/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/popl20-bad-buffer-mult-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 15:55:19,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 15:55:19,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 15:55:19,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 15:55:19,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-07 15:55:19,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-07 15:55:19,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-07 15:55:19,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-07 15:55:19,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-07 15:55:19,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-07 15:55:19,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-07 15:55:19,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-07 15:55:19,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-07 15:55:19,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-07 15:55:19,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-07 15:55:19,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-07 15:55:19,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-07 15:55:19,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-07 15:55:19,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-07 15:55:19,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-07 15:55:19,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-07 15:55:19,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-07 15:55:19,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-07 15:55:19,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-07 15:55:19,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-07 15:55:19,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 15:55:19,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 15:55:19,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 15:55:19,502 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 15:55:19,564 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 15:55:19,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 15:55:19,565 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 15:55:19,565 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 15:55:19,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 15:55:19,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 15:55:19,567 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 15:55:19,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 15:55:19,568 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 15:55:19,568 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 15:55:19,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 15:55:19,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 15:55:19,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 15:55:19,569 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 15:55:19,569 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 15:55:19,569 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 15:55:19,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 15:55:19,570 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 15:55:19,570 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 15:55:19,570 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 15:55:19,570 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 15:55:19,571 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 15:55:19,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 15:55:19,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 15:55:19,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 15:55:19,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:55:19,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 15:55:19,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 15:55:19,572 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 15:55:19,572 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 15:55:19,573 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 15:55:19,573 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 15:55:19,573 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 15:55:19,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 15:55:19,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 15:55:19,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 15:55:19,978 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 15:55:19,979 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 15:55:19,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c [2021-10-07 15:55:20,071 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a493263a2/17fc6a6c03574b6991d2ad248a413294/FLAG9b1d08ccb [2021-10-07 15:55:20,728 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 15:55:20,730 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c [2021-10-07 15:55:20,739 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a493263a2/17fc6a6c03574b6991d2ad248a413294/FLAG9b1d08ccb [2021-10-07 15:55:21,049 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a493263a2/17fc6a6c03574b6991d2ad248a413294 [2021-10-07 15:55:21,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 15:55:21,067 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 15:55:21,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 15:55:21,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 15:55:21,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 15:55:21,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:55:21" (1/1) ... [2021-10-07 15:55:21,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fc2e728 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:55:21, skipping insertion in model container [2021-10-07 15:55:21,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:55:21" (1/1) ... [2021-10-07 15:55:21,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 15:55:21,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:55:21,338 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/popl20-bad-buffer-mult-alt.wvr.c[3424,3437] [2021-10-07 15:55:21,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:55:21,369 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-07 15:55:21,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:55:21,397 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/popl20-bad-buffer-mult-alt.wvr.c[3424,3437] [2021-10-07 15:55:21,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:55:21,410 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 15:55:21,444 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/popl20-bad-buffer-mult-alt.wvr.c[3424,3437] [2021-10-07 15:55:21,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:55:21,489 INFO L208 MainTranslator]: Completed translation [2021-10-07 15:55:21,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:55:21 WrapperNode [2021-10-07 15:55:21,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 15:55:21,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 15:55:21,493 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 15:55:21,493 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 15:55:21,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:55:21" (1/1) ... [2021-10-07 15:55:21,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:55:21" (1/1) ... [2021-10-07 15:55:21,612 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 15:55:21,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 15:55:21,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 15:55:21,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 15:55:21,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:55:21" (1/1) ... [2021-10-07 15:55:21,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:55:21" (1/1) ... [2021-10-07 15:55:21,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:55:21" (1/1) ... [2021-10-07 15:55:21,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:55:21" (1/1) ... [2021-10-07 15:55:21,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:55:21" (1/1) ... [2021-10-07 15:55:21,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:55:21" (1/1) ... [2021-10-07 15:55:21,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:55:21" (1/1) ... [2021-10-07 15:55:21,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 15:55:21,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 15:55:21,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 15:55:21,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 15:55:21,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:55:21" (1/1) ... [2021-10-07 15:55:21,734 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:55:21,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:55:21,769 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 15:55:21,796 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 15:55:21,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 15:55:21,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 15:55:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 15:55:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 15:55:21,843 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 15:55:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 15:55:21,845 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 15:55:21,846 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-07 15:55:21,846 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-07 15:55:21,846 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-07 15:55:21,846 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-07 15:55:21,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-07 15:55:21,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-07 15:55:21,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-07 15:55:21,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 15:55:21,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 15:55:21,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 15:55:21,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 15:55:21,851 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 15:55:23,457 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 15:55:23,457 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2021-10-07 15:55:23,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:55:23 BoogieIcfgContainer [2021-10-07 15:55:23,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 15:55:23,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 15:55:23,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 15:55:23,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 15:55:23,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:55:21" (1/3) ... [2021-10-07 15:55:23,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58c7ff57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:55:23, skipping insertion in model container [2021-10-07 15:55:23,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:55:21" (2/3) ... [2021-10-07 15:55:23,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58c7ff57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:55:23, skipping insertion in model container [2021-10-07 