/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-name-comparator-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 15:32:30,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 15:32:30,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 15:32:30,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 15:32:30,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-07 15:32:30,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-07 15:32:30,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-07 15:32:30,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-07 15:32:30,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-07 15:32:30,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-07 15:32:30,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-07 15:32:30,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-07 15:32:30,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-07 15:32:30,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-07 15:32:30,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-07 15:32:30,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-07 15:32:30,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-07 15:32:30,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-07 15:32:30,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-07 15:32:30,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-07 15:32:30,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-07 15:32:30,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-07 15:32:30,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-07 15:32:30,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-07 15:32:30,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-07 15:32:30,504 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 15:32:30,505 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 15:32:30,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 15:32:30,508 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-07 15:32:30,569 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 15:32:30,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 15:32:30,570 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 15:32:30,571 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 15:32:30,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 15:32:30,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 15:32:30,573 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 15:32:30,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 15:32:30,574 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 15:32:30,574 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 15:32:30,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 15:32:30,574 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 15:32:30,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 15:32:30,574 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 15:32:30,575 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 15:32:30,577 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 15:32:30,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 15:32:30,577 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 15:32:30,577 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 15:32:30,577 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 15:32:30,578 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 15:32:30,578 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 15:32:30,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 15:32:30,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 15:32:30,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 15:32:30,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:32:30,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 15:32:30,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 15:32:30,580 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 15:32:30,580 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 15:32:30,580 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 15:32:30,581 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 15:32:30,581 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 15:32:31,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 15:32:31,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 15:32:31,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 15:32:31,054 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 15:32:31,054 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 15:32:31,056 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2021-10-07 15:32:31,149 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00ddca7b9/71d8c7aa7f334ef1a2e386d1dcd9f97c/FLAG2a604361e [2021-10-07 15:32:31,960 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 15:32:31,960 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2021-10-07 15:32:31,973 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00ddca7b9/71d8c7aa7f334ef1a2e386d1dcd9f97c/FLAG2a604361e [2021-10-07 15:32:32,252 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00ddca7b9/71d8c7aa7f334ef1a2e386d1dcd9f97c [2021-10-07 15:32:32,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 15:32:32,263 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 15:32:32,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 15:32:32,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 15:32:32,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 15:32:32,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:32:32" (1/1) ... [2021-10-07 15:32:32,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@316613f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:32:32, skipping insertion in model container [2021-10-07 15:32:32,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:32:32" (1/1) ... [2021-10-07 15:32:32,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 15:32:32,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:32:32,550 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-name-comparator-trans.wvr.c[5269,5282] [2021-10-07 15:32:32,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:32:32,579 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-07 15:32:32,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:32:32,647 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-name-comparator-trans.wvr.c[5269,5282] [2021-10-07 15:32:32,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:32:32,674 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 15:32:32,713 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-name-comparator-trans.wvr.c[5269,5282] [2021-10-07 15:32:32,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:32:32,739 INFO L208 MainTranslator]: Completed translation [2021-10-07 15:32:32,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:32:32 WrapperNode [2021-10-07 15:32:32,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 15:32:32,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 15:32:32,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 15:32:32,742 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 15:32:32,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:32:32" (1/1) ... [2021-10-07 15:32:32,791 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:32:32" (1/1) ... [2021-10-07 15:32:32,858 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 15:32:32,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 15:32:32,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 15:32:32,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 15:32:32,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:32:32" (1/1) ... [2021-10-07 15:32:32,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:32:32" (1/1) ... [2021-10-07 15:32:32,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:32:32" (1/1) ... [2021-10-07 15:32:32,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:32:32" (1/1) ... [2021-10-07 15:32:32,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:32:32" (1/1) ... [2021-10-07 15:32:32,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:32:32" (1/1) ... [2021-10-07 15:32:32,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:32:32" (1/1) ... [2021-10-07 15:32:32,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 15:32:32,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 15:32:32,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 15:32:32,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 15:32:32,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:32:32" (1/1) ... [2021-10-07 15:32:32,955 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:32:32,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:32:32,986 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) [2021-10-07 15:32:33,012 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 [2021-10-07 15:32:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 15:32:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 15:32:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 15:32:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 15:32:33,059 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 15:32:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 15:32:33,059 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 15:32:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-07 15:32:33,059 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-07 15:32:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-07 15:32:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-07 15:32:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-07 15:32:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 15:32:33,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 15:32:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 15:32:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 15:32:33,063 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 15:32:35,276 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 15:32:35,277 INFO L299 CfgBuilder]: Removed 28 assume(true) statements. [2021-10-07 15:32:35,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:32:35 BoogieIcfgContainer [2021-10-07 15:32:35,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 15:32:35,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 15:32:35,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 15:32:35,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 15:32:35,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:32:32" (1/3) ... [2021-10-07 15:32:35,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a450fec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:32:35, skipping insertion in model container [2021-10-07 15:32:35,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:32:32" (2/3) ... [2021-10-07 15:32:35,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a450fec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:32:35, skipping insertion in model container [2021-10-07 15:32:35,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:32:35" (3/3) ... [2021-10-07 15:32:35,290 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-trans.wvr.c [2021-10-07 15:32:35,297 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 15:32:35,298 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-10-07 15:32:35,298 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 15:32:35,347 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,348 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,348 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,348 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,349 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,349 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,349 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,349 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,350 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,350 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,350 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,350 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,351 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,351 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,351 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,351 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,352 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,352 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,352 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,352 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,352 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,353 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,353 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,353 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,353 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,354 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,354 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,354 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,354 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,355 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,355 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,355 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,355 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,356 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,356 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,356 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,356 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,356 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,357 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,357 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,357 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,358 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,358 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,358 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,358 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,358 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,360 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,360 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,360 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,360 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,361 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,361 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,361 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,361 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,362 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,362 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,362 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,362 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,362 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,363 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,363 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,363 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,363 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,364 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,364 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,364 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,364 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,364 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,364 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,365 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,365 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,365 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,365 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,366 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,366 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,366 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,366 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,367 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,367 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,367 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,367 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,367 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,367 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,368 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,368 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,369 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,369 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,369 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,369 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,369 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,369 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,370 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,371 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,371 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,371 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,371 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,372 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,372 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,372 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,372 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,373 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,373 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,373 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,373 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,374 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,374 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,374 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,374 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,374 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,375 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,375 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,375 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,375 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,375 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,376 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,376 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,376 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,376 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,377 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,377 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,377 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,377 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,377 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,378 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,378 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,378 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,378 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,378 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,379 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,379 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,379 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,380 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,380 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,380 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,380 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,380 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,380 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,381 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,385 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,385 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,385 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,385 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,386 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,386 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,386 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,386 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,387 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,387 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,387 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,387 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,387 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,388 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,390 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,391 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,391 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,391 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,391 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,392 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,392 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,392 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,392 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,392 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,393 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,393 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,393 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,393 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,398 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,399 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,399 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,399 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,400 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,400 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,400 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,400 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,401 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,401 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,401 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,401 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,401 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,402 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:32:35,416 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-07 15:32:35,492 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 15:32:35,501 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 [2021-10-07 15:32:35,501 INFO L340 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2021-10-07 15:32:35,523 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 15:32:35,535 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 190 places, 191 transitions, 406 flow [2021-10-07 15:32:35,539 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 190 places, 191 transitions, 406 flow [2021-10-07 15:32:35,541 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 190 places, 191 transitions, 406 flow [2021-10-07 15:32:35,622 INFO L129 PetriNetUnfolder]: 11/188 cut-off events. [2021-10-07 15:32:35,622 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-07 15:32:35,628 INFO L84 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 188 events. 