19:00:43,865 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:00:43,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:00:44,755 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:00:44,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 56 [2021-12-06 19:00:44,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 394 treesize of output 388 [2021-12-06 19:00:44,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 454 treesize of output 448 [2021-12-06 19:00:44,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:00:44,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 212 treesize of output 208 [2021-12-06 19:00:44,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 562 treesize of output 554 [2021-12-06 19:01:18,003 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:01:18,003 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:01:18,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69294910] [2021-12-06 19:01:18,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69294910] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:01:18,003 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:01:18,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 38 [2021-12-06 19:01:18,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601939581] [2021-12-06 19:01:18,004 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:01:18,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-12-06 19:01:18,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:01:18,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-12-06 19:01:18,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1307, Unknown=10, NotChecked=0, Total=1482 [2021-12-06 19:01:18,005 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand has 39 states, 38 states have (on average 1.868421052631579) internal successors, (71), 39 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:01:31,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:01:31,338 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2021-12-06 19:01:31,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 19:01:31,338 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.868421052631579) internal successors, (71), 39 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-12-06 19:01:31,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:01:31,339 INFO L225 Difference]: With dead ends: 79 [2021-12-06 19:01:31,339 INFO L226 Difference]: Without dead ends: 79 [2021-12-06 19:01:31,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 40.2s TimeCoverageRelationStatistics Valid=215, Invalid=1581, Unknown=10, NotChecked=0, Total=1806 [2021-12-06 19:01:31,340 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 33 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 335 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:01:31,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 639 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 335 Unchecked, 0.0s Time] [2021-12-06 19:01:31,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-12-06 19:01:31,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-12-06 19:01:31,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 74 states have (on average 1.1216216216216217) internal successors, (83), 78 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:01:31,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2021-12-06 19:01:31,342 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 36 [2021-12-06 19:01:31,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:01:31,342 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2021-12-06 19:01:31,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 1.868421052631579) internal successors, (71), 39 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:01:31,342 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2021-12-06 19:01:31,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 19:01:31,343 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:01:31,343 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:01:31,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-12-06 19:01:31,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:01:31,543 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 55 more)] === [2021-12-06 19:01:31,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:01:31,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1615055412, now seen corresponding path program 1 times [2021-12-06 19:01:31,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:01:31,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [136006539] [2021-12-06 19:01:31,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:01:31,546 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:01:31,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:01:31,549 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:01:31,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-12-06 19:01:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:01:31,723 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:01:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:01:31,828 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-06 19:01:31,828 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 19:01:31,829 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_LEAK (58 of 59 remaining) [2021-12-06 19:01:31,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (57 of 59 remaining) [2021-12-06 19:01:31,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (56 of 59 remaining) [2021-12-06 19:01:31,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (55 of 59 remaining) [2021-12-06 19:01:31,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (54 of 59 remaining) [2021-12-06 19:01:31,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (53 of 59 remaining) [2021-12-06 19:01:31,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (52 of 59 remaining) [2021-12-06 19:01:31,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (51 of 59 remaining) [2021-12-06 19:01:31,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (50 of 59 remaining) [2021-12-06 19:01:31,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (49 of 59 remaining) [2021-12-06 19:01:31,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (48 of 59 remaining) [2021-12-06 19:01:31,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (47 of 59 remaining) [2021-12-06 19:01:31,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (46 of 59 remaining) [2021-12-06 19:01:31,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (45 of 59 remaining) [2021-12-06 19:01:31,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (44 of 59 remaining) [2021-12-06 19:01:31,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (43 of 59 remaining) [2021-12-06 19:01:31,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (42 of 59 remaining) [2021-12-06 19:01:31,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE (41 of 59 remaining) [2021-12-06 19:01:31,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE (40 of 59 remaining) [2021-12-06 19:01:31,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE (39 of 59 remaining) [2021-12-06 19:01:31,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE (38 of 59 remaining) [2021-12-06 19:01:31,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE (37 of 59 remaining) [2021-12-06 19:01:31,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE (36 of 59 remaining) [2021-12-06 19:01:31,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE (35 of 59 remaining) [2021-12-06 19:01:31,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE (34 of 59 remaining) [2021-12-06 19:01:31,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE (33 of 59 remaining) [2021-12-06 19:01:31,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE (32 of 59 remaining) [2021-12-06 19:01:31,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE (31 of 59 remaining) [2021-12-06 19:01:31,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE (30 of 59 remaining) [2021-12-06 19:01:31,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE (29 of 59 remaining) [2021-12-06 19:01:31,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE (28 of 59 remaining) [2021-12-06 19:01:31,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE (27 of 59 remaining) [2021-12-06 19:01:31,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE (26 of 59 remaining) [2021-12-06 19:01:31,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE (25 of 59 remaining) [2021-12-06 19:01:31,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE (24 of 59 remaining) [2021-12-06 19:01:31,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE (23 of 59 remaining) [2021-12-06 19:01:31,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE (22 of 59 remaining) [2021-12-06 19:01:31,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE (21 of 59 remaining) [2021-12-06 19:01:31,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE (20 of 59 remaining) [2021-12-06 19:01:31,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE (19 of 59 remaining) [2021-12-06 19:01:31,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE (18 of 59 remaining) [2021-12-06 19:01:31,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE (17 of 59 remaining) [2021-12-06 19:01:31,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE (16 of 59 remaining) [2021-12-06 19:01:31,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE (15 of 59 remaining) [2021-12-06 19:01:31,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE (14 of 59 remaining) [2021-12-06 19:01:31,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE (13 of 59 remaining) [2021-12-06 19:01:31,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_FREE (12 of 59 remaining) [2021-12-06 19:01:31,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE (11 of 59 remaining) [2021-12-06 19:01:31,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_FREE (10 of 59 remaining) [2021-12-06 19:01:31,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_FREE (9 of 59 remaining) [2021-12-06 19:01:31,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE (8 of 59 remaining) [2021-12-06 19:01:31,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE (7 of 59 remaining) [2021-12-06 19:01:31,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE (6 of 59 remaining) [2021-12-06 19:01:31,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE (5 of 59 remaining) [2021-12-06 19:01:31,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE (4 of 59 remaining) [2021-12-06 19:01:31,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE (3 of 59 remaining) [2021-12-06 19:01:31,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE (2 of 59 remaining) [2021-12-06 19:01:31,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE (1 of 59 remaining) [2021-12-06 19:01:31,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE (0 of 59 remaining) [2021-12-06 19:01:31,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-12-06 19:01:32,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:01:32,041 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:01:32,043 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 19:01:32,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 07:01:32 BoogieIcfgContainer [2021-12-06 19:01:32,072 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 19:01:32,073 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 19:01:32,073 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 19:01:32,073 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 19:01:32,073 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:58:15" (3/4) ... [2021-12-06 19:01:32,075 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 19:01:32,075 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 19:01:32,076 INFO L158 Benchmark]: Toolchain (without parser) took 197627.03ms. Allocated memory was 60.8MB in the beginning and 117.4MB in the end (delta: 56.6MB). Free memory was 38.1MB in the beginning and 37.6MB in the end (delta: 596.2kB). Peak memory consumption was 55.5MB. Max. memory is 16.1GB. [2021-12-06 19:01:32,076 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 60.8MB. Free memory is still 41.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 19:01:32,076 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.83ms. Allocated memory is still 60.8MB. Free memory was 38.0MB in the beginning and 38.0MB in the end (delta: 11.4kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 19:01:32,076 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.08ms. Allocated memory is still 60.8MB. Free memory was 37.8MB in the beginning and 35.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 19:01:32,077 INFO L158 Benchmark]: Boogie Preprocessor took 24.70ms. Allocated memory is still 60.8MB. Free memory was 35.7MB in the beginning and 33.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 19:01:32,077 INFO L158 Benchmark]: RCFGBuilder took 454.75ms. Allocated memory was 60.8MB in the beginning and 96.5MB in the end (delta: 35.7MB). Free memory was 33.8MB in the beginning and 66.1MB in the end (delta: -32.3MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2021-12-06 19:01:32,077 INFO L158 Benchmark]: TraceAbstraction took 196806.35ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 65.3MB in the beginning and 37.6MB in the end (delta: 27.8MB). Peak memory consumption was 47.8MB. Max. memory is 16.1GB. [2021-12-06 19:01:32,077 INFO L158 Benchmark]: Witness Printer took 2.63ms. Allocated memory is still 117.4MB. Free memory is still 37.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 19:01:32,078 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 60.8MB. Free memory is still 41.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 297.83ms. Allocated memory is still 60.8MB. Free memory was 38.0MB in the beginning and 38.0MB in the end (delta: 11.4kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.08ms. Allocated memory is still 60.8MB. Free memory was 37.8MB in the beginning and 35.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.70ms. Allocated memory is still 60.8MB. Free memory was 35.7MB in the beginning and 33.