15:55:23,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:55:23" (3/3) ... [2021-10-07 15:55:23,470 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt.wvr.c [2021-10-07 15:55:23,477 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 15:55:23,477 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-10-07 15:55:23,478 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 15:55:23,520 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,520 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,520 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,521 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,521 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,521 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,521 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,522 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,522 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,522 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,522 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,523 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,523 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,523 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,524 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,524 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,524 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,524 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,525 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,525 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,525 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,525 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,526 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,526 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,527 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,527 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,527 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,527 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,528 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,528 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,528 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,528 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,529 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,529 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,529 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,529 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,529 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,530 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,530 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,530 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,531 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,531 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,531 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,531 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,532 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,532 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,532 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,533 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,533 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,533 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,534 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,534 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,534 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,534 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,535 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,535 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,535 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,535 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,535 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,536 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,536 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,536 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,536 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,537 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,537 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,537 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,537 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,538 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,538 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,538 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,539 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,539 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,539 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,539 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,539 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,540 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,540 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,540 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,541 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,541 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,541 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,541 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,542 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,542 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,542 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,542 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,542 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,543 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,543 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,543 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,547 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,547 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,547 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,547 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,548 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,548 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,548 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,548 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,550 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,551 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,551 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,551 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,551 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,552 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,554 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,554 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,554 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,554 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,555 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,555 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,555 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,555 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,557 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,557 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,557 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,558 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,558 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,558 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:55:23,566 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-07 15:55:23,619 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 15:55:23,626 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 15:55:23,627 INFO L340 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2021-10-07 15:55:23,646 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 15:55:23,659 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 231 places, 236 transitions, 504 flow [2021-10-07 15:55:23,663 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 231 places, 236 transitions, 504 flow [2021-10-07 15:55:23,665 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 231 places, 236 transitions, 504 flow [2021-10-07 15:55:23,757 INFO L129 PetriNetUnfolder]: 18/232 cut-off events. [2021-10-07 15:55:23,758 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-07 15:55:23,766 INFO L84 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 232 events. 18/232 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 206 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 185. Up to 2 conditions per place. [2021-10-07 15:55:23,773 INFO L116 LiptonReduction]: Number of co-enabled transitions 2972 [2021-10-07 15:56:02,815 INFO L131 LiptonReduction]: Checked pairs total: 6981 [2021-10-07 15:56:02,815 INFO L133 LiptonReduction]: Total number of compositions: 241 [2021-10-07 15:56:02,834 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 74 places, 67 transitions, 166 flow [2021-10-07 15:56:03,027 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3753 states, 3347 states have (on average 4.950702121302659) internal successors, (16570), 3752 states have internal predecessors, (16570), 0 states have call successors, (0), 0 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 15:56:03,046 INFO L276 IsEmpty]: Start isEmpty. Operand has 3753 states, 3347 states have (on average 4.950702121302659) internal successors, (16570), 3752 states have internal predecessors, (16570), 0 states have call successors, (0), 0 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 15:56:03,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 15:56:03,052 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:56:03,053 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 15:56:03,053 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-07 15:56:03,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:56:03,060 INFO L82 PathProgramCache]: Analyzing trace with hash 31888, now seen corresponding path program 1 times [2021-10-07 15:56:03,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:56:03,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402389484] [2021-10-07 15:56:03,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:56:03,075 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:56:03,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:56:03,081 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 15:56:03,086 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 15:56:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:56:03,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:56:03,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:56:03,385 INFO L354 Elim1Store]: treesize reduction 152, result has 17.8 percent of original size [2021-10-07 15:56:03,386 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 4 case distinctions, treesize of input 18 treesize of output 38 [2021-10-07 15:56:03,445 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 15:56:03,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:56:03,453 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 15:56:03,454 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:56:03,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [402389484] [2021-10-07 15:56:03,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [402389484] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:56:03,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:56:03,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:56:03,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910700127] [2021-10-07 15:56:03,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:56:03,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:56:03,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:56:03,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:56:03,501 INFO L87 Difference]: Start difference. First operand has 3753 states, 3347 states have (on average 4.950702121302659) internal successors, (16570), 3752 states have internal predecessors, (16570), 0 states have call successors, (0), 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 15:56:03,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:56:03,790 INFO L93 Difference]: Finished difference Result 3750 states and 16567 transitions. [2021-10-07 15:56:03,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:56:03,792 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 15:56:03,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:56:03,867 INFO L225 Difference]: With dead ends: 3750 [2021-10-07 15:56:03,867 INFO L226 Difference]: Without dead ends: 3750 [2021-10-07 15:56:03,868 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:56:03,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3750 states. [2021-10-07 15:56:04,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3750 to 3750. [2021-10-07 15:56:04,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3750 states, 3347 states have (on average 4.9498057962354345) internal successors, (16567), 3749 states have internal predecessors, (16567), 0 states have call successors, (0), 0 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 15:56:04,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3750 states to 3750 states and 16567 transitions. [2021-10-07 15:56:04,248 INFO L78 Accepts]: Start accepts. Automaton has 3750 states and 16567 transitions. Word has length 2 [2021-10-07 15:56:04,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:56:04,248 INFO L470 AbstractCegarLoop]: Abstraction has 3750 states and 16567 transitions. [2021-10-07 15:56:04,249 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 15:56:04,249 INFO L276 IsEmpty]: Start isEmpty. Operand 3750 states and 16567 transitions. [2021-10-07 15:56:04,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 15:56:04,249 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:56:04,249 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 15:56:04,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-07 15:56:04,462 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 15:56:04,463 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-07 15:56:04,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:56:04,465 INFO L82 PathProgramCache]: Analyzing trace with hash 31890, now seen corresponding path program 1 times [2021-10-07 15:56:04,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:56:04,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66870136] [2021-10-07 15:56:04,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:56:04,467 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:56:04,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:56:04,468 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 15:56:04,498 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 15:56:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:56:04,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:56:04,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:56:04,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:56:04,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:56:05,133 INFO L354 Elim1Store]: treesize reduction 345, result has 19.2 percent of original size [2021-10-07 15:56:05,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 89 [2021-10-07 15:56:05,320 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 15:56:05,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:56:05,450 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 15:56:05,450 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:56:05,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66870136] [2021-10-07 15:56:05,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [66870136] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:56:05,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:56:05,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:56:05,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99312851] [2021-10-07 15:56:05,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:56:05,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:56:05,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:56:05,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:56:05,455 INFO L87 Difference]: Start difference. First operand 3750 states and 16567 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 15:56:06,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:56:06,268 INFO L93 Difference]: Finished difference Result 7499 states and 33137 transitions. [2021-10-07 15:56:06,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:56:06,269 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 15:56:06,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:56:06,466 INFO L225 Difference]: With dead ends: 7499 [2021-10-07 15:56:06,466 INFO L226 Difference]: Without dead ends: 7499 [2021-10-07 15:56:06,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 106.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:56:06,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7499 states. [2021-10-07 15:56:06,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7499 to 3754. [2021-10-07 15:56:06,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3754 states, 3351 states have (on average 4.947478364667264) internal successors, (16579), 3753 states have internal predecessors, (16579), 0 states have call successors, (0), 0 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 15:56:06,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3754 states to 3754 states and 16579 transitions. [2021-10-07 15:56:06,819 INFO L78 Accepts]: Start accepts. Automaton has 3754 states and 16579 transitions. Word has length 2 [2021-10-07 15:56:06,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:56:06,820 INFO L470 AbstractCegarLoop]: Abstraction has 3754 states and 16579 transitions. [2021-10-07 15:56:06,826 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 15:56:06,831 INFO L276 IsEmpty]: Start isEmpty. Operand 3754 states and 16579 transitions. [2021-10-07 15:56:06,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:56:06,832 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:56:06,832 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:56:06,849 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 15:56:07,032 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 15:56:07,033 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-07 15:56:07,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:56:07,035 INFO L82 PathProgramCache]: Analyzing trace with hash 993828, now seen corresponding path program 1 times [2021-10-07 15:56:07,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:56:07,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139892076] [2021-10-07 15:56:07,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:56:07,037 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:56:07,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:56:07,039 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 15:56:07,041 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 15:56:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:56:07,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:56:07,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:56:08,011 INFO L354 Elim1Store]: treesize reduction 349, result has 18.3 percent of original size [2021-10-07 15:56:08,012 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 6 case distinctions, treesize of input 67 treesize of output 125 [2021-10-07 15:56:08,053 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-07 15:56:08,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 131 treesize of output 125 [2021-10-07 15:56:12,017 INFO L354 Elim1Store]: treesize reduction 120, result has 35.5 percent of original size [2021-10-07 15:56:12,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 135 [2021-10-07 15:56:34,184 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 15:56:34,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:56:34,401 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 15:56:34,401 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:56:34,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139892076] [2021-10-07 15:56:34,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139892076] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:56:34,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:56:34,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 15:56:34,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549991535] [2021-10-07 15:56:34,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:56:34,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:56:34,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:56:34,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=17, Unknown=1, NotChecked=0, Total=30 [2021-10-07 15:56:34,404 INFO L87 Difference]: Start difference. First operand 3754 states and 16579 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:44,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:56:44,177 INFO L93 Difference]: Finished difference Result 3128 states and 13451 transitions. [2021-10-07 15:56:44,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:56:44,179 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 15:56:44,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:56:44,211 INFO L225 Difference]: With dead ends: 3128 [2021-10-07 15:56:44,212 INFO L226 Difference]: Without dead ends: 3128 [2021-10-07 15:56:44,212 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3807.3ms TimeCoverageRelationStatistics Valid=17, Invalid=24, Unknown=1, NotChecked=0, Total=42 [2021-10-07 15:56:44,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3128 states. [2021-10-07 15:56:44,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3128 to 3128. [2021-10-07 15:56:44,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3128 states, 2807 states have (on average 4.791948699679373) internal successors, (13451), 3127 states have internal predecessors, (13451), 0 states have call successors, (0), 0 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 15:56:44,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3128 states to 3128 states and 13451 transitions. [2021-10-07 15:56:44,415 INFO L78 Accepts]: Start accepts. Automaton has 3128 states and 13451 transitions. Word has length 3 [2021-10-07 15:56:44,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:56:44,416 INFO L470 AbstractCegarLoop]: Abstraction has 3128 states and 13451 transitions. [2021-10-07 15:56:44,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:44,416 INFO L276 IsEmpty]: Start isEmpty. Operand 3128 states and 13451 transitions. [2021-10-07 15:56:44,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:56:44,417 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:56:44,417 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:56:44,432 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 15:56:44,629 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 15:56:44,630 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-07 15:56:44,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:56:44,632 INFO L82 PathProgramCache]: Analyzing trace with hash 993826, now seen corresponding path program 1 times [2021-10-07 15:56:44,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:56:44,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101084514] [2021-10-07 15:56:44,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:56:44,633 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:56:44,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:56:44,635 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 15:56:44,636 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 15:56:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:56:44,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:56:44,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:56:44,881 INFO L354 Elim1Store]: treesize reduction 176, result has 15.8 percent of original size [2021-10-07 15:56:44,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 68 treesize of output 81 [2021-10-07 15:56:45,220 INFO L354 Elim1Store]: treesize reduction 135, result has 23.3 percent of original size [2021-10-07 15:56:45,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 79 treesize of output 108 [2021-10-07 15:56:46,031 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 15:56:46,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:56:46,070 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 15:56:46,071 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:56:46,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101084514] [2021-10-07 15:56:46,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101084514] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:56:46,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:56:46,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:56:46,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250058920] [2021-10-07 15:56:46,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:56:46,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:56:46,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:56:46,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:56:46,074 INFO L87 Difference]: Start difference. First operand 3128 states and 13451 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 15:56:46,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:56:46,394 INFO L93 Difference]: Finished difference Result 2502 states and 10323 transitions. [2021-10-07 15:56:46,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:56:46,395 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 3 [2021-10-07 15:56:46,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:56:46,415 INFO L225 Difference]: With dead ends: 2502 [2021-10-07 15:56:46,415 INFO L226 Difference]: Without dead ends: 2502 [2021-10-07 15:56:46,415 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 644.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:56:46,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2502 states. [2021-10-07 15:56:46,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2502 to 2502. [2021-10-07 15:56:46,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 2263 states have (on average 4.561643835616438) internal successors, (10323), 2501 states have internal predecessors, (10323), 0 states have call successors, (0), 0 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 15:56:46,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 10323 transitions. [2021-10-07 15:56:46,522 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 10323 transitions. Word has length 3 [2021-10-07 15:56:46,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:56:46,522 INFO L470 AbstractCegarLoop]: Abstraction has 2502 states and 10323 transitions. [2021-10-07 15:56:46,522 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 15:56:46,523 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 10323 transitions. [2021-10-07 15:56:46,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 15:56:46,523 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:56:46,523 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-07 15:56:46,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-07 15:56:46,735 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 15:56:46,736 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-07 15:56:46,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:56:46,737 INFO L82 PathProgramCache]: Analyzing trace with hash 30771986, now seen corresponding path program 1 times [2021-10-07 15:56:46,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:56:46,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378066609] [2021-10-07 15:56:46,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:56:46,738 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:56:46,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:56:46,739 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 15:56:46,740 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 15:56:46,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:56:46,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:56:46,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:56:46,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:56:46,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:56:47,232 INFO L354 Elim1Store]: treesize reduction 345, result has 19.2 percent of original size [2021-10-07 15:56:47,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 89 [2021-10-07 15:56:47,461 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 15:56:47,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:56:48,180 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 15:56:48,181 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:56:48,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378066609] [2021-10-07 15:56:48,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [378066609] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:56:48,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:56:48,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 15:56:48,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127283656] [2021-10-07 15:56:48,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:56:48,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:56:48,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:56:48,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:56:48,186 INFO L87 Difference]: Start difference. First operand 2502 states and 10323 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 15:56:54,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:56:54,695 INFO L93 Difference]: Finished difference Result 14975 states and 61879 transitions. [2021-10-07 15:56:54,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:56:54,697 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 15:56:54,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:56:54,927 INFO L225 Difference]: With dead ends: 14975 [2021-10-07 15:56:54,927 INFO L226 Difference]: Without dead ends: 14975 [2021-10-07 15:56:54,928 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1118.1ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:56:54,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14975 states. [2021-10-07 15:56:55,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14975 to 2510. [2021-10-07 15:56:55,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2510 states, 2271 states have (on average 4.552619991193307) internal successors, (10339), 2509 states have internal predecessors, (10339), 0 states have call successors, (0), 0 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 15:56:55,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2510 states to 2510 states and 10339 transitions. [2021-10-07 15:56:55,541 INFO L78 Accepts]: Start accepts. Automaton has 2510 states and 10339 transitions. Word has length 4 [2021-10-07 15:56:55,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:56:55,544 INFO L470 AbstractCegarLoop]: Abstraction has 2510 states and 10339 transitions. [2021-10-07 15:56:55,544 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 15:56:55,544 INFO L276 IsEmpty]: Start isEmpty. Operand 2510 states and 10339 transitions. [2021-10-07 15:56:55,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:56:55,545 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:56:55,545 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:56:55,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-07 15:56:55,758 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 15:56:55,759 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-07 15:56:55,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:56:55,760 INFO L82 PathProgramCache]: Analyzing trace with hash 955090991, now seen corresponding path program 1 times [2021-10-07 15:56:55,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:56:55,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1005375360] [2021-10-07 15:56:55,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:56:55,761 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:56:55,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:56:55,762 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 15:56:55,764 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 15:56:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:56:55,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:56:55,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:56:55,961 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 15:56:55,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:56:56,052 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 15:56:56,052 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:56:56,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1005375360] [2021-10-07 15:56:56,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1005375360] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:56:56,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:56:56,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 15:56:56,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880715264] [2021-10-07 15:56:56,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:56:56,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:56:56,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:56:56,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:56:56,055 INFO L87 Difference]: Start difference. First operand 2510 states and 10339 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:56,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:56:56,281 INFO L93 Difference]: Finished difference Result 3369 states and 13249 transitions. [2021-10-07 15:56:56,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:56:56,283 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:56:56,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:56:56,307 INFO L225 Difference]: With dead ends: 3369 [2021-10-07 15:56:56,307 INFO L226 Difference]: Without dead ends: 3368 [2021-10-07 15:56:56,307 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.3ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:56:56,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3368 states. [2021-10-07 15:56:56,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3368 to 3143. [2021-10-07 15:56:56,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3143 states, 2866 states have (on average 4.427424982554083) internal successors, (12689), 3142 states have internal predecessors, (12689), 0 states have call successors, (0), 0 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 15:56:56,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3143 states to 3143 states and 12689 transitions. [2021-10-07 15:56:56,453 INFO L78 Accepts]: Start accepts. Automaton has 3143 states and 12689 transitions. Word has length 5 [2021-10-07 15:56:56,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:56:56,454 INFO L470 AbstractCegarLoop]: Abstraction has 3143 states and 12689 transitions. [2021-10-07 15:56:56,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:56,455 INFO L276 IsEmpty]: Start isEmpty. Operand 3143 states and 12689 transitions. [2021-10-07 15:56:56,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:56:56,455 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:56:56,455 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:56:56,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-07 15:56:56,669 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 15:56:56,669 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-07 15:56:56,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:56:56,670 INFO L82 PathProgramCache]: Analyzing trace with hash 955091100, now seen corresponding path program 1 times [2021-10-07 15:56:56,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:56:56,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2014865874] [2021-10-07 15:56:56,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:56:56,671 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:56:56,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:56:56,672 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 15:56:56,737 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 15:56:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:56:56,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:56:56,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:56:57,339 INFO L354 Elim1Store]: treesize reduction 349, result has 18.3 percent of original size [2021-10-07 15:56:57,340 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 6 case distinctions, treesize of input 58 treesize of output 116 [2021-10-07 15:56:57,353 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-07 15:56:57,354 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 121 treesize of output 117 [2021-10-07 15:57:00,778 INFO L354 Elim1Store]: treesize reduction 120, result has 35.5 percent of original size [2021-10-07 15:57:00,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 77 treesize of output 131 [2021-10-07 15:57:52,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:57:52,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:57:52,735 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 15:57:52,736 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:57:52,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2014865874] [2021-10-07 15:57:52,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2014865874] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:57:52,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:57:52,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 15:57:52,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162810775] [2021-10-07 15:57:52,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:57:52,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:57:52,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:57:52,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=17, Unknown=1, NotChecked=0, Total=30 [2021-10-07 15:57:52,738 INFO L87 Difference]: Start difference. First operand 3143 states and 12689 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:58:01,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:58:01,800 INFO L93 Difference]: Finished difference Result 2962 states and 11976 transitions. [2021-10-07 15:58:01,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:58:01,802 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:58:01,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:58:01,821 INFO L225 Difference]: With dead ends: 2962 [2021-10-07 15:58:01,821 INFO L226 Difference]: Without dead ends: 2962 [2021-10-07 15:58:01,822 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2217.1ms TimeCoverageRelationStatistics Valid=12, Invalid=17, Unknown=1, NotChecked=0, Total=30 [2021-10-07 15:58:01,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2021-10-07 15:58:01,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 2962. [2021-10-07 15:58:01,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2962 states, 2724 states have (on average 4.39647577092511) internal successors, (11976), 2961 states have internal predecessors, (11976), 0 states have call successors, (0), 0 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 15:58:01,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2962 states to 2962 states and 11976 transitions. [2021-10-07 15:58:01,967 INFO L78 Accepts]: Start accepts. Automaton has 2962 states and 11976 transitions. Word has length 5 [2021-10-07 15:58:01,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:58:01,968 INFO L470 AbstractCegarLoop]: Abstraction has 2962 states and 11976 transitions. [2021-10-07 15:58:01,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:58:01,968 INFO L276 IsEmpty]: Start isEmpty. Operand 2962 states and 11976 transitions. [2021-10-07 15:58:01,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:58:01,970 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:58:01,970 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:58:01,986 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 15:58:02,183 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 15:58:02,183 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-07 15:58:02,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:58:02,185 INFO L82 PathProgramCache]: Analyzing trace with hash 955091102, now seen corresponding path program 1 times [2021-10-07 15:58:02,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:58:02,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440174571] [2021-10-07 15:58:02,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:58:02,185 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:58:02,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:58:02,186 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 15:58:02,210 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 15:58:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:58:02,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:58:02,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:58:02,486 INFO L354 Elim1Store]: treesize reduction 160, result has 17.1 percent of original size [2021-10-07 15:58:02,486 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 7 case distinctions, treesize of input 58 treesize of output 73 [2021-10-07 15:58:02,785 INFO L354 Elim1Store]: treesize reduction 135, result has 23.3 percent of original size [2021-10-07 15:58:02,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 80 treesize of output 109 [2021-10-07 15:58:03,212 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 15:58:03,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:58:03,246 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 15:58:03,246 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:58:03,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440174571] [2021-10-07 15:58:03,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440174571] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:58:03,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:58:03,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:58:03,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723344070] [2021-10-07 15:58:03,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:58:03,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:58:03,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:58:03,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:58:03,248 INFO L87 Difference]: Start difference. First operand 2962 states and 11976 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 15:58:03,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:58:03,554 INFO L93 Difference]: Finished difference Result 2781 states and 11263 transitions. [2021-10-07 15:58:03,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:58:03,556 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 5 [2021-10-07 15:58:03,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:58:03,595 INFO L225 Difference]: With dead ends: 2781 [2021-10-07 15:58:03,595 INFO L226 Difference]: Without dead ends: 2781 [2021-10-07 15:58:03,595 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 103.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:58:03,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2781 states. [2021-10-07 15:58:03,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2781 to 2781. [2021-10-07 15:58:03,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2781 states, 2582 states have (on average 4.362122385747482) internal successors, (11263), 2780 states have internal predecessors, (11263), 0 states have call successors, (0), 0 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 15:58:03,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2781 states to 2781 states and 11263 transitions. [2021-10-07 15:58:03,692 INFO L78 Accepts]: Start accepts. Automaton has 2781 states and 11263 transitions. Word has length 5 [2021-10-07 15:58:03,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:58:03,693 INFO L470 AbstractCegarLoop]: Abstraction has 2781 states and 11263 transitions. [2021-10-07 15:58:03,693 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 15:58:03,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2781 states and 11263 transitions. [2021-10-07 15:58:03,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 15:58:03,694 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:58:03,694 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-07 15:58:03,708 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 15:58:03,906 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 15:58:03,907 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-07 15:58:03,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:58:03,908 INFO L82 PathProgramCache]: Analyzing trace with hash -491611333, now seen corresponding path program 1 times [2021-10-07 15:58:03,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:58:03,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [220442901] [2021-10-07 15:58:03,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:58:03,910 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:58:03,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:58:03,911 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 15:58:03,912 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 15:58:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:58:04,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 15:58:04,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:58:04,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:58:04,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:58:04,477 INFO L354 Elim1Store]: treesize reduction 345, result has 19.2 percent of original size [2021-10-07 15:58:04,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 107 [2021-10-07 15:58:04,615 INFO L354 Elim1Store]: treesize reduction 152, result has 17.8 percent of original size [2021-10-07 15:58:04,615 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 4 case distinctions, treesize of input 107 treesize of output 126 [2021-10-07 15:58:04,889 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-07 15:58:04,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-10-07 15:58:04,902 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 15:58:04,902 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 31 treesize of output 31 [2021-10-07 15:58:05,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:58:05,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:58:06,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:58:06,787 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:58:06,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [220442901] [2021-10-07 15:58:06,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [220442901] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:58:06,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:58:06,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 15:58:06,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86305931] [2021-10-07 15:58:06,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:58:06,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:58:06,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:58:06,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:58:06,789 INFO L87 Difference]: Start difference. First operand 2781 states and 11263 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 15:58:30,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:58:30,118 INFO L93 Difference]: Finished difference Result 6515 states and 26067 transitions. [2021-10-07 15:58:30,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:58:30,120 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-07 15:58:30,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:58:30,158 INFO L225 Difference]: With dead ends: 6515 [2021-10-07 15:58:30,158 INFO L226 Difference]: Without dead ends: 6515 [2021-10-07 15:58:30,159 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 11645.1ms TimeCoverageRelationStatistics Valid=50, Invalid=130, Unknown=2, NotChecked=0, Total=182 [2021-10-07 15:58:30,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6515 states. [2021-10-07 15:58:30,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6515 to 3837. [2021-10-07 15:58:30,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3837 states, 3638 states have (on average 4.5065970313358985) internal successors, (16395), 3836 states have internal predecessors, (16395), 0 states have call successors, (0), 0 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 15:58:30,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3837 states to 3837 states and 16395 transitions. [2021-10-07 15:58:30,379 INFO L78 Accepts]: Start accepts. Automaton has 3837 states and 16395 transitions. Word has length 6 [2021-10-07 15:58:30,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:58:30,380 INFO L470 AbstractCegarLoop]: Abstraction has 3837 states and 16395 transitions. [2021-10-07 15:58:30,380 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 15:58:30,380 INFO L276 IsEmpty]: Start isEmpty. Operand 3837 states and 16395 transitions. [2021-10-07 15:58:30,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 15:58:30,381 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:58:30,381 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-07 15:58:30,399 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 15:58:30,594 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 15:58:30,595 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-07 15:58:30,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:58:30,596 INFO L82 PathProgramCache]: Analyzing trace with hash -491611334, now seen corresponding path program 1 times [2021-10-07 15:58:30,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:58:30,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630409586] [2021-10-07 15:58:30,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:58:30,598 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:58:30,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:58:30,599 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 15:58:30,601 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 15:58:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:58:30,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:58:30,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:58:30,884 INFO L354 Elim1Store]: treesize reduction 152, result has 17.8 percent of original size [2021-10-07 15:58:30,885 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 4 case distinctions, treesize of input 18 treesize of output 38 [2021-10-07 15:58:30,942 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-07 15:58:30,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 23 [2021-10-07 15:58:30,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:58:30,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:58:31,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:58:31,034 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:58:31,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630409586] [2021-10-07 15:58:31,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [630409586] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:58:31,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:58:31,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-07 15:58:31,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262491517] [2021-10-07 15:58:31,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:58:31,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:58:31,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:58:31,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:58:31,037 INFO L87 Difference]: Start difference. First operand 3837 states and 16395 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 15:58:31,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:58:31,249 INFO L93 Difference]: Finished difference Result 2823 states and 11562 transitions. [2021-10-07 15:58:31,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:58:31,250 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-07 15:58:31,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:58:31,264 INFO L225 Difference]: With dead ends: 2823 [2021-10-07 15:58:31,264 INFO L226 Difference]: Without dead ends: 2823 [2021-10-07 15:58:31,264 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:58:31,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2021-10-07 15:58:31,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2823. [2021-10-07 15:58:31,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2711 states have (on average 4.264846919955736) internal successors, (11562), 2822 states have internal predecessors, (11562), 0 states have call successors, (0), 0 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 15:58:31,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 11562 transitions. [2021-10-07 15:58:31,462 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 11562 transitions. Word has length 6 [2021-10-07 15:58:31,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:58:31,462 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 11562 transitions. [2021-10-07 15:58:31,463 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 15:58:31,463 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 11562 transitions. [2021-10-07 15:58:31,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:58:31,465 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:58:31,466 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:58:31,478 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 15:58:31,678 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 15:58:31,678 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-07 15:58:31,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:58:31,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1280430033, now seen corresponding path program 1 times [2021-10-07 15:58:31,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:58:31,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824880916] [2021-10-07 15:58:31,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:58:31,681 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:58:31,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:58:31,683 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 15:58:31,684 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 15:58:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:58:31,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:58:31,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:58:32,442 INFO L354 Elim1Store]: treesize reduction 349, result has 18.3 percent of original size [2021-10-07 15:58:32,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 104 [2021-10-07 15:58:32,449 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 107 treesize of output 105 [2021-10-07 15:58:35,632 INFO L354 Elim1Store]: treesize reduction 120, result has 35.5 percent of original size [2021-10-07 15:58:35,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 69 treesize of output 123 [2021-10-07 16:00:25,706 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 16:00:25,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:00:25,963 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 16:00:25,964 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:00:25,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1824880916] [2021-10-07 16:00:25,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1824880916] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:00:25,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:00:25,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 16:00:25,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266185683] [2021-10-07 16:00:25,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:00:25,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:00:25,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:00:25,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=17, Unknown=1, NotChecked=0, Total=30 [2021-10-07 16:00:25,966 INFO L87 Difference]: Start difference. First operand 2823 states and 11562 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:00:41,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:00:41,811 INFO L93 Difference]: Finished difference Result 2748 states and 11317 transitions. [2021-10-07 16:00:41,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:00:41,814 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 16:00:41,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:00:41,825 INFO L225 Difference]: With dead ends: 2748 [2021-10-07 16:00:41,825 INFO L226 Difference]: Without dead ends: 2748 [2021-10-07 16:00:41,826 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4391.5ms TimeCoverageRelationStatistics Valid=17, Invalid=24, Unknown=1, NotChecked=0, Total=42 [2021-10-07 16:00:41,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2021-10-07 16:00:41,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 2748. [2021-10-07 16:00:41,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2748 states, 2651 states have (on average 4.268955111278763) internal successors, (11317), 2747 states have internal predecessors, (11317), 0 states have call successors, (0), 0 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 16:00:41,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2748 states to 2748 states and 11317 transitions. [2021-10-07 16:00:41,997 INFO L78 Accepts]: Start accepts. Automaton has 2748 states and 11317 transitions. Word has length 7 [2021-10-07 16:00:41,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:00:41,998 INFO L470 AbstractCegarLoop]: Abstraction has 2748 states and 11317 transitions. [2021-10-07 16:00:41,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:00:41,998 INFO L276 IsEmpty]: Start isEmpty. Operand 2748 states and 11317 transitions. [2021-10-07 16:00:41,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 16:00:41,999 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:00:41,999 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:00:42,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-10-07 16:00:42,211 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 16:00:42,212 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-07 16:00:42,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:00:42,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1280430032, now seen corresponding path program 1 times [2021-10-07 16:00:42,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:00:42,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732526899] [2021-10-07 16:00:42,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:00:42,215 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:00:42,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:00:42,216 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 16:00:42,217 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 16:00:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:00:42,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 16:00:42,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:00:42,537 INFO L354 Elim1Store]: treesize reduction 152, result has 17.8 percent of original size [2021-10-07 16:00:42,537 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 5 case distinctions, treesize of input 44 treesize of output 61 [2021-10-07 16:00:42,746 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-10-07 16:00:42,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 42 [2021-10-07 16:00:43,095 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 16:00:43,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:00:43,162 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 16:00:43,162 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:00:43,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732526899] [2021-10-07 16:00:43,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1732526899] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:00:43,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:00:43,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:00:43,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932426752] [2021-10-07 16:00:43,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:00:43,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:00:43,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:00:43,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:00:43,165 INFO L87 Difference]: Start difference. First operand 2748 states and 11317 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 16:00:43,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:00:43,335 INFO L93 Difference]: Finished difference Result 2673 states and 11072 transitions. [2021-10-07 16:00:43,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:00:43,337 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 7 [2021-10-07 16:00:43,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:00:43,347 INFO L225 Difference]: With dead ends: 2673 [2021-10-07 16:00:43,347 INFO L226 Difference]: Without dead ends: 2666 [2021-10-07 16:00:43,347 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 201.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:00:43,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2021-10-07 16:00:43,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 2666. [2021-10-07 16:00:43,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2666 states, 2584 states have (on average 4.2743808049535605) internal successors, (11045), 2665 states have internal predecessors, (11045), 0 states have call successors, (0), 0 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 16:00:43,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2666 states to 2666 states and 11045 transitions. [2021-10-07 16:00:43,484 INFO L78 Accepts]: Start accepts. Automaton has 2666 states and 11045 transitions. Word has length 7 [2021-10-07 16:00:43,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:00:43,485 INFO L470 AbstractCegarLoop]: Abstraction has 2666 states and 11045 transitions. [2021-10-07 16:00:43,485 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 16:00:43,485 INFO L276 IsEmpty]: Start isEmpty. Operand 2666 states and 11045 transitions. [2021-10-07 16:00:43,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 16:00:43,487 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:00:43,487 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:00:43,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-07 16:00:43,697 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 16:00:43,698 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-07 16:00:43,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:00:43,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1280430181, now seen corresponding path program 1 times [2021-10-07 16:00:43,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:00:43,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1728952449] [2021-10-07 16:00:43,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:00:43,701 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:00:43,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:00:43,702 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 16:00:43,703 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 16:00:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:00:43,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:00:43,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:00:43,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-07 16:00:43,898 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 16:00:43,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:00:43,926 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 16:00:43,927 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:00:43,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1728952449] [2021-10-07 16:00:43,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1728952449] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:00:43,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:00:43,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-07 16:00:43,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943203217] [2021-10-07 16:00:43,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:00:43,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:00:43,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:00:43,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:00:43,929 INFO L87 Difference]: Start difference. First operand 2666 states and 11045 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 16:00:44,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:00:44,215 INFO L93 Difference]: Finished difference Result 1846 states and 7550 transitions. [2021-10-07 16:00:44,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:00:44,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 7 [2021-10-07 16:00:44,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:00:44,225 INFO L225 Difference]: With dead ends: 1846 [2021-10-07 16:00:44,225 INFO L226 Difference]: Without dead ends: 1846 [2021-10-07 16:00:44,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 16:00:44,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2021-10-07 16:00:44,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1846. [2021-10-07 16:00:44,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1846 states, 1801 states have (on average 4.19211549139367) internal successors, (7550), 1845 states have internal predecessors, (7550), 0 states have call successors, (0), 0 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 16:00:44,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1846 states to 1846 states and 7550 transitions. [2021-10-07 16:00:44,289 INFO L78 Accepts]: Start accepts. Automaton has 1846 states and 7550 transitions. Word has length 7 [2021-10-07 16:00:44,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:00:44,290 INFO L470 AbstractCegarLoop]: Abstraction has 1846 states and 7550 transitions. [2021-10-07 16:00:44,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 16:00:44,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1846 states and 7550 transitions. [2021-10-07 16:00:44,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 16:00:44,291 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:00:44,291 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:00:44,310 