11/188 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 182 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 142. Up to 2 conditions per place. [2021-10-07 15:32:35,633 INFO L116 LiptonReduction]: Number of co-enabled transitions 2160 [2021-10-07 15:33:02,523 INFO L131 LiptonReduction]: Checked pairs total: 2889 [2021-10-07 15:33:02,524 INFO L133 LiptonReduction]: Total number of compositions: 198 [2021-10-07 15:33:02,538 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 49 transitions, 122 flow [2021-10-07 15:33:02,607 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 750 states, 616 states have (on average 4.165584415584416) internal successors, (2566), 749 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:02,613 INFO L276 IsEmpty]: Start isEmpty. Operand has 750 states, 616 states have (on average 4.165584415584416) internal successors, (2566), 749 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:02,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 15:33:02,618 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:02,619 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 15:33:02,619 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:33:02,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:02,626 INFO L82 PathProgramCache]: Analyzing trace with hash 37175, now seen corresponding path program 1 times [2021-10-07 15:33:02,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:02,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651162238] [2021-10-07 15:33:02,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:33:02,641 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:02,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:02,644 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) [2021-10-07 15:33:02,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-07 15:33:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:33:02,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:33:02,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:02,862 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 15:33:02,863 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 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-07 15:33:02,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:33:02,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:02,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:33:02,920 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:02,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651162238] [2021-10-07 15:33:02,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651162238] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:33:02,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:33:02,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:33:02,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068647921] [2021-10-07 15:33:02,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:33:02,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:02,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:33:02,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:33:02,960 INFO L87 Difference]: Start difference. First operand has 750 states, 616 states have (on average 4.165584415584416) internal successors, (2566), 749 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:03,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:33:03,204 INFO L93 Difference]: Finished difference Result 748 states and 2564 transitions. [2021-10-07 15:33:03,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:33:03,213 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 [2021-10-07 15:33:03,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:03,268 INFO L225 Difference]: With dead ends: 748 [2021-10-07 15:33:03,268 INFO L226 Difference]: Without dead ends: 748 [2021-10-07 15:33:03,270 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:33:03,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2021-10-07 15:33:03,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 748. [2021-10-07 15:33:03,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 616 states have (on average 4.162337662337662) internal successors, (2564), 747 states have internal predecessors, (2564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:03,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 2564 transitions. [2021-10-07 15:33:03,400 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 2564 transitions. Word has length 2 [2021-10-07 15:33:03,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:33:03,401 INFO L470 AbstractCegarLoop]: Abstraction has 748 states and 2564 transitions. [2021-10-07 15:33:03,401 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) [2021-10-07 15:33:03,402 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 2564 transitions. [2021-10-07 15:33:03,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 15:33:03,402 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:03,402 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 15:33:03,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-07 15:33:03,615 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 [2021-10-07 15:33:03,615 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:33:03,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:03,616 INFO L82 PathProgramCache]: Analyzing trace with hash 37177, now seen corresponding path program 1 times [2021-10-07 15:33:03,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:03,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068885092] [2021-10-07 15:33:03,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:33:03,618 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:03,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:03,619 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) [2021-10-07 15:33:03,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-07 15:33:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:33:03,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:33:03,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:03,996 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-07 15:33:03,996 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 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-07 15:33:04,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:33:04,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:04,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:33:04,199 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:04,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068885092] [2021-10-07 15:33:04,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1068885092] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:33:04,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:33:04,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:33:04,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314003990] [2021-10-07 15:33:04,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:33:04,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:04,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:33:04,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:33:04,203 INFO L87 Difference]: Start difference. First operand 748 states and 2564 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:05,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:33:05,177 INFO L93 Difference]: Finished difference Result 2240 states and 7688 transitions. [2021-10-07 15:33:05,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:33:05,179 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-07 15:33:05,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:05,207 INFO L225 Difference]: With dead ends: 2240 [2021-10-07 15:33:05,208 INFO L226 Difference]: Without dead ends: 2240 [2021-10-07 15:33:05,208 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 77.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:33:05,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2240 states. [2021-10-07 15:33:05,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2240 to 750. [2021-10-07 15:33:05,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 618 states have (on average 4.1618122977346275) internal successors, (2572), 749 states have internal predecessors, (2572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:05,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 2572 transitions. [2021-10-07 15:33:05,322 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 2572 transitions. Word has length 2 [2021-10-07 15:33:05,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:33:05,324 INFO L470 AbstractCegarLoop]: Abstraction has 750 states and 2572 transitions. [2021-10-07 15:33:05,324 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) [2021-10-07 15:33:05,324 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 2572 transitions. [2021-10-07 15:33:05,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 15:33:05,325 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:05,325 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 15:33:05,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-07 15:33:05,538 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 [2021-10-07 15:33:05,539 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:33:05,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:05,541 INFO L82 PathProgramCache]: Analyzing trace with hash 37308, now seen corresponding path program 1 times [2021-10-07 15:33:05,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:05,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1246197217] [2021-10-07 15:33:05,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:33:05,542 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:05,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:05,545 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) [2021-10-07 15:33:05,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-07 15:33:05,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:33:05,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:33:05,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:05,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:33:05,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:05,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:33:05,649 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:05,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1246197217] [2021-10-07 15:33:05,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1246197217] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:33:05,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:33:05,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:33:05,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017226136] [2021-10-07 15:33:05,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:33:05,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:05,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:33:05,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:33:05,654 INFO L87 Difference]: Start difference. First operand 750 states and 2572 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:05,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:33:05,727 INFO L93 Difference]: Finished difference Result 750 states and 2566 transitions. [2021-10-07 15:33:05,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:33:05,729 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 [2021-10-07 15:33:05,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:05,737 INFO L225 Difference]: With dead ends: 750 [2021-10-07 15:33:05,737 INFO L226 Difference]: Without dead ends: 750 [2021-10-07 15:33:05,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:33:05,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2021-10-07 15:33:05,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 750. [2021-10-07 15:33:05,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 618 states have (on average 4.15210355987055) internal successors, (2566), 749 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:05,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 2566 transitions. [2021-10-07 15:33:05,774 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 2566 transitions. Word has length 2 [2021-10-07 15:33:05,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:33:05,774 INFO L470 AbstractCegarLoop]: Abstraction has 750 states and 2566 transitions. [2021-10-07 15:33:05,775 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) [2021-10-07 15:33:05,775 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 2566 transitions. [2021-10-07 15:33:05,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 15:33:05,783 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:05,783 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-07 15:33:05,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-07 15:33:05,995 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 [2021-10-07 15:33:05,996 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:33:05,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:05,997 INFO L82 PathProgramCache]: Analyzing trace with hash 35887065, now seen corresponding path program 1 times [2021-10-07 15:33:05,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:05,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524205548] [2021-10-07 15:33:05,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:33:05,999 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:05,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:06,001 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) [2021-10-07 15:33:06,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-07 15:33:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:33:06,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:33:06,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:06,350 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-07 15:33:06,351 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 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-07 15:33:06,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:33:06,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:06,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:33:06,858 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:06,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524205548] [2021-10-07 15:33:06,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524205548] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:33:06,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:33:06,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 15:33:06,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098087799] [2021-10-07 15:33:06,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:33:06,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:06,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:33:06,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:33:06,861 INFO L87 Difference]: Start difference. First operand 750 states and 2566 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) [2021-10-07 15:33:07,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:33:07,449 INFO L93 Difference]: Finished difference Result 1496 states and 5128 transitions. [2021-10-07 15:33:07,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:33:07,452 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 [2021-10-07 15:33:07,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:07,469 INFO L225 Difference]: With dead ends: 1496 [2021-10-07 15:33:07,469 INFO L226 Difference]: Without dead ends: 1496 [2021-10-07 15:33:07,470 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 319.8ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:33:07,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-10-07 15:33:07,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 751. [2021-10-07 15:33:07,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 619 states have (on average 4.1518578352180935) internal successors, (2570), 750 states have internal predecessors, (2570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:07,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 2570 transitions. [2021-10-07 15:33:07,516 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 2570 transitions. Word has length 4 [2021-10-07 15:33:07,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:33:07,516 INFO L470 AbstractCegarLoop]: Abstraction has 751 states and 2570 transitions. [2021-10-07 15:33:07,517 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) [2021-10-07 15:33:07,517 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 2570 transitions. [2021-10-07 15:33:07,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 15:33:07,517 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:07,518 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-07 15:33:07,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-07 15:33:07,729 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 [2021-10-07 15:33:07,729 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:33:07,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:07,731 INFO L82 PathProgramCache]: Analyzing trace with hash 35887196, now seen corresponding path program 1 times [2021-10-07 15:33:07,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:07,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515636780] [2021-10-07 15:33:07,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:33:07,733 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:07,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:07,734 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) [2021-10-07 15:33:07,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-07 15:33:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:33:07,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:33:07,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:07,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:33:07,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:07,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:33:07,970 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:07,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515636780] [2021-10-07 15:33:07,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [515636780] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:33:07,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:33:07,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 15:33:07,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846055352] [2021-10-07 15:33:07,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:33:07,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:07,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:33:07,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:33:07,975 INFO L87 Difference]: Start difference. First operand 751 states and 2570 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) [2021-10-07 15:33:08,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:33:08,129 INFO L93 Difference]: Finished difference Result 751 states and 2567 transitions. [2021-10-07 15:33:08,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:33:08,131 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 [2021-10-07 15:33:08,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:08,139 INFO L225 Difference]: With dead ends: 751 [2021-10-07 15:33:08,139 INFO L226 Difference]: Without dead ends: 751 [2021-10-07 15:33:08,140 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 94.8ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:33:08,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2021-10-07 15:33:08,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 751. [2021-10-07 15:33:08,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 619 states have (on average 4.147011308562197) internal successors, (2567), 750 states have internal predecessors, (2567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:08,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 2567 transitions. [2021-10-07 15:33:08,233 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 2567 transitions. Word has length 4 [2021-10-07 15:33:08,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:33:08,233 INFO L470 AbstractCegarLoop]: Abstraction has 751 states and 2567 transitions. [2021-10-07 15:33:08,233 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) [2021-10-07 15:33:08,234 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 2567 transitions. [2021-10-07 15:33:08,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:33:08,234 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:08,234 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1] [2021-10-07 15:33:08,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-07 15:33:08,447 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 [2021-10-07 15:33:08,449 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:33:08,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:08,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1112504014, now seen corresponding path program 2 times [2021-10-07 15:33:08,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:08,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370427010] [2021-10-07 15:33:08,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:33:08,451 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:08,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:08,453 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) [2021-10-07 15:33:08,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-07 15:33:08,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:33:08,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:33:08,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:33:08,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:08,632 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:33:08,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:08,729 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:33:08,729 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:08,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1370427010] [2021-10-07 15:33:08,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1370427010] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:33:08,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:33:08,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-07 15:33:08,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545687009] [2021-10-07 15:33:08,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:33:08,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:08,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:33:08,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:33:08,732 INFO L87 Difference]: Start difference. First operand 751 states and 2567 transitions. Second operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 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) [2021-10-07 15:33:08,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:33:08,857 INFO L93 Difference]: Finished difference Result 750 states and 2565 transitions. [2021-10-07 15:33:08,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:33:08,859 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 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 5 [2021-10-07 15:33:08,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:08,867 INFO L225 Difference]: With dead ends: 750 [2021-10-07 15:33:08,867 INFO L226 Difference]: Without dead ends: 750 [2021-10-07 15:33:08,868 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 99.7ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:33:08,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2021-10-07 15:33:08,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 750. [2021-10-07 15:33:08,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 619 states have (on average 4.143780290791599) internal successors, (2565), 749 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:08,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 2565 transitions. [2021-10-07 15:33:08,903 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 2565 transitions. Word has length 5 [2021-10-07 15:33:08,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:33:08,903 INFO L470 AbstractCegarLoop]: Abstraction has 750 states and 2565 transitions. [2021-10-07 15:33:08,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 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) [2021-10-07 15:33:08,904 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 2565 transitions. [2021-10-07 15:33:08,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:33:08,904 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:08,904 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1] [2021-10-07 15:33:08,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-07 15:33:09,116 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 [2021-10-07 15:33:09,120 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:33:09,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:09,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1112504145, now seen corresponding path program 2 times [2021-10-07 15:33:09,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:09,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627738235] [2021-10-07 15:33:09,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:33:09,121 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:09,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:09,123 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) [2021-10-07 15:33:09,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-07 15:33:09,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:33:09,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:33:09,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:33:09,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:09,273 INFO L354 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2021-10-07 15:33:09,273 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 6 case distinctions, treesize of input 44 treesize of output 54 [2021-10-07 15:33:09,589 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:09,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:09,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:09,611 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:09,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627738235] [2021-10-07 15:33:09,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627738235] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:33:09,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:33:09,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:33:09,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566575912] [2021-10-07 15:33:09,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:33:09,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:09,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:33:09,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:33:09,614 INFO L87 Difference]: Start difference. First operand 750 states and 2565 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:09,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:33:09,747 INFO L93 Difference]: Finished difference Result 624 states and 2064 transitions. [2021-10-07 15:33:09,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:33:09,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:33:09,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:09,754 INFO L225 Difference]: With dead ends: 624 [2021-10-07 15:33:09,755 INFO L226 Difference]: Without dead ends: 624 [2021-10-07 15:33:09,755 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:33:09,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-10-07 15:33:09,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 624. [2021-10-07 15:33:09,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 521 states have (on average 3.9616122840690977) internal successors, (2064), 623 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:09,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 2064 transitions. [2021-10-07 15:33:09,780 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 2064 transitions. Word has length 5 [2021-10-07 15:33:09,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:33:09,781 INFO L470 AbstractCegarLoop]: Abstraction has 624 states and 2064 transitions. [2021-10-07 15:33:09,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:09,781 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 2064 transitions. [2021-10-07 15:33:09,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:33:09,781 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:09,782 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1] [2021-10-07 15:33:09,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-07 15:33:09,996 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 [2021-10-07 15:33:09,998 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:33:09,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:09,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1112504147, now seen corresponding path program 1 times [2021-10-07 15:33:10,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:10,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034857051] [2021-10-07 15:33:10,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:33:10,000 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:10,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:10,001 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) [2021-10-07 15:33:10,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-07 15:33:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:33:10,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:33:10,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:10,378 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-07 15:33:10,378 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 5 case distinctions, treesize of input 47 treesize of output 97 [2021-10-07 15:33:10,394 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-07 15:33:10,394 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 100 treesize of output 96 [2021-10-07 15:33:13,388 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:13,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:13,447 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:13,448 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:13,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034857051] [2021-10-07 15:33:13,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034857051] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:33:13,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:33:13,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:33:13,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73554583] [2021-10-07 15:33:13,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:33:13,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:13,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:33:13,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:33:13,449 INFO L87 Difference]: Start difference. First operand 624 states and 2064 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:13,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:33:13,618 INFO L93 Difference]: Finished difference Result 498 states and 1563 transitions. [2021-10-07 15:33:13,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:33:13,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:33:13,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:13,624 INFO L225 Difference]: With dead ends: 498 [2021-10-07 15:33:13,624 INFO L226 Difference]: Without dead ends: 498 [2021-10-07 15:33:13,624 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:33:13,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2021-10-07 15:33:13,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 498. [2021-10-07 15:33:13,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 423 states have (on average 3.6950354609929077) internal successors, (1563), 497 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:13,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1563 transitions. [2021-10-07 15:33:13,646 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1563 transitions. Word has length 5 [2021-10-07 15:33:13,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:33:13,646 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 1563 transitions. [2021-10-07 15:33:13,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:13,646 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1563 transitions. [2021-10-07 15:33:13,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:33:13,647 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:13,647 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2021-10-07 15:33:13,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-07 15:33:13,861 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 [2021-10-07 15:33:13,862 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:33:13,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:13,862 INFO L82 PathProgramCache]: Analyzing trace with hash -330342402, now seen corresponding path program 1 times [2021-10-07 15:33:13,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:13,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1073116849] [2021-10-07 15:33:13,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:33:13,864 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:13,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:13,865 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) [2021-10-07 15:33:13,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-07 15:33:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:33:14,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:33:14,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:14,059 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 15:33:14,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 45 [2021-10-07 15:33:14,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:14,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:14,438 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:14,438 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:14,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1073116849] [2021-10-07 15:33:14,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1073116849] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:33:14,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:33:14,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:33:14,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329698900] [2021-10-07 15:33:14,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:33:14,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:14,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:33:14,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:33:14,440 INFO L87 Difference]: Start difference. First operand 498 states and 1563 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-10-07 15:33:14,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:33:14,562 INFO L93 Difference]: Finished difference Result 468 states and 1478 transitions. [2021-10-07 15:33:14,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:33:14,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 [2021-10-07 15:33:14,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:14,568 INFO L225 Difference]: With dead ends: 468 [2021-10-07 15:33:14,569 INFO L226 Difference]: Without dead ends: 468 [2021-10-07 15:33:14,569 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:33:14,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-10-07 15:33:14,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 468. [2021-10-07 15:33:14,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 405 states have (on average 3.6493827160493826) internal successors, (1478), 467 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:14,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1478 transitions. [2021-10-07 15:33:14,587 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1478 transitions. Word has length 7 [2021-10-07 15:33:14,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:33:14,587 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 1478 transitions. [2021-10-07 15:33:14,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-10-07 15:33:14,588 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1478 transitions. [2021-10-07 15:33:14,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:33:14,588 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:14,588 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2021-10-07 15:33:14,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-07 15:33:14,801 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 [2021-10-07 15:33:14,801 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:33:14,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:14,802 INFO L82 PathProgramCache]: Analyzing trace with hash -330342400, now seen corresponding path program 1 times [2021-10-07 15:33:14,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:14,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [879162471] [2021-10-07 15:33:14,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:33:14,804 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:14,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:14,805 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) [2021-10-07 15:33:14,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-07 15:33:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:33:14,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:33:14,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:15,212 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-07 15:33:15,213 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 5 case distinctions, treesize of input 37 treesize of output 87 [2021-10-07 15:33:15,218 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 89 treesize of output 87 [2021-10-07 15:33:19,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:19,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:19,403 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:19,403 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:19,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [879162471] [2021-10-07 15:33:19,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [879162471] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:33:19,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:33:19,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:33:19,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639570867] [2021-10-07 15:33:19,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:33:19,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:19,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:33:19,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:33:19,408 INFO L87 Difference]: Start difference. First operand 468 states and 1478 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-10-07 15:33:19,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:33:19,588 INFO L93 Difference]: Finished difference Result 438 states and 1393 transitions. [2021-10-07 15:33:19,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:33:19,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 [2021-10-07 15:33:19,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:19,594 INFO L225 Difference]: With dead ends: 438 [2021-10-07 15:33:19,594 INFO L226 Difference]: Without dead ends: 438 [2021-10-07 15:33:19,594 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:33:19,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-10-07 15:33:19,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 438. [2021-10-07 15:33:19,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 387 states have (on average 3.599483204134367) internal successors, (1393), 437 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:19,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 1393 transitions. [2021-10-07 15:33:19,610 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 1393 transitions. Word has length 7 [2021-10-07 15:33:19,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:33:19,610 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 1393 transitions. [2021-10-07 15:33:19,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-10-07 15:33:19,610 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 1393 transitions. [2021-10-07 15:33:19,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 15:33:19,611 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:19,611 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2021-10-07 15:33:19,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-07 15:33:19,823 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 [2021-10-07 15:33:19,823 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:33:19,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:19,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1650685283, now seen corresponding path program 1 times [2021-10-07 15:33:19,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:19,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071131586] [2021-10-07 15:33:19,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:33:19,825 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:19,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:19,826 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) [2021-10-07 15:33:19,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-07 15:33:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:33:19,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:33:19,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:20,001 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 15:33:20,001 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 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-07 15:33:20,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:20,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:20,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:20,073 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:20,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071131586] [2021-10-07 15:33:20,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071131586] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:33:20,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:33:20,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-07 