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 454.75ms. Allocated memory was 60.8MB in the beginning and 96.5MB in the end (delta: 35.7MB). Free memory was 33.8MB in the beginning and 66.1MB in the end (delta: -32.3MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. * TraceAbstraction took 196806.35ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 65.3MB in the beginning and 37.6MB in the end (delta: 27.8MB). Peak memory consumption was 47.8MB. Max. memory is 16.1GB. * Witness Printer took 2.63ms. Allocated memory is still 117.4MB. Free memory is still 37.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 616]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 616. Possible FailurePath: [L617] const int len = 3; [L618] CALL, EXPR dll_circular_create(len) [L564] DLL last = (DLL) malloc(sizeof(struct node)); [L565] COND FALSE !(((void *)0) == last) VAL [\old(len)=3, last={1:0}, len=3] [L568] last->next = last VAL [\old(len)=3, last={1:0}, len=3] [L569] last->prev = last VAL [\old(len)=3, last={1:0}, len=3] [L570] DLL head = last; VAL [\old(len)=3, head={1:0}, last={1:0}, len=3] [L571] COND TRUE len > 1 [L572] DLL new_head = (DLL) malloc(sizeof(struct node)); [L573] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=3, head={1:0}, last={1:0}, len=3, new_head={3:0}] [L576] new_head->next = head VAL [\old(len)=3, head={1:0}, last={1:0}, len=3, new_head={3:0}] [L577] head->prev = new_head VAL [\old(len)=3, head={1:0}, last={1:0}, len=3, new_head={3:0}] [L578] head = new_head [L579] len-- VAL [\old(len)=3, head={3:0}, last={1:0}, len=2, new_head={3:0}] [L571] COND TRUE len > 1 [L572] DLL new_head = (DLL) malloc(sizeof(struct node)); [L573] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=3, head={3:0}, last={1:0}, len=2, new_head={11:0}] [L576] new_head->next = head VAL [\old(len)=3, head={3:0}, last={1:0}, len=2, new_head={11:0}] [L577] head->prev = new_head VAL [\old(len)=3, head={3:0}, last={1:0}, len=2, new_head={11:0}] [L578] head = new_head [L579] len-- VAL [\old(len)=3, head={11:0}, last={1:0}, len=1, new_head={11:0}] [L571] COND FALSE !(len > 1) VAL [\old(len)=3, head={11:0}, last={1:0}, len=1, new_head={11:0}] [L581] last->next = head VAL [\old(len)=3, head={11:0}, last={1:0}, len=1, new_head={11:0}] [L582] head->prev = last VAL [\old(len)=3, head={11:0}, last={1:0}, len=1, new_head={11:0}] [L583] return head; VAL [\old(len)=3, \result={11:0}, head={11:0}, last={1:0}, len=1, new_head={11:0}] [L618] RET, EXPR dll_circular_create(len) [L618] DLL head = dll_circular_create(len); [L619] CALL _destroy_in_nondeterministic_order(head) [L586] EXPR head->prev VAL [head={11:0}, head={11:0}, head->prev={1:0}] [L586] DLL pred = head->prev; [L587] EXPR head->next VAL [head={11:0}, head={11:0}, head->next={3:0}, pred={1:0}] [L587] DLL succ = head->next; [L588] COND FALSE !(__VERIFIER_nondet_int()) [L597] COND FALSE !(__VERIFIER_nondet_int()) [L607] free(pred) VAL [head={11:0}, head={11:0}, pred={1:0}, succ={3:0}] [L607] free(pred) VAL [head={11:0}, head={11:0}, pred={1:0}, succ={3:0}] [L607] free(pred) [L608] COND FALSE !(__VERIFIER_nondet_int()) [L612] free(head) VAL [head={11:0}, head={11:0}, pred={1:0}, succ={3:0}] [L612] free(head) VAL [head={11:0}, head={11:0}, pred={1:0}, succ={3:0}] [L612] free(head) [L619] RET _destroy_in_nondeterministic_order(head) [L620] head = ((void *)0) [L621] return 0; VAL [\result=0, head={0:0}, len=3] - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 569]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 569]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 577]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 577]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 582]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 582]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 591]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 591]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 591]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 592]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 592]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 592]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 595]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 595]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 595]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 598]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 598]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 598]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 600]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 600]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 600]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 603]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 603]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 603]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 604]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 604]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 604]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 610]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 610]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 610]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 612]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 612]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 612]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 134 locations, 59 error locations. Started 1 CEGAR loops. OverallTime: 196.7s, OverallIterations: 31, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 46.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4446 SdHoareTripleChecker+Valid, 5.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4446 mSDsluCounter, 10973 SdHoareTripleChecker+Invalid, 4.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 4399 IncrementalHoareTripleChecker+Unchecked, 8546 mSDsCounter, 196 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4169 IncrementalHoareTripleChecker+Invalid, 8764 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 196 mSolverCounterUnsat, 2427 mSDtfsCounter, 4169 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1204 GetRequests, 709 SyntacticMatches, 53 SemanticMatches, 442 ConstructedPredicates, 15 IntricatePredicates, 7 DeprecatedPredicates, 2898 ImplicationChecksByTransitivity, 136.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=151occurred in iteration=21, InterpolantAutomatonStates: 293, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 30 MinimizatonAttempts, 79 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 139.9s InterpolantComputationTime, 754 NumberOfCodeBlocks, 754 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 1079 ConstructedInterpolants, 420 QuantifiedInterpolants, 23613 SizeOfPredicates, 297 NumberOfNonLiveVariables, 3823 ConjunctsInSsa, 516 ConjunctsInUnsatCore, 44 InterpolantComputations, 16 PerfectInterpolantSequences, 97/257 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-06 19:01:32,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcd0963-c33f-4126-9c44-65ac3527478a/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample