/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/chl/chromosome-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 20:59:12,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 20:59:12,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 20:59:12,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-06 20:59:12,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-06 20:59:12,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-06 20:59:12,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-06 20:59:12,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-06 20:59:12,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-06 20:59:12,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-06 20:59:12,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-06 20:59:12,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-06 20:59:12,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-06 20:59:12,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-06 20:59:12,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-06 20:59:12,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-06 20:59:12,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-06 20:59:12,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-06 20:59:12,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-06 20:59:12,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-06 20:59:12,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-06 20:59:12,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-06 20:59:12,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-06 20:59:12,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-06 20:59:12,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-06 20:59:12,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-06 20:59:12,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-06 20:59:12,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-06 20:59:12,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-06 20:59:12,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-06 20:59:12,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-06 20:59:12,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-06 20:59:12,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-06 20:59:12,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 20:59:12,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 20:59:12,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 20:59:12,453 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-06 20:59:12,485 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 20:59:12,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 20:59:12,486 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 20:59:12,486 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 20:59:12,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 20:59:12,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 20:59:12,488 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 20:59:12,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 20:59:12,488 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 20:59:12,489 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 20:59:12,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 20:59:12,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 20:59:12,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 20:59:12,489 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 20:59:12,490 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 20:59:12,490 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 20:59:12,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 20:59:12,490 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 20:59:12,491 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 20:59:12,491 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 20:59:12,491 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 20:59:12,491 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 20:59:12,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 20:59:12,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 20:59:12,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 20:59:12,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 20:59:12,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 20:59:12,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 20:59:12,493 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 20:59:12,493 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 20:59:12,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 20:59:12,493 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 20:59:12,494 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:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 20:59:12,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 20:59:12,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 20:59:12,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 20:59:12,995 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 20:59:12,996 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 20:59:12,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl/chromosome-symm.wvr.c [2021-10-06 20:59:13,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ae52d5d9/b122a7f7674d4d12a2329f1c2e0518c6/FLAGe0b3088b7 [2021-10-06 20:59:13,776 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 20:59:13,777 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/chromosome-symm.wvr.c [2021-10-06 20:59:13,788 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ae52d5d9/b122a7f7674d4d12a2329f1c2e0518c6/FLAGe0b3088b7 [2021-10-06 20:59:14,106 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ae52d5d9/b122a7f7674d4d12a2329f1c2e0518c6 [2021-10-06 20:59:14,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 20:59:14,117 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 20:59:14,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 20:59:14,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 20:59:14,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 20:59:14,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 08:59:14" (1/1) ... [2021-10-06 20:59:14,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56207206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:14, skipping insertion in model container [2021-10-06 20:59:14,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 08:59:14" (1/1) ... [2021-10-06 20:59:14,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 20:59:14,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 20:59:14,340 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/chromosome-symm.wvr.c[2303,2316] [2021-10-06 20:59:14,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 20:59:14,384 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-06 20:59:14,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 20:59:14,437 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/chromosome-symm.wvr.c[2303,2316] [2021-10-06 20:59:14,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 20:59:14,461 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 20:59:14,525 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/chromosome-symm.wvr.c[2303,2316] [2021-10-06 20:59:14,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 20:59:14,569 INFO L208 MainTranslator]: Completed translation [2021-10-06 20:59:14,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:14 WrapperNode [2021-10-06 20:59:14,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 20:59:14,571 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 20:59:14,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 20:59:14,572 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 20:59:14,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:14" (1/1) ... [2021-10-06 20:59:14,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:14" (1/1) ... [2021-10-06 20:59:14,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 20:59:14,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 20:59:14,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 20:59:14,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 20:59:14,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:14" (1/1) ... [2021-10-06 20:59:14,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:14" (1/1) ... [2021-10-06 20:59:14,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:14" (1/1) ... [2021-10-06 20:59:14,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:14" (1/1) ... [2021-10-06 20:59:14,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:14" (1/1) ... [2021-10-06 20:59:14,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:14" (1/1) ... [2021-10-06 20:59:14,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:14" (1/1) ... [2021-10-06 20:59:14,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 20:59:14,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 20:59:14,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 20:59:14,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 20:59:14,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:14" (1/1) ... [2021-10-06 20:59:14,780 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 20:59:14,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 20:59:14,812 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-06 20:59:14,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-06 20:59:14,883 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 20:59:14,883 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 20:59:14,883 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 20:59:14,883 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 20:59:14,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 20:59:14,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 20:59:14,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-06 20:59:14,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 20:59:14,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 20:59:14,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 20:59:14,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 20:59:14,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 20:59:14,889 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 20:59:15,694 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 20:59:15,694 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-10-06 20:59:15,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 08:59:15 BoogieIcfgContainer [2021-10-06 20:59:15,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 20:59:15,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 20:59:15,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 20:59:15,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 20:59:15,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 08:59:14" (1/3) ... [2021-10-06 20:59:15,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db1f690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 08:59:15, skipping insertion in model container [2021-10-06 20:59:15,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:14" (2/3) ... [2021-10-06 20:59:15,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db1f690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 08:59:15, skipping insertion in model container [2021-10-06 20:59:15,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 08:59:15" (3/3) ... [2021-10-06 20:59:15,706 INFO L111 eAbstractionObserver]: Analyzing ICFG chromosome-symm.wvr.c [2021-10-06 20:59:15,720 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 20:59:15,721 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-10-06 20:59:15,721 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 20:59:15,794 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,795 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,795 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,795 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,796 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,796 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,796 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,796 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,797 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,797 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,797 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,797 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,798 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,798 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,798 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,798 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,799 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,799 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,799 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,799 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,800 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,800 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,800 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,801 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,801 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,801 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,801 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,802 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,802 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,802 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,803 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,803 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,803 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,803 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,804 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,804 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,805 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,805 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,805 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,805 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,806 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,806 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,806 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,806 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,806 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,807 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,807 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,807 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,808 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,808 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,808 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,808 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,808 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,809 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,809 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,809 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,809 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,809 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,810 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,810 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,810 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,810 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,811 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,811 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,811 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,811 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,812 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,812 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,812 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,812 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,813 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,813 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,813 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,814 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,814 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,814 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,815 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,815 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,815 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,815 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,815 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,816 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,816 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,816 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,816 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,817 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,817 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,817 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,817 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,817 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,818 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,818 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,818 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,818 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,818 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,819 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,822 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,823 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,823 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,823 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,823 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,824 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,824 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,824 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,829 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,829 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,830 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,830 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,830 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,830 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,830 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,831 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:15,836 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-06 20:59:15,890 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 20:59:15,898 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, mConcurrency=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 [2021-10-06 20:59:15,899 INFO L340 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2021-10-06 20:59:15,919 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 20:59:15,932 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 183 transitions, 382 flow [2021-10-06 20:59:15,935 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 183 transitions, 382 flow [2021-10-06 20:59:15,937 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 173 places, 183 transitions, 382 flow [2021-10-06 20:59:16,033 INFO L129 PetriNetUnfolder]: 17/181 cut-off events. [2021-10-06 20:59:16,033 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-06 20:59:16,044 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 181 events. 