15:33:20,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213033956] [2021-10-07 15:33:20,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:33:20,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:20,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:33:20,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:33:20,075 INFO L87 Difference]: Start difference. First operand 438 states and 1393 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:20,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:33:20,210 INFO L93 Difference]: Finished difference Result 256 states and 792 transitions. [2021-10-07 15:33:20,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:33:20,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 15:33:20,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:20,214 INFO L225 Difference]: With dead ends: 256 [2021-10-07 15:33:20,214 INFO L226 Difference]: Without dead ends: 256 [2021-10-07 15:33:20,214 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:33:20,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-07 15:33:20,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2021-10-07 15:33:20,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 236 states have (on average 3.3559322033898304) internal successors, (792), 255 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) [2021-10-07 15:33:20,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 792 transitions. [2021-10-07 15:33:20,224 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 792 transitions. Word has length 8 [2021-10-07 15:33:20,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:33:20,224 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 792 transitions. [2021-10-07 15:33:20,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:20,224 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 792 transitions. [2021-10-07 15:33:20,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 15:33:20,225 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:20,225 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2021-10-07 15:33:20,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-07 15:33:20,437 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 [2021-10-07 15:33:20,438 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:33:20,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:20,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1650685282, now seen corresponding path program 1 times [2021-10-07 15:33:20,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:20,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371947188] [2021-10-07 15:33:20,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:33:20,440 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:20,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:20,441 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) [2021-10-07 15:33:20,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-07 15:33:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:33:20,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:33:20,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:20,817 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-07 15:33:20,818 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 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-07 15:33:20,929 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:20,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:21,160 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:21,160 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:21,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1371947188] [2021-10-07 15:33:21,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1371947188] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:33:21,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:33:21,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-07 15:33:21,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315204157] [2021-10-07 15:33:21,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:33:21,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:21,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:33:21,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:33:21,163 INFO L87 Difference]: Start difference. First operand 256 states and 792 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:21,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:33:21,574 INFO L93 Difference]: Finished difference Result 556 states and 1708 transitions. [2021-10-07 15:33:21,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:33:21,576 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 15:33:21,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:21,581 INFO L225 Difference]: With dead ends: 556 [2021-10-07 15:33:21,581 INFO L226 Difference]: Without dead ends: 556 [2021-10-07 15:33:21,581 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 217.5ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:33:21,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-10-07 15:33:21,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 356. [2021-10-07 15:33:21,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 336 states have (on average 3.630952380952381) internal successors, (1220), 355 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:21,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 1220 transitions. [2021-10-07 15:33:21,597 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 1220 transitions. Word has length 8 [2021-10-07 15:33:21,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:33:21,597 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 1220 transitions. [2021-10-07 15:33:21,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:21,598 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 1220 transitions. [2021-10-07 15:33:21,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 15:33:21,598 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:21,598 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2021-10-07 15:33:21,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-07 15:33:21,812 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 [2021-10-07 15:33:21,812 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:33:21,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:21,812 INFO L82 PathProgramCache]: Analyzing trace with hash 368562651, now seen corresponding path program 1 times [2021-10-07 15:33:21,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:21,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797680056] [2021-10-07 15:33:21,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:33:21,813 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:21,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:21,815 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) [2021-10-07 15:33:21,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-07 15:33:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:33:22,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:33:22,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:22,256 INFO L354 Elim1Store]: treesize reduction 241, result has 18.6 percent of original size [2021-10-07 15:33:22,257 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 5 case distinctions, treesize of input 42 treesize of output 80 [2021-10-07 15:33:22,262 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 83 treesize of output 81 [2021-10-07 15:33:23,253 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:23,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:23,384 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:23,385 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:23,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [797680056] [2021-10-07 15:33:23,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [797680056] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:33:23,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:33:23,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:33:23,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616318887] [2021-10-07 15:33:23,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:33:23,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:23,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:33:23,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:33:23,387 INFO L87 Difference]: Start difference. First operand 356 states and 1220 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) [2021-10-07 15:33:23,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:33:23,529 INFO L93 Difference]: Finished difference Result 328 states and 1132 transitions. [2021-10-07 15:33:23,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:33:23,530 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 9 [2021-10-07 15:33:23,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:23,534 INFO L225 Difference]: With dead ends: 328 [2021-10-07 15:33:23,535 INFO L226 Difference]: Without dead ends: 328 [2021-10-07 15:33:23,535 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 80.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:33:23,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-10-07 15:33:23,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2021-10-07 15:33:23,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 314 states have (on average 3.605095541401274) internal successors, (1132), 327 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:23,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 1132 transitions. [2021-10-07 15:33:23,547 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 1132 transitions. Word has length 9 [2021-10-07 15:33:23,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:33:23,548 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 1132 transitions. [2021-10-07 15:33:23,548 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) [2021-10-07 15:33:23,548 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 1132 transitions. [2021-10-07 15:33:23,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 15:33:23,548 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:23,549 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2021-10-07 15:33:23,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-07 15:33:23,761 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 [2021-10-07 15:33:23,762 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:33:23,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:23,763 INFO L82 PathProgramCache]: Analyzing trace with hash 368562653, now seen corresponding path program 1 times [2021-10-07 15:33:23,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:23,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508215983] [2021-10-07 15:33:23,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:33:23,765 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:23,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:23,766 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) [2021-10-07 15:33:23,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-07 15:33:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:33:23,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:33:23,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:24,023 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 15:33:24,023 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 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-07 15:33:24,067 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:24,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:24,099 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:24,100 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:24,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508215983] [2021-10-07 15:33:24,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508215983] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:33:24,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:33:24,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:33:24,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932517377] [2021-10-07 15:33:24,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:33:24,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:24,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:33:24,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:33:24,102 INFO L87 Difference]: Start difference. First operand 328 states and 1132 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:24,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:33:24,158 INFO L93 Difference]: Finished difference Result 300 states and 1044 transitions. [2021-10-07 15:33:24,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:33:24,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-07 15:33:24,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:24,161 INFO L225 Difference]: With dead ends: 300 [2021-10-07 15:33:24,161 INFO L226 Difference]: Without dead ends: 300 [2021-10-07 15:33:24,161 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:33:24,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-10-07 15:33:24,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2021-10-07 15:33:24,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 292 states have (on average 3.5753424657534247) internal successors, (1044), 299 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:24,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 1044 transitions. [2021-10-07 15:33:24,172 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 1044 transitions. Word has length 9 [2021-10-07 15:33:24,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:33:24,172 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 1044 transitions. [2021-10-07 15:33:24,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:24,172 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 1044 transitions. [2021-10-07 15:33:24,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 15:33:24,173 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:24,173 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:33:24,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-10-07 15:33:24,385 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 [2021-10-07 15:33:24,386 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:33:24,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:24,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1459464420, now seen corresponding path program 1 times [2021-10-07 15:33:24,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:24,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115611527] [2021-10-07 15:33:24,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:33:24,389 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:24,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:24,390 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) [2021-10-07 15:33:24,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-07 15:33:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:33:24,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:33:24,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:24,749 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-07 15:33:24,750 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 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-07 15:33:24,897 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:24,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:25,229 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:25,229 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:25,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115611527] [2021-10-07 15:33:25,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115611527] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:33:25,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:33:25,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-07 15:33:25,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999328479] [2021-10-07 15:33:25,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:33:25,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:25,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:33:25,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:33:25,232 INFO L87 Difference]: Start difference. First operand 300 states and 1044 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) [2021-10-07 15:33:25,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:33:25,581 INFO L93 Difference]: Finished difference Result 592 states and 2072 transitions. [2021-10-07 15:33:25,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:33:25,582 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 10 [2021-10-07 15:33:25,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:25,588 INFO L225 Difference]: With dead ends: 592 [2021-10-07 15:33:25,588 INFO L226 Difference]: Without dead ends: 592 [2021-10-07 15:33:25,588 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 280.4ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:33:25,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-10-07 15:33:25,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 436. [2021-10-07 15:33:25,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 428 states have (on average 3.9158878504672896) internal successors, (1676), 435 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:25,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1676 transitions. [2021-10-07 15:33:25,606 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1676 transitions. Word has length 10 [2021-10-07 15:33:25,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:33:25,607 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 1676 transitions. [2021-10-07 15:33:25,607 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) [2021-10-07 15:33:25,607 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1676 transitions. [2021-10-07 15:33:25,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 15:33:25,608 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:25,608 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2021-10-07 15:33:25,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-10-07 15:33:25,819 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 [2021-10-07 15:33:25,820 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:33:25,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:25,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1465588642, now seen corresponding path program 1 times [2021-10-07 15:33:25,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:25,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555858268] [2021-10-07 15:33:25,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:33:25,822 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:25,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:25,823 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) [2021-10-07 15:33:25,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-07 15:33:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:33:25,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:33:25,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:26,207 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-07 15:33:26,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-07 15:33:26,371 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:26,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:27,075 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:27,075 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:27,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555858268] [2021-10-07 15:33:27,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555858268] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:33:27,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:33:27,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:33:27,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008668948] [2021-10-07 15:33:27,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:33:27,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:27,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:33:27,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:33:27,078 INFO L87 Difference]: Start difference. First operand 436 states and 1676 transitions. Second operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 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) [2021-10-07 15:33:27,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:33:27,790 INFO L93 Difference]: Finished difference Result 858 states and 2998 transitions. [2021-10-07 15:33:27,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:33:27,792 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 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 10 [2021-10-07 15:33:27,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:27,800 INFO L225 Difference]: With dead ends: 858 [2021-10-07 15:33:27,800 INFO L226 Difference]: Without dead ends: 858 [2021-10-07 15:33:27,800 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 677.1ms TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:33:27,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2021-10-07 15:33:27,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 498. [2021-10-07 15:33:27,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 490 states have (on average 4.012244897959183) internal successors, (1966), 497 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:27,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1966 transitions. [2021-10-07 15:33:27,821 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1966 transitions. Word has length 10 [2021-10-07 15:33:27,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:33:27,821 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 1966 transitions. [2021-10-07 15:33:27,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 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) [2021-10-07 15:33:27,822 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1966 transitions. [2021-10-07 15:33:27,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 15:33:27,823 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:27,823 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2021-10-07 15:33:27,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-07 15:33:28,037 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 [2021-10-07 15:33:28,038 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:33:28,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:28,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1811393452, now seen corresponding path program 2 times [2021-10-07 15:33:28,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:28,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481420012] [2021-10-07 15:33:28,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:33:28,041 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:28,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:28,042 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) [2021-10-07 15:33:28,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-07 15:33:28,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:33:28,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:33:28,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 15:33:28,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:28,497 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-07 15:33:28,497 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 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-07 15:33:28,700 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:28,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:29,199 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:29,200 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:29,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481420012] [2021-10-07 15:33:29,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481420012] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:33:29,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:33:29,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2021-10-07 15:33:29,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83659846] [2021-10-07 15:33:29,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:33:29,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:29,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:33:29,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:33:29,203 INFO L87 Difference]: Start difference. First operand 498 states and 1966 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 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) [2021-10-07 15:33:29,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:33:29,997 INFO L93 Difference]: Finished difference Result 796 states and 2708 transitions. [2021-10-07 15:33:29,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:33:29,999 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 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 11 [2021-10-07 15:33:29,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:30,006 INFO L225 Difference]: With dead ends: 796 [2021-10-07 15:33:30,006 INFO L226 Difference]: Without dead ends: 796 [2021-10-07 15:33:30,007 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 525.8ms TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:33:30,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2021-10-07 15:33:30,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 436. [2021-10-07 15:33:30,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 432 states have (on average 3.8796296296296298) internal successors, (1676), 435 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:30,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1676 transitions. [2021-10-07 15:33:30,029 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1676 transitions. Word has length 11 [2021-10-07 15:33:30,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:33:30,030 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 1676 transitions. [2021-10-07 15:33:30,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 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) [2021-10-07 15:33:30,030 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1676 transitions. [2021-10-07 15:33:30,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 15:33:30,031 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:30,031 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:33:30,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-07 15:33:30,246 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 [2021-10-07 15:33:30,247 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:33:30,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:30,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1914484294, now seen corresponding path program 1 times [2021-10-07 15:33:30,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:30,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1703484131] [2021-10-07 15:33:30,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:33:30,249 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:30,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:30,251 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) [2021-10-07 15:33:30,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-07 15:33:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:33:30,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:33:30,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:30,636 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-07 15:33:30,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-07 15:33:30,788 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:30,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:31,101 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:31,101 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:31,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1703484131] [2021-10-07 15:33:31,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1703484131] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:33:31,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:33:31,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-07 15:33:31,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799017505] [2021-10-07 15:33:31,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:33:31,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:31,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:33:31,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:33:31,107 INFO L87 Difference]: Start difference. First operand 436 states and 1676 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) [2021-10-07 15:33:31,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:33:31,481 INFO L93 Difference]: Finished difference Result 784 states and 3056 transitions. [2021-10-07 15:33:31,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:33:31,483 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 12 [2021-10-07 15:33:31,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:31,495 INFO L225 Difference]: With dead ends: 784 [2021-10-07 15:33:31,495 INFO L226 Difference]: Without dead ends: 784 [2021-10-07 15:33:31,496 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 265.6ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:33:31,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2021-10-07 15:33:31,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 608. [2021-10-07 15:33:31,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 604 states have (on average 4.198675496688741) internal successors, (2536), 607 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:31,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 2536 transitions. [2021-10-07 15:33:31,520 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 2536 transitions. Word has length 12 [2021-10-07 15:33:31,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:33:31,520 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 2536 transitions. [2021-10-07 15:33:31,521 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) [2021-10-07 15:33:31,521 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 2536 transitions. [2021-10-07 15:33:31,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 15:33:31,525 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:31,526 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:33:31,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-07 15:33:31,738 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 [2021-10-07 15:33:31,739 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:33:31,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:31,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1909029884, now seen corresponding path program 1 times [2021-10-07 15:33:31,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:31,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455554284] [2021-10-07 15:33:31,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:33:31,741 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:31,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:31,743 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) [2021-10-07 15:33:31,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-07 15:33:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:33:31,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:33:31,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:32,167 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-07 15:33:32,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-07 15:33:32,354 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:32,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:32,940 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:32,940 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:32,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455554284] [2021-10-07 15:33:32,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455554284] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:33:32,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:33:32,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:33:32,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801970481] [2021-10-07 15:33:32,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:33:32,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:32,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:33:32,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:33:32,943 INFO L87 Difference]: Start difference. First operand 608 states and 2536 transitions. Second operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 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) [2021-10-07 15:33:33,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:33:33,567 INFO L93 Difference]: Finished difference Result 1034 states and 3954 transitions. [2021-10-07 15:33:33,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:33:33,568 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 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 12 [2021-10-07 15:33:33,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:33,577 INFO L225 Difference]: With dead ends: 1034 [2021-10-07 15:33:33,577 INFO L226 Difference]: Without dead ends: 1034 [2021-10-07 15:33:33,578 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 552.6ms TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:33:33,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2021-10-07 15:33:33,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 704. [2021-10-07 15:33:33,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 700 states have (on average 4.3028571428571425) internal successors, (3012), 703 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:33,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 3012 transitions. [2021-10-07 15:33:33,608 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 3012 transitions. Word has length 12 [2021-10-07 15:33:33,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:33:33,609 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 3012 transitions. [2021-10-07 15:33:33,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 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) [2021-10-07 15:33:33,609 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 3012 transitions. [2021-10-07 15:33:33,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:33:33,610 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:33,610 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:33:33,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-07 15:33:33,823 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 [2021-10-07 15:33:33,824 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:33:33,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:33,825 INFO L82 PathProgramCache]: Analyzing trace with hash -949614749, now seen corresponding path program 2 times [2021-10-07 15:33:33,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:33,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130588899] [2021-10-07 15:33:33,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:33:33,827 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:33,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:33,828 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) [2021-10-07 15:33:33,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-07 15:33:34,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:33:34,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:33:34,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:33:34,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:34,104 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:34,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:34,187 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:34,188 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:34,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130588899] [2021-10-07 15:33:34,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130588899] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:33:34,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:33:34,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 15:33:34,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613613506] [2021-10-07 15:33:34,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:33:34,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:34,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:33:34,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:33:34,190 INFO L87 Difference]: Start difference. First operand 704 states and 3012 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 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) [2021-10-07 15:33:34,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:33:34,311 INFO L93 Difference]: Finished difference Result 938 states and 3478 transitions. [2021-10-07 15:33:34,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:33:34,312 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 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 13 [2021-10-07 15:33:34,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:34,318 INFO L225 Difference]: With dead ends: 938 [2021-10-07 15:33:34,318 INFO L226 Difference]: Without dead ends: 938 [2021-10-07 15:33:34,319 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.0ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:33:34,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2021-10-07 15:33:34,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 608. [2021-10-07 15:33:34,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 606 states have (on average 4.184818481848184) internal successors, (2536), 607 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:34,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 2536 transitions. [2021-10-07 15:33:34,346 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 2536 transitions. Word has length 13 [2021-10-07 15:33:34,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:33:34,346 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 2536 transitions. [2021-10-07 15:33:34,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 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) [2021-10-07 15:33:34,347 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 2536 transitions. [2021-10-07 15:33:34,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:33:34,347 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:34,348 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:33:34,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-07 15:33:34,561 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 [2021-10-07 15:33:34,561 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:33:34,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:34,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1573439238, now seen corresponding path program 1 times [2021-10-07 15:33:34,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:34,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186245393] [2021-10-07 15:33:34,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:33:34,562 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:34,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:34,564 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) [2021-10-07 15:33:34,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-07 15:33:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:33:34,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:33:34,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:35,005 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-07 15:33:35,005 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 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-07 15:33:35,204 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:35,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:35,760 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:35,760 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:35,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [186245393] [2021-10-07 15:33:35,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [186245393] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:33:35,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:33:35,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:33:35,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539924105] [2021-10-07 15:33:35,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:33:35,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:35,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:33:35,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:33:35,763 INFO L87 Difference]: Start difference. First operand 608 states and 2536 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) [2021-10-07 15:33:36,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:33:36,212 INFO L93 Difference]: Finished difference Result 958 states and 3746 transitions. [2021-10-07 15:33:36,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:33:36,213 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 14 [2021-10-07 15:33:36,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:36,218 INFO L225 Difference]: With dead ends: 958 [2021-10-07 15:33:36,218 INFO L226 Difference]: Without dead ends: 958 [2021-10-07 15:33:36,218 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 506.8ms TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:33:36,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2021-10-07 15:33:36,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 694. [2021-10-07 15:33:36,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 692 states have (on average 4.286127167630058) internal successors, (2966), 693 states have internal predecessors, (2966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:36,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 2966 transitions. [2021-10-07 15:33:36,247 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 2966 transitions. Word has length 14 [2021-10-07 15:33:36,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:33:36,248 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 2966 transitions. [2021-10-07 15:33:36,248 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) [2021-10-07 15:33:36,248 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 2966 transitions. [2021-10-07 15:33:36,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 15:33:36,249 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:36,249 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:33:36,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-07 15:33:36,462 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 [2021-10-07 15:33:36,462 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:33:36,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:36,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1531977228, now seen corresponding path program 2 times [2021-10-07 15:33:36,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:36,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1383232762] [2021-10-07 15:33:36,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:33:36,466 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:36,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:36,467 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) [2021-10-07 15:33:36,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-07 15:33:36,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:33:36,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:33:36,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 15:33:36,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:37,001 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-07 15:33:37,002 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 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-07 15:33:37,223 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:37,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:37,706 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:37,707 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:37,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1383232762] [2021-10-07 15:33:37,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1383232762] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:33:37,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:33:37,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2021-10-07 15:33:37,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440987920] [2021-10-07 15:33:37,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:33:37,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:37,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:33:37,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:33:37,710 INFO L87 Difference]: Start difference. First operand 694 states and 2966 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:38,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:33:38,267 INFO L93 Difference]: Finished difference Result 872 states and 3316 transitions. [2021-10-07 15:33:38,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:33:38,268 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-07 15:33:38,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:38,272 INFO L225 Difference]: With dead ends: 872 [2021-10-07 15:33:38,272 INFO L226 Difference]: Without dead ends: 872 [2021-10-07 15:33:38,272 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 494.2ms TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:33:38,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-10-07 15:33:38,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 608. [2021-10-07 15:33:38,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 607 states have (on average 4.177924217462932) internal successors, (2536), 607 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:38,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 2536 transitions. [2021-10-07 15:33:38,297 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 2536 transitions. Word has length 15 [2021-10-07 15:33:38,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:33:38,297 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 2536 transitions. [2021-10-07 15:33:38,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:38,298 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 2536 transitions. [2021-10-07 15:33:38,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:33:38,301 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:38,301 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:33:38,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-07 15:33:38,514 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 [2021-10-07 15:33:38,515 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:33:38,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:38,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1102637301, now seen corresponding path program 1 times [2021-10-07 15:33:38,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:38,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1882287490] [2021-10-07 15:33:38,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:33:38,518 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:38,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:38,519 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) [2021-10-07 15:33:38,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-07 15:33:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:33:38,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:33:38,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:38,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:38,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:39,034 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:39,034 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:39,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1882287490] [2021-10-07 15:33:39,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1882287490] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:33:39,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:33:39,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-07 15:33:39,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571692916] [2021-10-07 15:33:39,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:33:39,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:39,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:33:39,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:33:39,037 INFO L87 Difference]: Start difference. First operand 608 states and 2536 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:39,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:33:39,259 INFO L93 Difference]: Finished difference Result 717 states and 2849 transitions. [2021-10-07 15:33:39,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:33:39,260 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 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 [2021-10-07 15:33:39,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:39,263 INFO L225 Difference]: With dead ends: 717 [2021-10-07 15:33:39,263 INFO L226 Difference]: Without dead ends: 608 [2021-10-07 15:33:39,263 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 128.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:33:39,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-10-07 15:33:39,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2021-10-07 15:33:39,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 607 states have (on average 4.019769357495881) internal successors, (2440), 607 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:39,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 2440 transitions. [2021-10-07 15:33:39,282 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 2440 transitions. Word has length 23 [2021-10-07 15:33:39,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:33:39,282 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 2440 transitions. [2021-10-07 15:33:39,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:39,282 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 2440 transitions. [2021-10-07 15:33:39,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:33:39,285 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:39,286 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:33:39,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-07 15:33:39,489 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 [2021-10-07 15:33:39,489 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:33:39,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:39,490 INFO L82 PathProgramCache]: Analyzing trace with hash -177547800, now seen corresponding path program 1 times [2021-10-07 15:33:39,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:39,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537826778] [2021-10-07 15:33:39,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:33:39,492 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:39,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:39,493 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) [2021-10-07 15:33:39,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-07 15:33:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:33:39,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:33:39,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:39,943 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:39,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:40,086 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:40,087 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:40,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537826778] [2021-10-07 15:33:40,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1537826778] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:33:40,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:33:40,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2021-10-07 15:33:40,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027384323] [2021-10-07 15:33:40,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:33:40,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:40,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:33:40,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:33:40,089 INFO L87 Difference]: Start difference. First operand 608 states and 2440 transitions. Second operand has 7 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) [2021-10-07 15:33:40,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:33:40,494 INFO L93 Difference]: Finished difference Result 778 states and 2916 transitions. [2021-10-07 15:33:40,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:33:40,496 INFO L78 Accepts]: Start accepts. Automaton has has 7 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 24 [2021-10-07 15:33:40,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:40,500 INFO L225 Difference]: With dead ends: 778 [2021-10-07 15:33:40,500 INFO L226 Difference]: Without dead ends: 778 [2021-10-07 15:33:40,501 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 166.4ms TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:33:40,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2021-10-07 15:33:40,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 628. [2021-10-07 15:33:40,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 627 states have (on average 3.9776714513556617) internal successors, (2494), 627 states have internal predecessors, (2494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:40,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 2494 transitions. [2021-10-07 15:33:40,537 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 2494 transitions. Word has length 24 [2021-10-07 15:33:40,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:33:40,537 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 2494 transitions. [2021-10-07 15:33:40,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 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) [2021-10-07 15:33:40,538 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 2494 transitions. [2021-10-07 15:33:40,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:33:40,542 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:40,542 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:33:40,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-07 15:33:40,755 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 [2021-10-07 15:33:40,756 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:33:40,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:40,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1491252776, now seen corresponding path program 2 times [2021-10-07 15:33:40,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:40,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1055728061] [2021-10-07 15:33:40,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:33:40,758 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:40,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:40,760 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) [2021-10-07 15:33:40,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-07 15:33:40,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:33:40,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:33:40,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:33:40,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:41,118 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-07 15:33:41,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:41,291 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-07 15:33:41,292 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:41,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1055728061] [2021-10-07 15:33:41,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1055728061] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:33:41,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:33:41,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-07 15:33:41,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911283655] [2021-10-07 15:33:41,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:33:41,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:41,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:33:41,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:33:41,294 INFO L87 Difference]: Start difference. First operand 628 states and 2494 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:41,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:33:41,530 INFO L93 Difference]: Finished difference Result 799 states and 3019 transitions. [2021-10-07 15:33:41,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:33:41,530 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-07 15:33:41,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:41,534 INFO L225 Difference]: With dead ends: 799 [2021-10-07 15:33:41,534 INFO L226 Difference]: Without dead ends: 628 [2021-10-07 15:33:41,535 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 129.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:33:41,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-10-07 15:33:41,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 608. [2021-10-07 15:33:41,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 607 states have (on average 3.8780889621087313) internal successors, (2354), 607 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:41,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 2354 transitions. [2021-10-07 15:33:41,558 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 2354 transitions. Word has length 24 [2021-10-07 15:33:41,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:33:41,558 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 2354 transitions. [2021-10-07 15:33:41,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:41,559 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 2354 transitions. [2021-10-07 15:33:41,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:33:41,562 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:41,562 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:33:41,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-07 15:33:41,775 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 [2021-10-07 15:33:41,776 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:33:41,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:41,776 INFO L82 PathProgramCache]: Analyzing trace with hash -215223846, now seen corresponding path program 1 times [2021-10-07 15:33:41,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:41,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090403795] [2021-10-07 15:33:41,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:33:41,778 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:41,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:41,779 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) [2021-10-07 15:33:41,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-07 15:33:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:33:42,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-07 15:33:42,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:42,589 INFO L354 Elim1Store]: treesize reduction 394, result has 3.2 percent of original size [2021-10-07 15:33:42,590 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 354 treesize of output 128 [2021-10-07 15:33:43,273 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:43,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:44,561 INFO L354 Elim1Store]: treesize reduction 359, result has 10.3 percent of original size [2021-10-07 15:33:44,562 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 266 treesize of output 144 [2021-10-07 15:33:50,224 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:33:50,224 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:50,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090403795] [2021-10-07 15:33:50,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090403795] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:33:50,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:33:50,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-07 15:33:50,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39530922] [2021-10-07 15:33:50,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 15:33:50,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:50,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 15:33:50,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:33:50,227 INFO L87 Difference]: Start difference. First operand 608 states and 2354 transitions. Second operand has 17 states, 16 states have (on average 2.3125) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:34:17,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:34:17,273 INFO L93 Difference]: Finished difference Result 825 states and 2985 transitions. [2021-10-07 15:34:17,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:34:17,274 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.3125) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 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 [2021-10-07 15:34:17,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:34:17,277 INFO L225 Difference]: With dead ends: 825 [2021-10-07 15:34:17,277 INFO L226 Difference]: Without dead ends: 818 [2021-10-07 15:34:17,278 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 20662.7ms TimeCoverageRelationStatistics Valid=281, Invalid=909, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 15:34:17,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2021-10-07 15:34:17,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 628. [2021-10-07 15:34:17,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 627 states have (on average 3.8325358851674642) internal successors, (2403), 627 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:34:17,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 2403 transitions. [2021-10-07 15:34:17,326 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 2403 transitions. Word has length 25 [2021-10-07 15:34:17,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:34:17,326 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 2403 transitions. [2021-10-07 15:34:17,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.3125) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:34:17,326 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 2403 transitions. [2021-10-07 15:34:17,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:34:17,329 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:34:17,329 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:34:17,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-07 15:34:17,530 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 [2021-10-07 15:34:17,530 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:34:17,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:34:17,531 INFO L82 PathProgramCache]: Analyzing trace with hash -394273142, now seen corresponding path program 2 times [2021-10-07 15:34:17,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:34:17,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255913090] [2021-10-07 15:34:17,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:34:17,533 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:34:17,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:34:17,534 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) [2021-10-07 15:34:17,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-07 15:34:17,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:34:17,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:34:17,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-07 15:34:17,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:34:19,116 INFO L354 Elim1Store]: treesize reduction 394, result has 3.2 percent of original size [2021-10-07 15:34:19,117 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 424 treesize of output 154 [2021-10-07 15:34:20,023 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:34:20,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:34:21,240 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-10-07 15:34:21,241 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 439 treesize of output 207 [2021-10-07 15:34:40,459 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:34:40,460 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:34:40,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255913090] [2021-10-07 15:34:40,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255913090] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:34:40,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:34:40,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 15:34:40,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081473768] [2021-10-07 15:34:40,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 15:34:40,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:34:40,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 15:34:40,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=248, Unknown=1, NotChecked=0, Total=306 [2021-10-07 15:34:40,462 INFO L87 Difference]: Start difference. First operand 628 states and 2403 transitions. Second operand has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:34:59,317 WARN L207 SmtUtils]: Spent 12.24 s on a formula simplification that was a NOOP. DAG size: 99 [2021-10-07 15:35:28,639 WARN L207 SmtUtils]: Spent 16.54 s on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2021-10-07 15:35:43,673 WARN L207 SmtUtils]: Spent 12.27 s on a formula simplification that was a NOOP. DAG size: 109 [2021-10-07 15:36:07,293 WARN L207 SmtUtils]: Spent 18.54 s on a formula simplification. DAG size of input: 109 DAG size of output: 103 [2021-10-07 15:36:45,576 WARN L207 SmtUtils]: Spent 32.47 s on a formula simplification. DAG size of input: 159 DAG size of output: 122 [2021-10-07 15:36:51,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:36:51,849 INFO L93 Difference]: Finished difference Result 1173 states and 3873 transitions. [2021-10-07 15:36:51,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-07 15:36:51,851 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 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 [2021-10-07 15:36:51,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:36:51,857 INFO L225 Difference]: With dead ends: 1173 [2021-10-07 15:36:51,857 INFO L226 Difference]: Without dead ends: 1159 [2021-10-07 15:36:51,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 115253.7ms TimeCoverageRelationStatistics Valid=425, Invalid=1466, Unknown=1, NotChecked=0, Total=1892 [2021-10-07 15:36:51,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2021-10-07 15:36:51,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 638. [2021-10-07 15:36:51,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 637 states have (on average 3.8131868131868134) internal successors, (2429), 637 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:36:51,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 2429 transitions. [2021-10-07 15:36:51,887 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 2429 transitions. Word has length 25 [2021-10-07 15:36:51,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:36:51,889 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 2429 transitions. [2021-10-07 15:36:51,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:36:51,890 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 2429 transitions. [2021-10-07 15:36:51,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:36:51,894 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:36:51,894 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:36:51,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-10-07 15:36:52,107 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 [2021-10-07 15:36:52,107 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:36:52,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:36:52,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1046362146, now seen corresponding path program 3 times [2021-10-07 15:36:52,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:36:52,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924421205] [2021-10-07 15:36:52,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:36:52,109 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:36:52,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:36:52,111 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) [2021-10-07 15:36:52,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-07 15:36:52,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:36:52,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:36:52,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-07 15:36:52,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:36:53,196 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-10-07 15:36:53,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 424 treesize of output 182 [2021-10-07 15:36:54,854 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:36:54,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:36:56,056 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-10-07 15:36:56,056 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 439 treesize of output 207 [2021-10-07 15:37:14,708 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:37:14,708 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:37:14,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [924421205] [2021-10-07 15:37:14,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [924421205] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:37:14,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:37:14,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 15:37:14,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330323005] [2021-10-07 15:37:14,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 15:37:14,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:37:14,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 15:37:14,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=245, Unknown=1, NotChecked=0, Total=306 [2021-10-07 15:37:14,710 INFO L87 Difference]: Start difference. First operand 638 states and 2429 transitions. Second operand has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:37:34,672 WARN L207 SmtUtils]: Spent 12.41 s on a formula simplification that was a NOOP. DAG size: 99 [2021-10-07 15:38:02,175 WARN L207 SmtUtils]: Spent 12.29 s on a formula simplification that was a NOOP. DAG size: 109 [2021-10-07 15:38:23,743 WARN L207 SmtUtils]: Spent 19.33 s on a formula simplification. DAG size of input: 109 DAG size of output: 103 [2021-10-07 15:38:44,858 WARN L207 SmtUtils]: Spent 20.41 s on a formula simplification. DAG size of input: 170 DAG size of output: 120 [2021-10-07 15:38:59,056 WARN L207 SmtUtils]: Spent 12.93 s on a formula simplification. DAG size of input: 131 DAG size of output: 123 [2021-10-07 15:39:20,765 WARN L207 SmtUtils]: Spent 19.14 s on a formula simplification. DAG size of input: 118 DAG size of output: 112 [2021-10-07 15:39:26,383 WARN L207 SmtUtils]: Spent 5.28 s on a formula simplification. DAG size of input: 133 DAG size of output: 125 [2021-10-07 15:39:32,283 WARN L207 SmtUtils]: Spent 5.13 s on a formula simplification. DAG size of input: 132 DAG size of output: 124 [2021-10-07 15:39:34,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:39:34,268 INFO L93 Difference]: Finished difference Result 1409 states and 4444 transitions. [2021-10-07 15:39:34,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-07 15:39:34,270 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 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 [2021-10-07 15:39:34,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:39:34,276 INFO L225 Difference]: With dead ends: 1409 [2021-10-07 15:39:34,276 INFO L226 Difference]: Without dead ends: 1395 [2021-10-07 15:39:34,277 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 754 ImplicationChecksByTransitivity, 129300.3ms TimeCoverageRelationStatistics Valid=624, Invalid=2345, Unknown=1, NotChecked=0, Total=2970 [2021-10-07 15:39:34,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2021-10-07 15:39:34,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 642. [2021-10-07 15:39:34,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 3.8174726989079564) internal successors, (2447), 641 states have internal predecessors, (2447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:39:34,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 2447 transitions. [2021-10-07 15:39:34,310 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 2447 transitions. Word has length 25 [2021-10-07 15:39:34,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:39:34,311 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 2447 transitions. [2021-10-07 15:39:34,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:39:34,311 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 2447 transitions. [2021-10-07 15:39:34,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:39:34,314 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:39:34,314 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:39:34,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-10-07 15:39:34,529 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 [2021-10-07 15:39:34,529 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:39:34,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:39:34,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1567498486, now seen corresponding path program 4 times [2021-10-07 15:39:34,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:39:34,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1520118741] [2021-10-07 15:39:34,531 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:39:34,531 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:39:34,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:39:34,533 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) [2021-10-07 15:39:34,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-07 15:39:34,922 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:39:34,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:39:34,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-07 15:39:34,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:39:35,540 INFO L354 Elim1Store]: treesize reduction 394, result has 3.2 percent of original size [2021-10-07 15:39:35,540 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 354 treesize of output 128 [2021-10-07 15:39:35,935 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:39:35,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:39:37,322 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-10-07 15:39:37,322 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 344 treesize of output 182 [2021-10-07 15:39:56,582 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:39:56,582 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:39:56,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1520118741] [2021-10-07 15:39:56,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1520118741] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:39:56,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:39:56,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-07 15:39:56,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760472299] [2021-10-07 15:39:56,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 15:39:56,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:39:56,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 15:39:56,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:39:56,584 INFO L87 Difference]: Start difference. First operand 642 states and 2447 transitions. Second operand has 17 states, 16 states have (on average 2.3125) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:40:23,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:40:23,251 INFO L93 Difference]: Finished difference Result 999 states and 3438 transitions. [2021-10-07 15:40:23,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 15:40:23,252 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.3125) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 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 [2021-10-07 15:40:23,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:40:23,257 INFO L225 Difference]: With dead ends: 999 [2021-10-07 15:40:23,257 INFO L226 Difference]: Without dead ends: 992 [2021-10-07 15:40:23,258 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 15259.3ms TimeCoverageRelationStatistics Valid=283, Invalid=1049, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 15:40:23,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2021-10-07 15:40:23,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 644. [2021-10-07 15:40:23,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 643 states have (on average 3.8164852255054433) internal successors, (2454), 643 states have internal predecessors, (2454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:40:23,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 2454 transitions. [2021-10-07 15:40:23,284 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 2454 transitions. Word has length 25 [2021-10-07 15:40:23,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:40:23,284 INFO L470 AbstractCegarLoop]: Abstraction has 644 states and 2454 transitions. [2021-10-07 15:40:23,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.3125) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:40:23,284 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 2454 transitions. [2021-10-07 15:40:23,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:40:23,287 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:40:23,287 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:40:23,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-07 15:40:23,501 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 [2021-10-07 15:40:23,501 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:40:23,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:40:23,502 INFO L82 PathProgramCache]: Analyzing trace with hash 548824156, now seen corresponding path program 5 times [2021-10-07 15:40:23,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:40:23,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70113575] [2021-10-07 15:40:23,503 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:40:23,503 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:40:23,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:40:23,505 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:40:23,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-07 15:40:23,966 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:40:23,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:40:23,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-07 15:40:23,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:40:24,424 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-07 15:40:24,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 228 treesize of output 116 [2021-10-07 15:40:25,301 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:40:25,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:40:26,430 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-10-07 15:40:26,431 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 332 treesize of output 170 [2021-10-07 15:40:38,296 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:40:38,297 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:40:38,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70113575] [2021-10-07 15:40:38,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70113575] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:40:38,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:40:38,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 19 [2021-10-07 15:40:38,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089097435] [2021-10-07 15:40:38,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 15:40:38,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:40:38,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 15:40:38,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:40:38,300 INFO L87 Difference]: Start difference. First operand 644 states and 2454 transitions. Second operand has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:41:10,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:41:10,202 INFO L93 Difference]: Finished difference Result 963 states and 3316 transitions. [2021-10-07 15:41:10,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-07 15:41:10,203 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 15:41:10,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:41:10,207 INFO L225 Difference]: With dead ends: 963 [2021-10-07 15:41:10,207 INFO L226 Difference]: Without dead ends: 942 [2021-10-07 15:41:10,208 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 26323.9ms TimeCoverageRelationStatistics Valid=581, Invalid=1869, Unknown=0, NotChecked=0, Total=2450 [2021-10-07 15:41:10,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2021-10-07 15:41:10,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 658. [2021-10-07 15:41:10,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 657 states have (on average 3.7990867579908674) internal successors, (2496), 657 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:41:10,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2496 transitions. [2021-10-07 15:41:10,249 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2496 transitions. Word has length 25 [2021-10-07 15:41:10,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:41:10,249 INFO L470 AbstractCegarLoop]: Abstraction has 658 states and 2496 transitions. [2021-10-07 15:41:10,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:41:10,249 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2496 transitions. [2021-10-07 15:41:10,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:41:10,252 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:41:10,252 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:41:10,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-10-07 15:41:10,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:41:10,467 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:41:10,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:41:10,468 INFO L82 PathProgramCache]: Analyzing trace with hash -2031845598, now seen corresponding path program 6 times [2021-10-07 15:41:10,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:41:10,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281375848] [2021-10-07 15:41:10,469 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:41:10,470 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:41:10,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:41:10,471 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:41:10,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-07 15:41:10,970 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:41:10,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:41:10,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-07 15:41:10,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:41:12,093 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-10-07 15:41:12,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 340 treesize of output 142 [2021-10-07 15:41:12,957 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:41:12,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:41:14,217 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-10-07 15:41:14,217 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 439 treesize of output 207 [2021-10-07 15:41:31,295 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:41:31,296 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:41:31,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281375848] [2021-10-07 15:41:31,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281375848] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:41:31,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:41:31,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 15:41:31,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571404932] [2021-10-07 15:41:31,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 15:41:31,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:41:31,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 15:41:31,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=250, Unknown=1, NotChecked=0, Total=306 [2021-10-07 15:41:31,298 INFO L87 Difference]: Start difference. First operand 658 states and 2496 transitions. Second operand has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:11,053 WARN L207 SmtUtils]: Spent 13.04 s on a formula simplification. DAG size of input: 147 DAG size of output: 130 [2021-10-07 15:42:13,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:42:13,898 INFO L93 Difference]: Finished difference Result 1128 states and 3765 transitions. [2021-10-07 15:42:13,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:42:13,900 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 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 [2021-10-07 15:42:13,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:42:13,903 INFO L225 Difference]: With dead ends: 1128 [2021-10-07 15:42:13,903 INFO L226 Difference]: Without dead ends: 1114 [2021-10-07 15:42:13,904 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 27364.2ms TimeCoverageRelationStatistics Valid=344, Invalid=1215, Unknown=1, NotChecked=0, Total=1560 [2021-10-07 15:42:13,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2021-10-07 15:42:13,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 666. [2021-10-07 15:42:13,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 665 states have (on average 3.789473684210526) internal successors, (2520), 665 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:13,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 2520 transitions. [2021-10-07 15:42:13,928 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 2520 transitions. Word has length 25 [2021-10-07 15:42:13,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:42:13,928 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 2520 transitions. [2021-10-07 15:42:13,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:42:13,929 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 2520 transitions. [2021-10-07 15:42:13,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:42:13,931 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:42:13,931 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:42:13,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-07 