17/181 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 243 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 117. Up to 3 conditions per place. [2021-10-06 20:59:16,050 INFO L116 LiptonReduction]: Number of co-enabled transitions 2400 [2021-10-06 20:59:37,624 INFO L131 LiptonReduction]: Checked pairs total: 2746 [2021-10-06 20:59:37,624 INFO L133 LiptonReduction]: Total number of compositions: 200 [2021-10-06 20:59:37,635 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 45 transitions, 106 flow [2021-10-06 20:59:37,664 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 297 states, 195 states have (on average 4.015384615384615) internal successors, (783), 296 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:37,674 INFO L276 IsEmpty]: Start isEmpty. Operand has 297 states, 195 states have (on average 4.015384615384615) internal successors, (783), 296 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:37,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-06 20:59:37,684 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:37,685 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-06 20:59:37,685 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 20:59:37,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:37,694 INFO L82 PathProgramCache]: Analyzing trace with hash 22797, now seen corresponding path program 1 times [2021-10-06 20:59:37,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:37,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048326206] [2021-10-06 20:59:37,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:59:37,709 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:37,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:37,716 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:59:37,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-06 20:59:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:59:37,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 20:59:37,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:38,230 INFO L354 Elim1Store]: treesize reduction 133, result has 28.1 percent of original size [2021-10-06 20:59:38,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 57 [2021-10-06 20:59:38,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:38,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:38,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:38,449 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:38,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048326206] [2021-10-06 20:59:38,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2048326206] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:59:38,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:59:38,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 20:59:38,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938532033] [2021-10-06 20:59:38,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 20:59:38,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:38,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 20:59:38,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:59:38,488 INFO L87 Difference]: Start difference. First operand has 297 states, 195 states have (on average 4.015384615384615) internal successors, (783), 296 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:39,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:39,641 INFO L93 Difference]: Finished difference Result 882 states and 2340 transitions. [2021-10-06 20:59:39,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 20:59:39,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-06 20:59:39,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:39,671 INFO L225 Difference]: With dead ends: 882 [2021-10-06 20:59:39,671 INFO L226 Difference]: Without dead ends: 882 [2021-10-06 20:59:39,673 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 73.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:59:39,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2021-10-06 20:59:39,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 300. [2021-10-06 20:59:39,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 199 states have (on average 4.010050251256281) internal successors, (798), 299 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:39,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 798 transitions. [2021-10-06 20:59:39,768 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 798 transitions. Word has length 2 [2021-10-06 20:59:39,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:39,768 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 798 transitions. [2021-10-06 20:59:39,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:39,769 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 798 transitions. [2021-10-06 20:59:39,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-06 20:59:39,769 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:39,770 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-06 20:59:39,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:39,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:59:39,971 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 20:59:39,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:39,973 INFO L82 PathProgramCache]: Analyzing trace with hash 22799, now seen corresponding path program 1 times [2021-10-06 20:59:39,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:39,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941136206] [2021-10-06 20:59:39,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:59:39,975 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:39,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:39,976 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:59:40,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-06 20:59:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:59:40,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 20:59:40,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:40,166 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-06 20:59:40,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 59 [2021-10-06 20:59:40,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:40,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:40,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:40,620 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:40,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941136206] [2021-10-06 20:59:40,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941136206] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:59:40,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:59:40,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 20:59:40,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584436968] [2021-10-06 20:59:40,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 20:59:40,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:40,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 20:59:40,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:59:40,624 INFO L87 Difference]: Start difference. First operand 300 states and 798 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:40,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:40,856 INFO L93 Difference]: Finished difference Result 298 states and 792 transitions. [2021-10-06 20:59:40,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:59:40,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-06 20:59:40,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:40,860 INFO L225 Difference]: With dead ends: 298 [2021-10-06 20:59:40,860 INFO L226 Difference]: Without dead ends: 298 [2021-10-06 20:59:40,861 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:59:40,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-10-06 20:59:40,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-10-06 20:59:40,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 199 states have (on average 3.979899497487437) internal successors, (792), 297 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:40,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 792 transitions. [2021-10-06 20:59:40,884 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 792 transitions. Word has length 2 [2021-10-06 20:59:40,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:40,885 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 792 transitions. [2021-10-06 20:59:40,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:40,885 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 792 transitions. [2021-10-06 20:59:40,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 20:59:40,886 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:40,886 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 20:59:40,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-06 20:59:41,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:59:41,099 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 20:59:41,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:41,101 INFO L82 PathProgramCache]: Analyzing trace with hash 712083, now seen corresponding path program 1 times [2021-10-06 20:59:41,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:41,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671532857] [2021-10-06 20:59:41,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:59:41,103 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:41,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:41,104 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:59:41,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-06 20:59:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:59:41,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 20:59:41,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:41,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:41,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:41,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:41,204 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:41,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671532857] [2021-10-06 20:59:41,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671532857] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:59:41,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:59:41,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-06 20:59:41,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044762173] [2021-10-06 20:59:41,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 20:59:41,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:41,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 20:59:41,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:59:41,207 INFO L87 Difference]: Start difference. First operand 298 states and 792 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:41,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:41,309 INFO L93 Difference]: Finished difference Result 298 states and 784 transitions. [2021-10-06 20:59:41,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 20:59:41,310 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-06 20:59:41,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:41,314 INFO L225 Difference]: With dead ends: 298 [2021-10-06 20:59:41,314 INFO L226 Difference]: Without dead ends: 298 [2021-10-06 20:59:41,314 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:59:41,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-10-06 20:59:41,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-10-06 20:59:41,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 199 states have (on average 3.9396984924623117) internal successors, (784), 297 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:41,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 784 transitions. [2021-10-06 20:59:41,332 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 784 transitions. Word has length 3 [2021-10-06 20:59:41,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:41,332 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 784 transitions. [2021-10-06 20:59:41,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:41,333 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 784 transitions. [2021-10-06 20:59:41,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-06 20:59:41,333 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:41,333 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-06 20:59:41,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:41,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:59:41,550 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 20:59:41,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:41,551 INFO L82 PathProgramCache]: Analyzing trace with hash 22035277, now seen corresponding path program 1 times [2021-10-06 20:59:41,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:41,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052014821] [2021-10-06 20:59:41,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:59:41,553 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:41,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:41,554 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:59:41,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-06 20:59:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:59:41,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 20:59:41,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:41,790 INFO L354 Elim1Store]: treesize reduction 133, result has 28.1 percent of original size [2021-10-06 20:59:41,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 57 [2021-10-06 20:59:41,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:41,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:42,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:42,371 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:42,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2052014821] [2021-10-06 20:59:42,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2052014821] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:42,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:42,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-06 20:59:42,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856198344] [2021-10-06 20:59:42,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 20:59:42,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:42,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 20:59:42,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-06 20:59:42,374 INFO L87 Difference]: Start difference. First operand 298 states and 784 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:45,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:45,118 INFO L93 Difference]: Finished difference Result 1171 states and 3115 transitions. [2021-10-06 20:59:45,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 20:59:45,119 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-06 20:59:45,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:45,130 INFO L225 Difference]: With dead ends: 1171 [2021-10-06 20:59:45,130 INFO L226 Difference]: Without dead ends: 1171 [2021-10-06 20:59:45,130 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 581.9ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-06 20:59:45,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2021-10-06 20:59:45,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 304. [2021-10-06 20:59:45,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 205 states have (on average 3.9121951219512194) internal successors, (802), 303 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:45,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 802 transitions. [2021-10-06 20:59:45,153 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 802 transitions. Word has length 4 [2021-10-06 20:59:45,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:45,154 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 802 transitions. [2021-10-06 20:59:45,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:45,154 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 802 transitions. [2021-10-06 20:59:45,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 20:59:45,155 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:45,155 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2021-10-06 20:59:45,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:45,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:59:45,370 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 20:59:45,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:45,371 INFO L82 PathProgramCache]: Analyzing trace with hash -671897389, now seen corresponding path program 1 times [2021-10-06 20:59:45,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:45,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242807092] [2021-10-06 20:59:45,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:59:45,373 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:45,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:45,376 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:59:45,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-06 20:59:45,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:59:45,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 20:59:45,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:45,516 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 20:59:45,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:45,592 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 20:59:45,593 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:45,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242807092] [2021-10-06 20:59:45,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242807092] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:45,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:45,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-06 20:59:45,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931263579] [2021-10-06 20:59:45,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 20:59:45,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:45,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 20:59:45,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-06 20:59:45,596 INFO L87 Difference]: Start difference. First operand 304 states and 802 transitions. Second operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 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) [2021-10-06 20:59:45,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:45,858 INFO L93 Difference]: Finished difference Result 304 states and 790 transitions. [2021-10-06 20:59:45,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 20:59:45,859 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 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 7 [2021-10-06 20:59:45,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:45,862 INFO L225 Difference]: With dead ends: 304 [2021-10-06 20:59:45,862 INFO L226 Difference]: Without dead ends: 304 [2021-10-06 20:59:45,863 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 107.0ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-06 20:59:45,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-10-06 20:59:45,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-10-06 20:59:45,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 205 states have (on average 3.8536585365853657) internal successors, (790), 303 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:45,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 790 transitions. [2021-10-06 20:59:45,875 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 790 transitions. Word has length 7 [2021-10-06 20:59:45,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:45,875 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 790 transitions. [2021-10-06 20:59:45,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 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) [2021-10-06 20:59:45,876 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 790 transitions. [2021-10-06 20:59:45,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 20:59:45,876 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:45,876 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1] [2021-10-06 20:59:45,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:46,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:59:46,090 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 20:59:46,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:46,091 INFO L82 PathProgramCache]: Analyzing trace with hash -673107041, now seen corresponding path program 2 times [2021-10-06 20:59:46,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:46,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697832417] [2021-10-06 20:59:46,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:59:46,093 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:46,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:46,094 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:59:46,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-06 20:59:46,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:59:46,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:46,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 20:59:46,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:46,288 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:46,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:46,469 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:46,469 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:46,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697832417] [2021-10-06 20:59:46,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697832417] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:46,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:46,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-06 20:59:46,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914000016] [2021-10-06 20:59:46,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 20:59:46,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:46,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 20:59:46,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:59:46,472 INFO L87 Difference]: Start difference. First operand 304 states and 790 transitions. Second operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 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) [2021-10-06 20:59:46,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:46,699 INFO L93 Difference]: Finished difference Result 302 states and 786 transitions. [2021-10-06 20:59:46,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-06 20:59:46,700 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 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 7 [2021-10-06 20:59:46,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:46,703 INFO L225 Difference]: With dead ends: 302 [2021-10-06 20:59:46,703 INFO L226 Difference]: Without dead ends: 302 [2021-10-06 20:59:46,704 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 196.7ms TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:59:46,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-10-06 20:59:46,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2021-10-06 20:59:46,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 205 states have (on average 3.8341463414634145) internal successors, (786), 301 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:46,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 786 transitions. [2021-10-06 20:59:46,715 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 786 transitions. Word has length 7 [2021-10-06 20:59:46,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:46,716 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 786 transitions. [2021-10-06 20:59:46,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 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) [2021-10-06 20:59:46,716 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 786 transitions. [2021-10-06 20:59:46,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 20:59:46,717 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:46,717 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1] [2021-10-06 20:59:46,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:46,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:59:46,930 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 20:59:46,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:46,931 INFO L82 PathProgramCache]: Analyzing trace with hash 832507473, now seen corresponding path program 2 times [2021-10-06 20:59:46,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:46,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281574983] [2021-10-06 20:59:46,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:59:46,932 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:46,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:46,934 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:59:46,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-06 20:59:47,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 20:59:47,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:47,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 20:59:47,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:47,206 INFO L354 Elim1Store]: treesize reduction 151, result has 21.8 percent of original size [2021-10-06 20:59:47,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 46 treesize of output 74 [2021-10-06 20:59:47,226 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 139 treesize of output 137 [2021-10-06 20:59:48,034 INFO L354 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2021-10-06 20:59:48,035 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 3 case distinctions, treesize of input 25 treesize of output 38 [2021-10-06 20:59:50,178 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 20:59:50,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:50,420 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 20:59:50,421 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:50,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281574983] [2021-10-06 20:59:50,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281574983] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:59:50,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:59:50,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-06 20:59:50,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761967909] [2021-10-06 20:59:50,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 20:59:50,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:50,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 20:59:50,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-06 20:59:50,424 INFO L87 Difference]: Start difference. First operand 302 states and 786 transitions. Second operand has 6 states, 5 states have (on average 2.0) 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) [2021-10-06 20:59:53,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:53,679 INFO L93 Difference]: Finished difference Result 245 states and 610 transitions. [2021-10-06 20:59:53,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 20:59:53,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) 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 13 [2021-10-06 20:59:53,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:53,689 INFO L225 Difference]: With dead ends: 245 [2021-10-06 20:59:53,689 INFO L226 Difference]: Without dead ends: 245 [2021-10-06 20:59:53,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 128.6ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-06 20:59:53,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-10-06 20:59:53,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2021-10-06 20:59:53,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 174 states have (on average 3.5057471264367814) internal successors, (610), 244 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:53,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 610 transitions. [2021-10-06 20:59:53,699 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 610 transitions. Word has length 13 [2021-10-06 20:59:53,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:53,709 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 610 transitions. [2021-10-06 20:59:53,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) 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) [2021-10-06 20:59:53,709 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 610 transitions. [2021-10-06 20:59:53,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 20:59:53,710 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:53,710 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1] [2021-10-06 20:59:53,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:53,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:59:53,915 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 20:59:53,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:53,916 INFO L82 PathProgramCache]: Analyzing trace with hash 832507475, now seen corresponding path program 1 times [2021-10-06 20:59:53,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:53,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590430859] [2021-10-06 20:59:53,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:59:53,918 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:53,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:53,920 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:59:53,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-06 20:59:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:59:54,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 20:59:54,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:54,351 INFO L354 Elim1Store]: treesize reduction 235, result has 17.8 percent of original size [2021-10-06 20:59:54,352 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 6 case distinctions, treesize of input 96 treesize of output 126 [2021-10-06 21:00:01,132 INFO L354 Elim1Store]: treesize reduction 138, result has 41.3 percent of original size [2021-10-06 21:00:01,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 87 treesize of output 170 [2021-10-06 21:00:57,864 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 5 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-06 21:00:57,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:57,954 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:00:57,955 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:57,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590430859] [2021-10-06 21:00:57,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1590430859] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:00:57,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:00:57,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-06 21:00:57,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744504338] [2021-10-06 21:00:57,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:00:57,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:57,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:00:57,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=12, Unknown=4, NotChecked=0, Total=30 [2021-10-06 21:00:57,957 INFO L87 Difference]: Start difference. First operand 245 states and 610 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:58,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:58,120 INFO L93 Difference]: Finished difference Result 188 states and 434 transitions. [2021-10-06 21:00:58,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:00:58,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-06 21:00:58,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:58,123 INFO L225 Difference]: With dead ends: 188 [2021-10-06 21:00:58,123 INFO L226 Difference]: Without dead ends: 188 [2021-10-06 21:00:58,123 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10056.2ms TimeCoverageRelationStatistics Valid=14, Invalid=12, Unknown=4, NotChecked=0, Total=30 [2021-10-06 21:00:58,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-06 21:00:58,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2021-10-06 21:00:58,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 143 states have (on average 3.034965034965035) internal successors, (434), 187 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:58,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 434 transitions. [2021-10-06 21:00:58,130 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 434 transitions. Word has length 13 [2021-10-06 21:00:58,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:58,130 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 434 transitions. [2021-10-06 21:00:58,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:58,131 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 434 transitions. [2021-10-06 21:00:58,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:00:58,131 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:58,132 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1] [2021-10-06 21:00:58,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:58,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:00:58,346 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:00:58,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:58,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1175781189, now seen corresponding path program 1 times [2021-10-06 21:00:58,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:58,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [610388799] [2021-10-06 21:00:58,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:00:58,349 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:58,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:58,350 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:00:58,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-06 21:00:58,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:00:58,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:00:58,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:58,821 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-06 21:00:58,821 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 5 case distinctions, treesize of input 250 treesize of output 271 [2021-10-06 21:01:05,095 INFO L354 Elim1Store]: treesize reduction 127, result has 46.0 percent of original size [2021-10-06 21:01:05,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 87 treesize of output 181 [2021-10-06 21:01:21,696 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:01:21,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:21,779 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:01:21,779 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:21,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [610388799] [2021-10-06 21:01:21,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [610388799] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:21,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:21,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:01:21,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940954167] [2021-10-06 21:01:21,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:01:21,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:21,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:01:21,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:01:21,782 INFO L87 Difference]: Start difference. First operand 188 states and 434 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:21,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:21,955 INFO L93 Difference]: Finished difference Result 173 states and 403 transitions. [2021-10-06 21:01:21,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:01:21,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 21:01:21,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:21,958 INFO L225 Difference]: With dead ends: 173 [2021-10-06 21:01:21,958 INFO L226 Difference]: Without dead ends: 173 [2021-10-06 21:01:21,959 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 86.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:01:21,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-10-06 21:01:21,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-10-06 21:01:21,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 138 states have (on average 2.920289855072464) internal successors, (403), 172 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:21,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 403 transitions. [2021-10-06 21:01:21,965 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 403 transitions. Word has length 15 [2021-10-06 21:01:21,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:21,965 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 403 transitions. [2021-10-06 21:01:21,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:21,966 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 403 transitions. [2021-10-06 21:01:21,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:01:21,967 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:21,967 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1] [2021-10-06 21:01:21,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:22,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:22,182 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:01:22,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:22,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1175781191, now seen corresponding path program 1 times [2021-10-06 21:01:22,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:22,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329801306] [2021-10-06 21:01:22,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:01:22,185 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:22,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:22,187 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:22,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-06 21:01:22,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:22,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:01:22,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:22,635 INFO L354 Elim1Store]: treesize reduction 155, result has 19.7 percent of original size [2021-10-06 21:01:22,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 44 treesize of output 68 [2021-10-06 21:01:22,643 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 240 treesize of output 232 [2021-10-06 21:01:25,159 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-10-06 21:01:25,159 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 6 case distinctions, treesize of input 32 treesize of output 52 [2021-10-06 21:01:31,870 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:01:31,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:32,149 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:01:32,149 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:32,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329801306] [2021-10-06 21:01:32,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [329801306] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:32,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:32,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-06 21:01:32,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163443796] [2021-10-06 21:01:32,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 21:01:32,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:32,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 21:01:32,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:01:32,152 INFO L87 Difference]: Start difference. First operand 173 states and 403 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:33,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:33,160 INFO L93 Difference]: Finished difference Result 158 states and 372 transitions. [2021-10-06 21:01:33,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:01:33,162 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 21:01:33,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:33,163 INFO L225 Difference]: With dead ends: 158 [2021-10-06 21:01:33,163 INFO L226 Difference]: Without dead ends: 158 [2021-10-06 21:01:33,164 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2203.6ms TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:01:33,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-06 21:01:33,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-10-06 21:01:33,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 133 states have (on average 2.7969924812030076) internal successors, (372), 157 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:33,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 372 transitions. [2021-10-06 21:01:33,170 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 372 transitions. Word has length 15 [2021-10-06 21:01:33,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:33,170 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 372 transitions. [2021-10-06 21:01:33,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:33,171 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 372 transitions. [2021-10-06 21:01:33,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:01:33,171 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:33,172 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:33,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:33,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:33,384 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:01:33,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:33,385 INFO L82 PathProgramCache]: Analyzing trace with hash 2089479799, now seen corresponding path program 1 times [2021-10-06 21:01:33,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:33,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648495608] [2021-10-06 21:01:33,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:01:33,387 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:33,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:33,388 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:33,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-06 21:01:33,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:33,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:01:33,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:33,684 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 [2021-10-06 21:01:33,716 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:01:33,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:33,758 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:01:33,758 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:33,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648495608] [2021-10-06 21:01:33,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648495608] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:33,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:33,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-06 21:01:33,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099232627] [2021-10-06 21:01:33,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:01:33,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:33,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:01:33,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:01:33,761 INFO L87 Difference]: Start difference. First operand 158 states and 372 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:33,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:33,924 INFO L93 Difference]: Finished difference Result 126 states and 292 transitions. [2021-10-06 21:01:33,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:01:33,925 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:01:33,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:33,926 INFO L225 Difference]: With dead ends: 126 [2021-10-06 21:01:33,926 INFO L226 Difference]: Without dead ends: 126 [2021-10-06 21:01:33,926 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:01:33,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-10-06 21:01:33,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-10-06 21:01:33,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 110 states have (on average 2.6545454545454548) internal successors, (292), 125 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:33,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 292 transitions. [2021-10-06 21:01:33,931 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 292 transitions. Word has length 16 [2021-10-06 21:01:33,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:33,932 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 292 transitions. [2021-10-06 21:01:33,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:33,932 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 292 transitions. [2021-10-06 21:01:33,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:01:33,933 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:33,933 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:33,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:34,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:34,147 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:01:34,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:34,148 INFO L82 PathProgramCache]: Analyzing trace with hash 2089479703, now seen corresponding path program 1 times [2021-10-06 21:01:34,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:34,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1266576764] [2021-10-06 21:01:34,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:01:34,150 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:34,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:34,151 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:34,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-06 21:01:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:34,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 21:01:34,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:34,600 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-06 21:01:34,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 59 [2021-10-06 21:01:34,965 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-06 21:01:34,966 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 [2021-10-06 21:01:35,136 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:01:35,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:39,238 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:01:39,239 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:39,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1266576764] [2021-10-06 21:01:39,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1266576764] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:39,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:39,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-06 21:01:39,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270968240] [2021-10-06 21:01:39,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 21:01:39,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:39,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 21:01:39,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=17, Unknown=2, NotChecked=0, Total=30 [2021-10-06 21:01:39,242 INFO L87 Difference]: Start difference. First operand 126 states and 292 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:39,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:39,391 INFO L93 Difference]: Finished difference Result 98 states and 222 transitions. [2021-10-06 21:01:39,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:01:39,392 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:01:39,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:39,393 INFO L225 Difference]: With dead ends: 98 [2021-10-06 21:01:39,393 INFO L226 Difference]: Without dead ends: 98 [2021-10-06 21:01:39,393 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4067.5ms TimeCoverageRelationStatistics Valid=17, Invalid=23, Unknown=2, NotChecked=0, Total=42 [2021-10-06 21:01:39,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-06 21:01:39,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-10-06 21:01:39,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 89 states have (on average 2.49438202247191) internal successors, (222), 97 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:39,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 222 transitions. [2021-10-06 21:01:39,398 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 222 transitions. Word has length 16 [2021-10-06 21:01:39,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:39,399 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 222 transitions. [2021-10-06 21:01:39,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:39,400 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 222 transitions. [2021-10-06 21:01:39,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:01:39,400 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:39,400 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:39,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:39,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:39,615 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:01:39,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:39,615 INFO L82 PathProgramCache]: Analyzing trace with hash 2089479704, now seen corresponding path program 1 times [2021-10-06 21:01:39,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:39,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858948264] [2021-10-06 21:01:39,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:01:39,616 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:39,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:39,617 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:39,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-06 21:01:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:39,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:01:39,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:40,088 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-06 21:01:40,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 77 [2021-10-06 21:01:40,227 INFO L354 Elim1Store]: treesize reduction 133, result has 28.1 percent of original size [2021-10-06 21:01:40,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 77 treesize of output 115 [2021-10-06 21:02:55,522 INFO L354 Elim1Store]: treesize reduction 156, result has 16.1 percent of original size [2021-10-06 21:02:55,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 391 treesize of output 343 [2021-10-06 21:02:55,670 INFO L354 Elim1Store]: treesize reduction 49, result has 59.5 percent of original size [2021-10-06 21:02:55,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 397 treesize of output 456 [2021-10-06 21:03:05,703 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:03:05,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:06,190 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:03:06,191 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:06,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858948264] [2021-10-06 21:03:06,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858948264] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:03:06,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:03:06,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-06 21:03:06,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927135584] [2021-10-06 21:03:06,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:03:06,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:06,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:03:06,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:03:06,193 INFO L87 Difference]: Start difference. First operand 98 states and 222 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:17,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:17,811 INFO L93 Difference]: Finished difference Result 286 states and 680 transitions. [2021-10-06 21:03:17,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:03:17,813 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:03:17,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:17,815 INFO L225 Difference]: With dead ends: 286 [2021-10-06 21:03:17,815 INFO L226 Difference]: Without dead ends: 286 [2021-10-06 21:03:17,816 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 766.4ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:03:17,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-10-06 21:03:17,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 142. [2021-10-06 21:03:17,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 133 states have (on average 2.924812030075188) internal successors, (389), 141 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:17,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 389 transitions. [2021-10-06 21:03:17,822 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 389 transitions. Word has length 16 [2021-10-06 21:03:17,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:17,824 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 389 transitions. [2021-10-06 21:03:17,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:17,824 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 389 transitions. [2021-10-06 21:03:17,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:03:17,825 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:17,825 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:17,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:18,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:18,036 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:03:18,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:18,037 INFO L82 PathProgramCache]: Analyzing trace with hash 2089479800, now seen corresponding path program 1 times [2021-10-06 21:03:18,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:18,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1687914640] [2021-10-06 21:03:18,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:03:18,039 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:18,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:18,041 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:18,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-06 21:03:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:03:18,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:03:18,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:18,421 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 [2021-10-06 21:03:18,513 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:03:18,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:18,770 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:03:18,771 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:18,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1687914640] [2021-10-06 21:03:18,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1687914640] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:03:18,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:03:18,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-06 21:03:18,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999807699] [2021-10-06 21:03:18,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:03:18,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:18,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:03:18,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:03:18,774 INFO L87 Difference]: Start difference. First operand 142 states and 389 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 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) [2021-10-06 21:03:19,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:19,230 INFO L93 Difference]: Finished difference Result 242 states and 608 transitions. [2021-10-06 21:03:19,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:03:19,232 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 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 16 [2021-10-06 21:03:19,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:19,234 INFO L225 Difference]: With dead ends: 242 [2021-10-06 21:03:19,234 INFO L226 Difference]: Without dead ends: 242 [2021-10-06 21:03:19,235 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 231.6ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:03:19,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-10-06 21:03:19,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 166. [2021-10-06 21:03:19,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 157 states have (on average 2.961783439490446) internal successors, (465), 165 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:19,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 465 transitions. [2021-10-06 21:03:19,242 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 465 transitions. Word has length 16 [2021-10-06 21:03:19,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:19,243 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 465 transitions. [2021-10-06 21:03:19,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 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) [2021-10-06 21:03:19,243 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 465 transitions. [2021-10-06 21:03:19,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:03:19,244 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:19,244 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:19,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:19,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:19,458 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:03:19,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:19,459 INFO L82 PathProgramCache]: Analyzing trace with hash -2055343851, now seen corresponding path program 1 times [2021-10-06 21:03:19,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:19,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873769005] [2021-10-06 21:03:19,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:03:19,461 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:19,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:19,462 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:19,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-06 21:03:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:03:19,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:03:19,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:20,290 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-06 21:03:20,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 77 [2021-10-06 21:03:20,443 INFO L354 Elim1Store]: treesize reduction 133, result has 28.1 percent of original size [2021-10-06 21:03:20,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 77 treesize of output 115 [2021-10-06 21:04:40,330 INFO L354 Elim1Store]: treesize reduction 156, result has 16.1 percent of original size [2021-10-06 21:04:40,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 391 treesize of output 343 [2021-10-06 21:04:40,488 INFO L354 Elim1Store]: treesize reduction 49, result has 59.5 percent of original size [2021-10-06 21:04:40,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 397 treesize of output 456 [2021-10-06 21:04:59,514 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:04:59,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:00,083 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:05:00,083 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:00,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873769005] [2021-10-06 21:05:00,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1873769005] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:05:00,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:05:00,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-06 21:05:00,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875013982] [2021-10-06 21:05:00,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:05:00,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:00,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:05:00,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:05:00,086 INFO L87 Difference]: Start difference. First operand 166 states and 465 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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) [2021-10-06 21:05:06,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:06,173 INFO L93 Difference]: Finished difference Result 258 states and 719 transitions. [2021-10-06 21:05:06,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:05:06,177 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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 18 [2021-10-06 21:05:06,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:06,180 INFO L225 Difference]: With dead ends: 258 [2021-10-06 21:05:06,180 INFO L226 Difference]: Without dead ends: 258 [2021-10-06 21:05:06,183 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 8941.1ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:05:06,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-10-06 21:05:06,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 190. [2021-10-06 21:05:06,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 181 states have (on average 3.287292817679558) internal successors, (595), 189 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:06,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 595 transitions. [2021-10-06 21:05:06,195 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 595 transitions. Word has length 18 [2021-10-06 21:05:06,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:06,196 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 595 transitions. [2021-10-06 21:05:06,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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) [2021-10-06 21:05:06,196 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 595 transitions. [2021-10-06 21:05:06,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:05:06,198 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:06,198 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:06,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:06,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:06,412 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:05:06,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:06,413 INFO L82 PathProgramCache]: Analyzing trace with hash -2055343908, now seen corresponding path program 1 times [2021-10-06 21:05:06,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:06,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771005959] [2021-10-06 21:05:06,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:05:06,414 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:06,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:06,415 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:06,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-06 21:05:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:05:06,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:05:06,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:06,918 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 [2021-10-06 21:05:07,047 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:05:07,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:07,337 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:05:07,338 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:07,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771005959] [2021-10-06 21:05:07,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771005959] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:05:07,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:05:07,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-06 21:05:07,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472460380] [2021-10-06 21:05:07,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:05:07,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:07,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:05:07,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:05:07,339 INFO L87 Difference]: Start difference. First operand 190 states and 595 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:07,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:07,796 INFO L93 Difference]: Finished difference Result 218 states and 601 transitions. [2021-10-06 21:05:07,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:05:07,798 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:05:07,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:07,799 INFO L225 Difference]: With dead ends: 218 [2021-10-06 21:05:07,800 INFO L226 Difference]: Without dead ends: 218 [2021-10-06 21:05:07,800 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 243.6ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:05:07,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-10-06 21:05:07,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 182. [2021-10-06 21:05:07,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 173 states have (on average 3.1040462427745665) internal successors, (537), 181 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:07,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 537 transitions. [2021-10-06 21:05:07,807 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 537 transitions. Word has length 18 [2021-10-06 21:05:07,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:07,808 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 537 transitions. [2021-10-06 21:05:07,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:07,808 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 537 transitions. [2021-10-06 21:05:07,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:05:07,809 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:07,809 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:07,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:08,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:08,023 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:05:08,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:08,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1140797690, now seen corresponding path program 1 times [2021-10-06 21:05:08,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:08,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1511134041] [2021-10-06 21:05:08,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:05:08,026 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:08,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:08,027 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:08,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-06 21:05:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:05:08,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:05:08,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:08,755 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-06 21:05:08,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 77 [2021-10-06 21:05:08,913 INFO L354 Elim1Store]: treesize reduction 133, result has 28.1 percent of original size [2021-10-06 21:05:08,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 77 treesize of output 115 [2021-10-06 21:06:28,039 INFO L354 Elim1Store]: treesize reduction 156, result has 16.1 percent of original size [2021-10-06 21:06:28,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 384 treesize of output 336 [2021-10-06 21:06:28,190 INFO L354 Elim1Store]: treesize reduction 49, result has 59.5 percent of original size [2021-10-06 21:06:28,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 390 treesize of output 449 [2021-10-06 21:06:53,584 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:06:53,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:55,049 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:06:55,050 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:55,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1511134041] [2021-10-06 21:06:55,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1511134041] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:06:55,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:06:55,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:06:55,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105952424] [2021-10-06 21:06:55,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:06:55,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:55,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:06:55,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:06:55,052 INFO L87 Difference]: Start difference. First operand 182 states and 537 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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) [2021-10-06 21:07:23,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:23,064 INFO L93 Difference]: Finished difference Result 470 states and 1278 transitions. [2021-10-06 21:07:23,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 21:07:23,066 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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 20 [2021-10-06 21:07:23,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:23,070 INFO L225 Difference]: With dead ends: 470 [2021-10-06 21:07:23,070 INFO L226 Difference]: Without dead ends: 470 [2021-10-06 21:07:23,071 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 19670.2ms TimeCoverageRelationStatistics Valid=95, Invalid=210, Unknown=1, NotChecked=0, Total=306 [2021-10-06 21:07:23,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-10-06 21:07:23,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 270. [2021-10-06 21:07:23,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 261 states have (on average 3.4521072796934864) internal successors, (901), 269 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:23,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 901 transitions. [2021-10-06 21:07:23,081 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 901 transitions. Word has length 20 [2021-10-06 21:07:23,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:23,082 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 901 transitions. [2021-10-06 21:07:23,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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) [2021-10-06 21:07:23,082 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 901 transitions. [2021-10-06 21:07:23,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:07:23,083 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:23,083 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:23,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-06 21:07:23,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:07:23,298 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:07:23,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:23,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1140797786, now seen corresponding path program 1 times [2021-10-06 21:07:23,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:23,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1768883385] [2021-10-06 21:07:23,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:07:23,300 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:23,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:23,301 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:07:23,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-06 21:07:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:07:23,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:07:23,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:23,900 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 [2021-10-06 21:07:24,078 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:07:24,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:24,719 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:07:24,720 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:24,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1768883385] [2021-10-06 21:07:24,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1768883385] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:07:24,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:07:24,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-06 21:07:24,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136381282] [2021-10-06 21:07:24,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:07:24,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:24,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:07:24,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:07:24,722 INFO L87 Difference]: Start difference. First operand 270 states and 901 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 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) [2021-10-06 21:07:25,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:25,894 INFO L93 Difference]: Finished difference Result 446 states and 1217 transitions. [2021-10-06 21:07:25,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 21:07:25,896 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 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 20 [2021-10-06 21:07:25,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:25,899 INFO L225 Difference]: With dead ends: 446 [2021-10-06 21:07:25,899 INFO L226 Difference]: Without dead ends: 446 [2021-10-06 21:07:25,900 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 745.7ms TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:07:25,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-10-06 21:07:25,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 270. [2021-10-06 21:07:25,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 261 states have (on average 3.268199233716475) internal successors, (853), 269 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:25,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 853 transitions. [2021-10-06 21:07:25,910 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 853 transitions. Word has length 20 [2021-10-06 21:07:25,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:25,911 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 853 transitions. [2021-10-06 21:07:25,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 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) [2021-10-06 21:07:25,911 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 853 transitions. [2021-10-06 21:07:25,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:07:25,912 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:25,912 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:25,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-06 21:07:26,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:07:26,126 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:07:26,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:26,127 INFO L82 PathProgramCache]: Analyzing trace with hash 499604469, now seen corresponding path program 1 times [2021-10-06 21:07:26,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:26,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670537758] [2021-10-06 21:07:26,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:07:26,129 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:26,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:26,130 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:07:26,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-06 21:07:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:07:26,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:07:26,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:26,987 INFO L354 Elim1Store]: treesize reduction 133, result has 28.1 percent of original size [2021-10-06 21:07:26,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 78 [2021-10-06 21:07:27,168 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-06 21:07:27,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 78 treesize of output 115 [2021-10-06 21:08:49,395 INFO L354 Elim1Store]: treesize reduction 156, result has 16.1 percent of original size [2021-10-06 21:08:49,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 386 treesize of output 338 [2021-10-06 21:08:49,550 INFO L354 Elim1Store]: treesize reduction 49, result has 59.5 percent of original size [2021-10-06 21:08:49,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 392 treesize of output 451 [2021-10-06 21:09:19,160 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:09:19,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:09:20,092 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:09:20,092 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:09:20,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670537758] [2021-10-06 21:09:20,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670537758] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:09:20,093 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:09:20,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:09:20,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610756279] [2021-10-06 21:09:20,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:09:20,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:09:20,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:09:20,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:09:20,095 INFO L87 Difference]: Start difference. First operand 270 states and 853 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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) [2021-10-06 21:09:32,188 WARN L207 SmtUtils]: Spent 5.11 s on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2021-10-06 21:09:35,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:09:35,989 INFO L93 Difference]: Finished difference Result 632 states and 1888 transitions. [2021-10-06 21:09:35,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 21:09:35,991 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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 20 [2021-10-06 21:09:35,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:09:35,995 INFO L225 Difference]: With dead ends: 632 [2021-10-06 21:09:35,995 INFO L226 Difference]: Without dead ends: 632 [2021-10-06 21:09:35,996 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 17959.9ms TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:09:35,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-10-06 21:09:36,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 366. [2021-10-06 21:09:36,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 357 states have (on average 3.7591036414565826) internal successors, (1342), 365 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:36,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 1342 transitions. [2021-10-06 21:09:36,011 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 1342 transitions. Word has length 20 [2021-10-06 21:09:36,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:09:36,011 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 1342 transitions. [2021-10-06 21:09:36,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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) [2021-10-06 21:09:36,012 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 1342 transitions. [2021-10-06 21:09:36,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:09:36,012 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:09:36,013 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:09:36,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-06 21:09:36,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:09:36,214 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:09:36,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:09:36,215 INFO L82 PathProgramCache]: Analyzing trace with hash 499604412, now seen corresponding path program 1 times [2021-10-06 21:09:36,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:09:36,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545978292] [2021-10-06 21:09:36,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:09:36,216 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:09:36,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:09:36,217 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:09:36,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-06 21:09:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:09:36,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:09:36,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:09:36,946 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 [2021-10-06 21:09:37,106 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:09:37,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:09:37,756 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:09:37,756 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:09:37,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545978292] [2021-10-06 21:09:37,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545978292] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:09:37,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:09:37,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-06 21:09:37,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131434045] [2021-10-06 21:09:37,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:09:37,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:09:37,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:09:37,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:09:37,759 INFO L87 Difference]: Start difference. First operand 366 states and 1342 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 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) [2021-10-06 21:09:38,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:09:38,847 INFO L93 Difference]: Finished difference Result 536 states and 1591 transitions. [2021-10-06 21:09:38,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 21:09:38,849 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 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 20 [2021-10-06 21:09:38,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:09:38,853 INFO L225 Difference]: With dead ends: 536 [2021-10-06 21:09:38,853 INFO L226 Difference]: Without dead ends: 536 [2021-10-06 21:09:38,853 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 765.0ms TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:09:38,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-10-06 21:09:38,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 366. [2021-10-06 21:09:38,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 357 states have (on average 3.4901960784313726) internal successors, (1246), 365 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:38,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 1246 transitions. [2021-10-06 21:09:38,874 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 1246 transitions. Word has length 20 [2021-10-06 21:09:38,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:09:38,876 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 1246 transitions. [2021-10-06 21:09:38,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 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) [2021-10-06 21:09:38,876 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 1246 transitions. [2021-10-06 21:09:38,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-06 21:09:38,880 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:09:38,880 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:09:38,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-06 21:09:39,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:09:39,093 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:09:39,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:09:39,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1657820844, now seen corresponding path program 2 times [2021-10-06 21:09:39,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:09:39,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345311392] [2021-10-06 21:09:39,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:09:39,095 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:09:39,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:09:39,098 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:09:39,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-06 21:09:39,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:09:39,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:09:39,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:09:39,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:09:40,317 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-06 21:09:40,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 77 [2021-10-06 21:09:40,529 INFO L354 Elim1Store]: treesize reduction 133, result has 28.1 percent of original size [2021-10-06 21:09:40,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 77 treesize of output 115 [2021-10-06 21:11:01,827 INFO L354 Elim1Store]: treesize reduction 146, result has 17.0 percent of original size [2021-10-06 21:11:01,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 390 treesize of output 342 [2021-10-06 21:11:01,953 INFO L354 Elim1Store]: treesize reduction 61, result has 49.6 percent of original size [2021-10-06 21:11:01,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 396 treesize of output 443 [2021-10-06 21:11:11,301 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-10-06 21:11:11,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:18,520 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-10-06 21:11:18,520 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:18,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345311392] [2021-10-06 21:11:18,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345311392] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:11:18,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:11:18,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-06 21:11:18,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255954433] [2021-10-06 21:11:18,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:11:18,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:18,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:11:18,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=38, Unknown=1, NotChecked=0, Total=56 [2021-10-06 21:11:18,522 INFO L87 Difference]: Start difference. First operand 366 states and 1246 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 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) [2021-10-06 21:11:19,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:19,060 INFO L93 Difference]: Finished difference Result 314 states and 1088 transitions. [2021-10-06 21:11:19,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 21:11:19,062 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 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 23 [2021-10-06 21:11:19,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:19,064 INFO L225 Difference]: With dead ends: 314 [2021-10-06 21:11:19,064 INFO L226 Difference]: Without dead ends: 314 [2021-10-06 21:11:19,064 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2572.4ms TimeCoverageRelationStatistics Valid=29, Invalid=60, Unknown=1, NotChecked=0, Total=90 [2021-10-06 21:11:19,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-10-06 21:11:19,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2021-10-06 21:11:19,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 310 states have (on average 3.509677419354839) internal successors, (1088), 313 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:19,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 1088 transitions. [2021-10-06 21:11:19,078 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 1088 transitions. Word has length 23 [2021-10-06 21:11:19,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:19,079 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 1088 transitions. [2021-10-06 21:11:19,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 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) [2021-10-06 21:11:19,080 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 1088 transitions. [2021-10-06 21:11:19,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-06 21:11:19,081 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:19,081 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:19,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:19,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:19,295 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:11:19,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:19,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1657820787, now seen corresponding path program 2 times [2021-10-06 21:11:19,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:19,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393079515] [2021-10-06 21:11:19,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:11:19,297 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:19,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:19,299 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:19,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-06 21:11:20,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:11:20,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:11:20,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:11:20,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:20,330 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:11:20,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:20,540 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:11:20,540 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:20,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393079515] [2021-10-06 21:11:20,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393079515] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:11:20,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:11:20,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-06 21:11:20,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241618959] [2021-10-06 21:11:20,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:11:20,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:20,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:11:20,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:11:20,543 INFO L87 Difference]: Start difference. First operand 314 states and 1088 transitions. Second operand has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 14 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) [2021-10-06 21:11:20,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:20,914 INFO L93 Difference]: Finished difference Result 444 states and 1294 transitions. [2021-10-06 21:11:20,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-06 21:11:20,916 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 14 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 23 [2021-10-06 21:11:20,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:20,919 INFO L225 Difference]: With dead ends: 444 [2021-10-06 21:11:20,919 INFO L226 Difference]: Without dead ends: 444 [2021-10-06 21:11:20,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 210.3ms TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:11:20,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-10-06 21:11:20,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 284. [2021-10-06 21:11:20,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 282 states have (on average 3.4184397163120566) internal successors, (964), 283 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:20,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 964 transitions. [2021-10-06 21:11:20,929 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 964 transitions. Word has length 23 [2021-10-06 21:11:20,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:20,930 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 964 transitions. [2021-10-06 21:11:20,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 14 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) [2021-10-06 21:11:20,930 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 964 transitions. [2021-10-06 21:11:20,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:11:20,931 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:20,931 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:20,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:21,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:21,132 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:11:21,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:21,133 INFO L82 PathProgramCache]: Analyzing trace with hash -603759664, now seen corresponding path program 1 times [2021-10-06 21:11:21,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:21,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1135049505] [2021-10-06 21:11:21,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:11:21,135 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:21,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:21,136 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:21,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-06 21:11:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:11:21,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 21:11:21,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:21,989 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:11:21,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:22,045 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:11:22,046 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:22,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1135049505] [2021-10-06 21:11:22,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1135049505] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:11:22,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:11:22,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-06 21:11:22,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437130254] [2021-10-06 21:11:22,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 21:11:22,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:22,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 21:11:22,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:11:22,048 INFO L87 Difference]: Start difference. First operand 284 states and 964 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:22,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:22,157 INFO L93 Difference]: Finished difference Result 428 states and 1260 transitions. [2021-10-06 21:11:22,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:11:22,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:11:22,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:22,160 INFO L225 Difference]: With dead ends: 428 [2021-10-06 21:11:22,161 INFO L226 Difference]: Without dead ends: 416 [2021-10-06 21:11:22,161 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 36.0ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:11:22,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-10-06 21:11:22,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 284. [2021-10-06 21:11:22,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 282 states have (on average 3.3900709219858154) internal successors, (956), 283 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:22,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 956 transitions. [2021-10-06 21:11:22,172 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 956 transitions. Word has length 25 [2021-10-06 21:11:22,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:22,172 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 956 transitions. [2021-10-06 21:11:22,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:22,172 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 956 transitions. [2021-10-06 21:11:22,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:11:22,173 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:22,174 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:22,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:22,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:22,389 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:11:22,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:22,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1472327564, now seen corresponding path program 2 times [2021-10-06 21:11:22,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:22,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668956428] [2021-10-06 21:11:22,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:11:22,392 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:22,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:22,393 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:22,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-06 21:11:23,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:11:23,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:11:23,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 21:11:23,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:23,152 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:11:23,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:23,232 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:11:23,232 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:23,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668956428] [2021-10-06 21:11:23,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668956428] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:11:23,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:11:23,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-06 21:11:23,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503654847] [2021-10-06 21:11:23,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 21:11:23,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:23,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 21:11:23,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:11:23,235 INFO L87 Difference]: Start difference. First operand 284 states and 956 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:23,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:23,311 INFO L93 Difference]: Finished difference Result 400 states and 1204 transitions. [2021-10-06 21:11:23,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 21:11:23,312 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:11:23,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:23,314 INFO L225 Difference]: With dead ends: 400 [2021-10-06 21:11:23,314 INFO L226 Difference]: Without dead ends: 400 [2021-10-06 21:11:23,315 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 28.6ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:11:23,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-10-06 21:11:23,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 298. [2021-10-06 21:11:23,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 296 states have (on average 3.3277027027027026) internal successors, (985), 297 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:23,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 985 transitions. [2021-10-06 21:11:23,326 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 985 transitions. Word has length 25 [2021-10-06 21:11:23,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:23,326 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 985 transitions. [2021-10-06 21:11:23,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:23,327 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 985 transitions. [2021-10-06 21:11:23,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:11:23,328 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:23,328 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:23,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-10-06 21:11:23,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:23,544 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:11:23,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:23,545 INFO L82 PathProgramCache]: Analyzing trace with hash 950923384, now seen corresponding path program 3 times [2021-10-06 21:11:23,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:23,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1234551084] [2021-10-06 21:11:23,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:11:23,546 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:23,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:23,548 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:23,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-06 21:11:24,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:11:24,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:11:24,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 21:11:24,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:24,314 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:11:24,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:24,383 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:11:24,383 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:24,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1234551084] [2021-10-06 21:11:24,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1234551084] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:11:24,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:11:24,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-06 21:11:24,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035641278] [2021-10-06 21:11:24,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 21:11:24,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:24,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 21:11:24,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:11:24,386 INFO L87 Difference]: Start difference. First operand 298 states and 985 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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) [2021-10-06 21:11:24,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:24,483 INFO L93 Difference]: Finished difference Result 392 states and 1214 transitions. [2021-10-06 21:11:24,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 21:11:24,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 25 [2021-10-06 21:11:24,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:24,487 INFO L225 Difference]: With dead ends: 392 [2021-10-06 21:11:24,487 INFO L226 Difference]: Without dead ends: 392 [2021-10-06 21:11:24,487 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.1ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:11:24,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-10-06 21:11:24,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 284. [2021-10-06 21:11:24,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 282 states have (on average 3.2907801418439715) internal successors, (928), 283 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:24,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 928 transitions. [2021-10-06 21:11:24,495 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 928 transitions. Word has length 25 [2021-10-06 21:11:24,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:24,496 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 928 transitions. [2021-10-06 21:11:24,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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) [2021-10-06 21:11:24,496 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 928 transitions. [2021-10-06 21:11:24,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:11:24,497 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:24,497 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:24,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:24,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:24,710 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:11:24,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:24,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1033910719, now seen corresponding path program 1 times [2021-10-06 21:11:24,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:24,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377165346] [2021-10-06 21:11:24,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:11:24,712 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:24,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:24,714 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:24,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-06 21:11:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:11:25,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:11:25,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:26,429 INFO L354 Elim1Store]: treesize reduction 204, result has 45.3 percent of original size [2021-10-06 21:11:26,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 104 treesize of output 228 [2021-10-06 21:11:26,460 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-06 21:11:26,460 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 228 treesize of output 224 [2021-10-06 21:11:26,497 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-06 21:11:26,497 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 211 treesize of output 215 [2021-10-06 21:11:28,755 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:11:28,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:30,261 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-10-06 21:11:30,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 198 treesize of output 328 [2021-10-06 21:11:30,327 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-06 21:11:30,328 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 328 treesize of output 332 [2021-10-06 21:11:30,389 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-06 21:11:30,389 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 332 treesize of output 336 [2021-10-06 21:11:40,083 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:11:40,083 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:40,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377165346] [2021-10-06 21:11:40,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377165346] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:11:40,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:11:40,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-10-06 21:11:40,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622043572] [2021-10-06 21:11:40,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:11:40,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:40,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:11:40,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:11:40,087 INFO L87 Difference]: Start difference. First operand 284 states and 928 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 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) [2021-10-06 21:11:40,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:40,593 INFO L93 Difference]: Finished difference Result 379 states and 1128 transitions. [2021-10-06 21:11:40,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:11:40,593 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 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 26 [2021-10-06 21:11:40,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:40,596 INFO L225 Difference]: With dead ends: 379 [2021-10-06 21:11:40,596 INFO L226 Difference]: Without dead ends: 364 [2021-10-06 21:11:40,596 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 523.1ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:11:40,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-10-06 21:11:40,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 316. [2021-10-06 21:11:40,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 314 states have (on average 3.1815286624203822) internal successors, (999), 315 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:40,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 999 transitions. [2021-10-06 21:11:40,606 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 999 transitions. Word has length 26 [2021-10-06 21:11:40,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:40,607 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 999 transitions. [2021-10-06 21:11:40,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 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) [2021-10-06 21:11:40,607 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 999 transitions. [2021-10-06 21:11:40,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:11:40,608 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:40,608 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:40,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:40,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:40,822 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:11:40,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:40,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1343077523, now seen corresponding path program 2 times [2021-10-06 21:11:40,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:40,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966130216] [2021-10-06 21:11:40,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:11:40,824 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:40,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:40,825 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:40,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-06 21:11:41,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:11:41,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:11:41,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:11:41,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:41,875 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:11:41,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:42,094 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:11:42,095 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:42,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966130216] [2021-10-06 21:11:42,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [966130216] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:11:42,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:11:42,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-06 21:11:42,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730004693] [2021-10-06 21:11:42,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:11:42,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:42,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:11:42,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:11:42,097 INFO L87 Difference]: Start difference. First operand 316 states and 999 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:42,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:42,371 INFO L93 Difference]: Finished difference Result 518 states and 1372 transitions. [2021-10-06 21:11:42,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-06 21:11:42,371 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-06 21:11:42,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:42,374 INFO L225 Difference]: With dead ends: 518 [2021-10-06 21:11:42,374 INFO L226 Difference]: Without dead ends: 518 [2021-10-06 21:11:42,374 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 226.4ms TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:11:42,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-10-06 21:11:42,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 298. [2021-10-06 21:11:42,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 3.127946127946128) internal successors, (929), 297 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:42,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 929 transitions. [2021-10-06 21:11:42,385 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 929 transitions. Word has length 26 [2021-10-06 21:11:42,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:42,385 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 929 transitions. [2021-10-06 21:11:42,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:42,385 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 929 transitions. [2021-10-06 21:11:42,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-06 21:11:42,386 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:42,387 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:42,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:42,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:42,601 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:11:42,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:42,602 INFO L82 PathProgramCache]: Analyzing trace with hash -979753694, now seen corresponding path program 1 times [2021-10-06 21:11:42,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:42,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030018533] [2021-10-06 21:11:42,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:11:42,603 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:42,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:42,605 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:42,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-06 21:11:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:11:43,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:11:43,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:44,599 INFO L354 Elim1Store]: treesize reduction 232, result has 42.1 percent of original size [2021-10-06 21:11:44,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 112 treesize of output 232 [2021-10-06 21:11:44,630 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-06 21:11:44,630 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 232 treesize of output 236 [2021-10-06 21:11:44,655 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-06 21:11:44,656 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 236 treesize of output 232 [2021-10-06 21:11:48,621 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:11:48,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:50,061 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-10-06 21:11:50,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 198 treesize of output 328 [2021-10-06 21:11:50,099 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-06 21:11:50,100 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 328 treesize of output 332 [2021-10-06 21:11:50,139 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-06 21:11:50,140 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 332 treesize of output 336 [2021-10-06 21:12:22,192 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-06 21:12:22,192 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:22,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030018533] [2021-10-06 21:12:22,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030018533] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:12:22,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:12:22,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-06 21:12:22,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599807821] [2021-10-06 21:12:22,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:12:22,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:22,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:12:22,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:12:22,195 INFO L87 Difference]: Start difference. First operand 298 states and 929 transitions. Second operand has 11 states, 10 states have (on average 2.5) internal successors, (25), 11 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) [2021-10-06 21:12:22,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:22,825 INFO L93 Difference]: Finished difference Result 514 states and 1414 transitions. [2021-10-06 21:12:22,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:12:22,826 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 11 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 27 [2021-10-06 21:12:22,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:22,828 INFO L225 Difference]: With dead ends: 514 [2021-10-06 21:12:22,828 INFO L226 Difference]: Without dead ends: 494 [2021-10-06 21:12:22,829 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 421.7ms TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:12:22,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2021-10-06 21:12:22,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 356. [2021-10-06 21:12:22,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 3.132394366197183) internal successors, (1112), 355 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:22,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 1112 transitions. [2021-10-06 21:12:22,842 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 1112 transitions. Word has length 27 [2021-10-06 21:12:22,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:22,842 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 1112 transitions. [2021-10-06 21:12:22,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 11 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) [2021-10-06 21:12:22,842 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 1112 transitions. [2021-10-06 21:12:22,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:12:22,844 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:22,844 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:22,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:23,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:12:23,058 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-06 21:12:23,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:23,059 INFO L82 PathProgramCache]: Analyzing trace with hash 911079946, now seen corresponding path program 1 times [2021-10-06 21:12:23,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:23,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [879674228] [2021-10-06 21:12:23,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:12:23,061 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:23,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:23,062 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:12:23,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-06 21:12:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:12:23,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:12:23,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:24,880 INFO L354 Elim1Store]: treesize reduction 204, result has 45.3 percent of original size [2021-10-06 21:12:24,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 104 treesize of output 228 [2021-10-06 21:12:24,897 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-06 21:12:24,898 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 228 treesize of output 224 [2021-10-06 21:12:24,934 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-06 21:12:24,935 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 211 treesize of output 215 [2021-10-06 21:12:28,063 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-10-06 21:12:28,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:29,553 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-10-06 21:12:29,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 198 treesize of output 328 [2021-10-06 21:12:29,607 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-06 21:12:29,608 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 328 treesize of output 332 [2021-10-06 21:12:29,650 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-06 21:12:29,650 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 332 treesize of output 336 Received shutdown request... [2021-10-06 21:12:41,674 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-06 21:12:41,690 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-06 21:12:41,713 WARN L223 SmtUtils]: Removed 1 from assertion stack [2021-10-06 21:12:41,715 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:12:41,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:41,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:12:41,917 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 29 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 1ms.. [2021-10-06 21:12:41,920 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-06 21:12:41,920 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-06 21:12:41,920 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATION [2021-10-06 21:12:41,921 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATION [2021-10-06 21:12:41,921 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-06 21:12:41,921 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-06 21:12:41,921 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2REQUIRES_VIOLATION [2021-10-06 21:12:41,921 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3REQUIRES_VIOLATION [2021-10-06 21:12:41,921 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 21:12:41,921 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 21:12:41,922 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 21:12:41,922 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 21:12:41,922 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 21:12:41,922 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 21:12:41,922 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 21:12:41,922 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 21:12:41,922 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-06 21:12:41,922 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-06 21:12:41,923 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-06 21:12:41,923 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-06 21:12:41,923 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:12:41,923 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 21:12:41,923 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 21:12:41,923 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-06 21:12:41,923 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-06 21:12:41,924 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATION [2021-10-06 21:12:41,924 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATION [2021-10-06 21:12:41,924 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-06 21:12:41,924 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-06 21:12:41,924 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2REQUIRES_VIOLATION [2021-10-06 21:12:41,924 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3REQUIRES_VIOLATION [2021-10-06 21:12:41,931 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 21:12:41,931 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 21:12:41,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 09:12:41 BasicIcfg [2021-10-06 21:12:41,933 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 21:12:41,934 INFO L168 Benchmark]: Toolchain (without parser) took 807823.37 ms. Allocated memory was 161.5 MB in the beginning and 212.9 MB in the end (delta: 51.4 MB). Free memory was 137.1 MB in the beginning and 118.0 MB in the end (delta: 19.1 MB). Peak memory consumption was 161.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:12:41,935 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 161.5 MB. Free memory is still 132.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 21:12:41,935 INFO L168 Benchmark]: CACSL2BoogieTranslator took 451.47 ms. Allocated memory is still 161.5 MB. Free memory was 136.9 MB in the beginning and 124.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-10-06 21:12:41,935 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.89 ms. Allocated memory is still 161.5 MB. Free memory was 124.3 MB in the beginning and 122.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:12:41,936 INFO L168 Benchmark]: Boogie Preprocessor took 90.25 ms. Allocated memory is still 161.5 MB. Free memory was 122.3 MB in the beginning and 120.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:12:41,936 INFO L168 Benchmark]: RCFGBuilder took 930.56 ms. Allocated memory is still 161.5 MB. Free memory was 120.5 MB in the beginning and 137.2 MB in the end (delta: -16.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-10-06 21:12:41,936 INFO L168 Benchmark]: TraceAbstraction took 806234.77 ms. Allocated memory was 161.5 MB in the beginning and 212.9 MB in the end (delta: 51.4 MB). Free memory was 136.4 MB in the beginning and 118.0 MB in the end (delta: 18.4 MB). Peak memory consumption was 160.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:12:41,938 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 161.5 MB. Free memory is still 132.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 451.47 ms. Allocated memory is still 161.5 MB. Free memory was 136.9 MB in the beginning and 124.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 102.89 ms. Allocated memory is still 161.5 MB. Free memory was 124.3 MB in the beginning and 122.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 90.25 ms. Allocated memory is still 161.5 MB. Free memory was 122.3 MB in the beginning and 120.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 930.56 ms. Allocated memory is still 161.5 MB. Free memory was 120.5 MB in the beginning and 137.2 MB in the end (delta: -16.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 806234.77 ms. Allocated memory was 161.5 MB in the beginning and 212.9 MB in the end (delta: 51.4 MB). Free memory was 136.4 MB in the beginning and 118.0 MB in the end (delta: 18.4 MB). Peak memory consumption was 160.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 21689.3ms, 173 PlacesBefore, 47 PlacesAfterwards, 183 TransitionsBefore, 45 TransitionsAfterwards, 2400 CoEnabledTransitionPairs, 6 FixpointIterations, 111 TrivialSequentialCompositions, 58 ConcurrentSequentialCompositions, 13 TrivialYvCompositions, 6 ConcurrentYvCompositions, 12 ChoiceCompositions, 200 TotalNumberOfCompositions, 2746 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2620, positive: 2585, positive conditional: 0, positive unconditional: 2585, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1454, positive: 1445, positive conditional: 0, positive unconditional: 1445, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1454, positive: 1445, positive conditional: 0, positive unconditional: 1445, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 9, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 710, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 710, negative conditional: 0, negative unconditional: 710, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2620, positive: 1140, positive conditional: 0, positive unconditional: 1140, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 1454, unknown conditional: 0, unknown unconditional: 1454] , Statistics on independence cache: Total cache size (in pairs): 86, Positive cache size: 83, Positive conditional cache size: 0, Positive unconditional cache size: 83, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 29 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 1ms.. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 29 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 1ms.. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 29 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 1ms.. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 29 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 1ms.. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 29 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 1ms.. - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 29 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 1ms.. - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 29 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 1ms.. - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 29 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 1ms.. - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 29 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 1ms.. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 29 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 1ms.. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 29 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 1ms.. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 29 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 1ms.. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 29 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 1ms.. - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 29 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 1ms.. - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 29 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 1ms.. - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 29 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 1ms.. - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 29 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 1ms.. - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 29 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 1ms.. - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 29 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 1ms.. - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 29 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 1ms.. - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 29 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 1ms.. - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 29 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 1ms.. - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 29 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 1ms.. - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 29 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 1ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 213 locations, 32 error locations. Started 1 CEGAR loops. OverallTime: 806040.0ms, OverallIterations: 29, TraceHistogramMax: 5, EmptinessCheckTime: 44.5ms, AutomataDifference: 77237.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 21765.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 680 SDtfs, 3129 SDslu, 2204 SDs, 0 SdLazy, 2217 SolverSat, 303 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 43627.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 921 GetRequests, 696 SyntacticMatches, 4 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 70913.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=366occurred in iteration=19, InterpolantAutomatonStates: 179, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 376.9ms AutomataMinimizationTime, 28 MinimizatonAttempts, 3493 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 308.8ms SsaConstructionTime, 4258.6ms SatisfiabilityAnalysisTime, 669146.0ms InterpolantComputationTime, 461 NumberOfCodeBlocks, 416 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 866 ConstructedInterpolants, 201 QuantifiedInterpolants, 25717 SizeOfPredicates, 180 NumberOfNonLiveVariables, 3492 ConjunctsInSsa, 229 ConjunctsInUnsatCore, 56 InterpolantComputations, 35 PerfectInterpolantSequences, 1351/1508 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: Timeout Completed graceful shutdown