15:42:14,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:42:14,148 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:42:14,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:42:14,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1611032694, now seen corresponding path program 7 times [2021-10-07 15:42:14,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:42:14,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1990296725] [2021-10-07 15:42:14,150 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:42:14,150 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:42:14,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:42:14,150 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:42:14,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-07 15:42:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:42:14,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-07 15:42:14,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:42:15,387 INFO L354 Elim1Store]: treesize reduction 492, result has 2.6 percent of original size [2021-10-07 15:42:15,387 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 460 treesize of output 148 [2021-10-07 15:42:16,661 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:42:16,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:42:17,886 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-10-07 15:42:17,887 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 451 treesize of output 219 [2021-10-07 15:42:35,008 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:42:35,009 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:42:35,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1990296725] [2021-10-07 15:42:35,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1990296725] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:42:35,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:42:35,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 15:42:35,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985757591] [2021-10-07 15:42:35,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 15:42:35,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:42:35,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 15:42:35,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=245, Unknown=1, NotChecked=0, Total=306 [2021-10-07 15:42:35,012 INFO L87 Difference]: Start difference. First operand 666 states and 2520 transitions. Second operand has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:43:01,357 WARN L207 SmtUtils]: Spent 20.48 s on a formula simplification. DAG size of input: 131 DAG size of output: 103 [2021-10-07 15:43:24,532 WARN L207 SmtUtils]: Spent 6.20 s on a formula simplification. DAG size of input: 126 DAG size of output: 98 [2021-10-07 15:43:34,840 WARN L207 SmtUtils]: Spent 8.22 s on a formula simplification. DAG size of input: 129 DAG size of output: 99 [2021-10-07 15:43:53,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:43:53,462 INFO L93 Difference]: Finished difference Result 1088 states and 3836 transitions. [2021-10-07 15:43:53,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:43:53,463 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 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 [2021-10-07 15:43:53,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:43:53,466 INFO L225 Difference]: With dead ends: 1088 [2021-10-07 15:43:53,466 INFO L226 Difference]: Without dead ends: 1081 [2021-10-07 15:43:53,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 53255.7ms TimeCoverageRelationStatistics Valid=267, Invalid=987, Unknown=6, NotChecked=0, Total=1260 [2021-10-07 15:43:53,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2021-10-07 15:43:53,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 666. [2021-10-07 15:43:53,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 665 states have (on average 3.789473684210526) internal successors, (2520), 665 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:43:53,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 2520 transitions. [2021-10-07 15:43:53,493 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 2520 transitions. Word has length 25 [2021-10-07 15:43:53,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:43:53,494 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 2520 transitions. [2021-10-07 15:43:53,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:43:53,494 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 2520 transitions. [2021-10-07 15:43:53,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:43:53,497 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:43:53,497 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:43:53,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-07 15:43:53,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:43:53,711 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-07 15:43:53,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:43:53,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1089896354, now seen corresponding path program 8 times [2021-10-07 15:43:53,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:43:53,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127663986] [2021-10-07 15:43:53,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:43:53,713 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:43:53,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:43:53,714 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:43:53,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-07 15:43:54,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:43:54,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:43:54,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-07 15:43:54,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:43:55,087 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-10-07 15:43:55,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 224 treesize of output 92 [2021-10-07 15:43:55,295 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:43:55,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:43:56,576 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-10-07 15:43:56,577 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 448 treesize of output 216 [2021-10-07 15:44:13,874 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:44:13,875 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:13,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127663986] [2021-10-07 15:44:13,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127663986] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:13,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:13,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-07 15:44:13,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519801099] [2021-10-07 15:44:13,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 15:44:13,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:13,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 15:44:13,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:44:13,877 INFO L87 Difference]: Start difference. First operand 666 states and 2520 transitions. Second operand has 17 states, 16 states have (on average 2.3125) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:53,476 WARN L207 SmtUtils]: Spent 39.18 s on a formula simplification. DAG size of input: 117 DAG size of output: 109 [2021-10-07 15:45:22,683 WARN L207 SmtUtils]: Spent 28.74 s on a formula simplification. DAG size of input: 116 DAG size of output: 87 [2021-10-07 15:46:07,147 WARN L207 SmtUtils]: Spent 39.36 s on a formula simplification. DAG size of input: 127 DAG size of output: 119 Received shutdown request... [2021-10-07 15:46:29,624 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 [2021-10-07 15:46:29,625 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 15:46:29,915 WARN L223 SmtUtils]: Removed 7 from assertion stack [2021-10-07 15:46:29,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:46:29,917 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:46:29,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-07 15:46:30,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:46:30,120 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (666states) and FLOYD_HOARE automaton (currently 15 states, 17 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 126 for 21373ms.. [2021-10-07 15:46:30,124 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-07 15:46:30,124 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-07 15:46:30,124 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-07 15:46:30,125 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-07 15:46:30,125 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-07 15:46:30,125 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-07 15:46:30,125 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 15:46:30,125 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 15:46:30,125 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 15:46:30,125 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 15:46:30,126 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 15:46:30,126 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 15:46:30,126 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 15:46:30,126 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 15:46:30,126 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-07 15:46:30,126 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-07 15:46:30,126 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-07 15:46:30,126 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-07 15:46:30,126 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-07 15:46:30,126 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-07 15:46:30,127 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:46:30,127 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 15:46:30,127 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 15:46:30,127 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-07 15:46:30,127 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-07 15:46:30,127 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-07 15:46:30,127 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-07 15:46:30,127 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-07 15:46:30,128 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-07 15:46:30,128 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-07 15:46:30,135 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 15:46:30,135 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 15:46:30,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 03:46:30 BasicIcfg [2021-10-07 15:46:30,137 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 15:46:30,138 INFO L168 Benchmark]: Toolchain (without parser) took 837881.07 ms. Allocated memory was 158.3 MB in the beginning and 219.2 MB in the end (delta: 60.8 MB). Free memory was 134.1 MB in the beginning and 92.9 MB in the end (delta: 41.2 MB). Peak memory consumption was 103.6 MB. Max. memory is 8.0 GB. [2021-10-07 15:46:30,138 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 158.3 MB. Free memory is still 128.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 15:46:30,139 INFO L168 Benchmark]: CACSL2BoogieTranslator took 473.52 ms. Allocated memory is still 158.3 MB. Free memory was 133.6 MB in the beginning and 118.3 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-10-07 15:46:30,139 INFO L168 Benchmark]: Boogie Procedure Inliner took 116.57 ms. Allocated memory is still 158.3 MB. Free memory was 118.3 MB in the beginning and 115.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:46:30,139 INFO L168 Benchmark]: Boogie Preprocessor took 84.89 ms. Allocated memory is still 158.3 MB. Free memory was 115.8 MB in the beginning and 113.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:46:30,140 INFO L168 Benchmark]: RCFGBuilder took 2335.26 ms. Allocated memory is still 158.3 MB. Free memory was 113.6 MB in the beginning and 83.6 MB in the end (delta: 30.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 8.0 GB. [2021-10-07 15:46:30,140 INFO L168 Benchmark]: TraceAbstraction took 834855.01 ms. Allocated memory was 158.3 MB in the beginning and 219.2 MB in the end (delta: 60.8 MB). Free memory was 83.1 MB in the beginning and 92.9 MB in the end (delta: -9.8 MB). Peak memory consumption was 51.6 MB. Max. memory is 8.0 GB. [2021-10-07 15:46:30,143 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 158.3 MB. Free memory is still 128.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 473.52 ms. Allocated memory is still 158.3 MB. Free memory was 133.6 MB in the beginning and 118.3 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 116.57 ms. Allocated memory is still 158.3 MB. Free memory was 118.3 MB in the beginning and 115.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 84.89 ms. Allocated memory is still 158.3 MB. Free memory was 115.8 MB in the beginning and 113.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2335.26 ms. Allocated memory is still 158.3 MB. Free memory was 113.6 MB in the beginning and 83.6 MB in the end (delta: 30.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 834855.01 ms. Allocated memory was 158.3 MB in the beginning and 219.2 MB in the end (delta: 60.8 MB). Free memory was 83.1 MB in the beginning and 92.9 MB in the end (delta: -9.8 MB). Peak memory consumption was 51.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 26984.9ms, 190 PlacesBefore, 55 PlacesAfterwards, 191 TransitionsBefore, 49 TransitionsAfterwards, 2160 CoEnabledTransitionPairs, 8 FixpointIterations, 118 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 13 TrivialYvCompositions, 8 ConcurrentYvCompositions, 7 ChoiceCompositions, 198 TotalNumberOfCompositions, 2889 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2737, positive: 2703, positive conditional: 0, positive unconditional: 2703, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1303, positive: 1296, positive conditional: 0, positive unconditional: 1296, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1303, positive: 1296, positive conditional: 0, positive unconditional: 1296, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 7, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 769, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 769, negative conditional: 0, negative unconditional: 769, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2737, positive: 1407, positive conditional: 0, positive unconditional: 1407, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 1303, unknown conditional: 0, unknown unconditional: 1303] , Statistics on independence cache: Total cache size (in pairs): 114, Positive cache size: 112, Positive conditional cache size: 0, Positive unconditional cache size: 112, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - 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: 159]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (666states) and FLOYD_HOARE automaton (currently 15 states, 17 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 126 for 21373ms.. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (666states) and FLOYD_HOARE automaton (currently 15 states, 17 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 126 for 21373ms.. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (666states) and FLOYD_HOARE automaton (currently 15 states, 17 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 126 for 21373ms.. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (666states) and FLOYD_HOARE automaton (currently 15 states, 17 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 126 for 21373ms.. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (666states) and FLOYD_HOARE automaton (currently 15 states, 17 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 126 for 21373ms.. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (666states) and FLOYD_HOARE automaton (currently 15 states, 17 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 126 for 21373ms.. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (666states) and FLOYD_HOARE automaton (currently 15 states, 17 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 126 for 21373ms.. - TimeoutResultAtElement [Line: 170]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (666states) and FLOYD_HOARE automaton (currently 15 states, 17 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 126 for 21373ms.. - TimeoutResultAtElement [Line: 170]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (666states) and FLOYD_HOARE automaton (currently 15 states, 17 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 126 for 21373ms.. - TimeoutResultAtElement [Line: 151]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (666states) and FLOYD_HOARE automaton (currently 15 states, 17 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 126 for 21373ms.. - TimeoutResultAtElement [Line: 151]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (666states) and FLOYD_HOARE automaton (currently 15 states, 17 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 126 for 21373ms.. - TimeoutResultAtElement [Line: 152]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (666states) and FLOYD_HOARE automaton (currently 15 states, 17 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 126 for 21373ms.. - TimeoutResultAtElement [Line: 152]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (666states) and FLOYD_HOARE automaton (currently 15 states, 17 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 126 for 21373ms.. - TimeoutResultAtElement [Line: 153]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (666states) and FLOYD_HOARE automaton (currently 15 states, 17 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 126 for 21373ms.. - TimeoutResultAtElement [Line: 153]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (666states) and FLOYD_HOARE automaton (currently 15 states, 17 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 126 for 21373ms.. - TimeoutResultAtElement [Line: 154]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (666states) and FLOYD_HOARE automaton (currently 15 states, 17 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 126 for 21373ms.. - TimeoutResultAtElement [Line: 154]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (666states) and FLOYD_HOARE automaton (currently 15 states, 17 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 126 for 21373ms.. - TimeoutResultAtElement [Line: 155]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (666states) and FLOYD_HOARE automaton (currently 15 states, 17 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 126 for 21373ms.. - TimeoutResultAtElement [Line: 155]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (666states) and FLOYD_HOARE automaton (currently 15 states, 17 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 126 for 21373ms.. - TimeoutResultAtElement [Line: 156]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (666states) and FLOYD_HOARE automaton (currently 15 states, 17 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 126 for 21373ms.. - TimeoutResultAtElement [Line: 156]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (666states) and FLOYD_HOARE automaton (currently 15 states, 17 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 126 for 21373ms.. - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (666states) and FLOYD_HOARE automaton (currently 15 states, 17 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 126 for 21373ms.. - TimeoutResultAtElement [Line: 153]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (666states) and FLOYD_HOARE automaton (currently 15 states, 17 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 126 for 21373ms.. - TimeoutResultAtElement [Line: 151]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (666states) and FLOYD_HOARE automaton (currently 15 states, 17 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 126 for 21373ms.. - TimeoutResultAtElement [Line: 152]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (666states) and FLOYD_HOARE automaton (currently 15 states, 17 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 126 for 21373ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 217 locations, 31 error locations. Started 1 CEGAR loops. OverallTime: 834641.6ms, OverallIterations: 33, TraceHistogramMax: 3, EmptinessCheckTime: 69.2ms, AutomataDifference: 622389.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 27106.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1171 SDtfs, 3692 SDslu, 4127 SDs, 0 SdLazy, 6581 SolverSat, 400 SolverUnsat, 39 SolverUnknown, 0 SolverNotchecked, 117111.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1229 GetRequests, 750 SyntacticMatches, 3 SemanticMatches, 475 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2822 ImplicationChecksByTransitivity, 503658.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=751occurred in iteration=4, InterpolantAutomatonStates: 331, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1057.8ms AutomataMinimizationTime, 32 MinimizatonAttempts, 7804 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 416.8ms SsaConstructionTime, 2652.8ms SatisfiabilityAnalysisTime, 169506.8ms InterpolantComputationTime, 445 NumberOfCodeBlocks, 437 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 824 ConstructedInterpolants, 64 QuantifiedInterpolants, 14066 SizeOfPredicates, 427 NumberOfNonLiveVariables, 3419 ConjunctsInSsa, 473 ConjunctsInUnsatCore, 66 InterpolantComputations, 31 PerfectInterpolantSequences, 327/438 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