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 16:00:44,506 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 16:00:44,507 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-07 16:00:44,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:00:44,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1280430180, now seen corresponding path program 1 times [2021-10-07 16:00:44,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:00:44,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452379923] [2021-10-07 16:00:44,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:00:44,510 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:00:44,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:00:44,511 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 16:00:44,521 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 16:00:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:00:44,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 16:00:44,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:00:44,805 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 16:00:44,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:00:44,889 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 16:00:44,890 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:00:44,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452379923] [2021-10-07 16:00:44,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452379923] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:00:44,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:00:44,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-07 16:00:44,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332176365] [2021-10-07 16:00:44,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:00:44,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:00:44,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:00:44,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:00:44,893 INFO L87 Difference]: Start difference. First operand 1846 states and 7550 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 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 16:00:45,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:00:45,161 INFO L93 Difference]: Finished difference Result 2633 states and 10183 transitions. [2021-10-07 16:00:45,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:00:45,164 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 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 16:00:45,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:00:45,176 INFO L225 Difference]: With dead ends: 2633 [2021-10-07 16:00:45,176 INFO L226 Difference]: Without dead ends: 2594 [2021-10-07 16:00:45,176 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 117.9ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-07 16:00:45,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2594 states. [2021-10-07 16:00:45,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2594 to 2448. [2021-10-07 16:00:45,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2448 states, 2398 states have (on average 4.065888240200167) internal successors, (9750), 2447 states have internal predecessors, (9750), 0 states have call successors, (0), 0 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 16:00:45,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 9750 transitions. [2021-10-07 16:00:45,262 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 9750 transitions. Word has length 7 [2021-10-07 16:00:45,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:00:45,263 INFO L470 AbstractCegarLoop]: Abstraction has 2448 states and 9750 transitions. [2021-10-07 16:00:45,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 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 16:00:45,263 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 9750 transitions. [2021-10-07 16:00:45,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 16:00:45,264 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:00:45,264 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1] [2021-10-07 16:00:45,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-07 16:00:45,477 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 16:00:45,478 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-07 16:00:45,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:00:45,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1102395374, now seen corresponding path program 2 times [2021-10-07 16:00:45,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:00:45,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [876615604] [2021-10-07 16:00:45,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:00:45,480 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:00:45,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:00:45,483 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 16:00:45,486 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 16:00:45,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:00:45,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:00:45,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:00:45,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:00:45,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:00:45,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:00:46,303 INFO L354 Elim1Store]: treesize reduction 345, result has 19.2 percent of original size [2021-10-07 16:00:46,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 89 [2021-10-07 16:00:46,793 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:00:46,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:00:48,949 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:00:48,949 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:00:48,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [876615604] [2021-10-07 16:00:48,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [876615604] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:00:48,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:00:48,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:00:48,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070582782] [2021-10-07 16:00:48,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:00:48,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:00:48,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:00:48,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:00:48,951 INFO L87 Difference]: Start difference. First operand 2448 states and 9750 transitions. Second operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 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 16:01:12,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:01:12,684 INFO L93 Difference]: Finished difference Result 17134 states and 70017 transitions. [2021-10-07 16:01:12,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 16:01:12,686 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 16:01:12,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:01:12,783 INFO L225 Difference]: With dead ends: 17134 [2021-10-07 16:01:12,783 INFO L226 Difference]: Without dead ends: 17134 [2021-10-07 16:01:12,783 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 7484.8ms TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:01:12,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17134 states. [2021-10-07 16:01:13,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17134 to 2468. [2021-10-07 16:01:13,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2468 states, 2418 states have (on average 4.048800661703887) internal successors, (9790), 2467 states have internal predecessors, (9790), 0 states have call successors, (0), 0 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 16:01:13,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 9790 transitions. [2021-10-07 16:01:13,251 INFO L78 Accepts]: Start accepts. Automaton has 2468 states and 9790 transitions. Word has length 8 [2021-10-07 16:01:13,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:01:13,253 INFO L470 AbstractCegarLoop]: Abstraction has 2468 states and 9790 transitions. [2021-10-07 16:01:13,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 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 16:01:13,253 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states and 9790 transitions. [2021-10-07 16:01:13,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 16:01:13,259 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:01:13,259 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:01:13,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-07 16:01:13,472 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 16:01:13,472 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-07 16:01:13,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:01:13,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1893401804, now seen corresponding path program 1 times [2021-10-07 16:01:13,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:01:13,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088304310] [2021-10-07 16:01:13,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:01:13,475 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:01:13,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:01:13,476 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 16:01:13,477 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 16:01:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:01:13,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:01:13,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:01:13,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-07 16:01:13,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:13,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:01:14,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:14,909 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:01:14,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088304310] [2021-10-07 16:01:14,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088304310] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:01:14,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:01:14,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-07 16:01:14,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491777215] [2021-10-07 16:01:14,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:01:14,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:01:14,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:01:14,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:01:14,911 INFO L87 Difference]: Start difference. First operand 2468 states and 9790 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:18,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:01:18,589 INFO L93 Difference]: Finished difference Result 4900 states and 19393 transitions. [2021-10-07 16:01:18,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 16:01:18,590 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 16:01:18,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:01:18,610 INFO L225 Difference]: With dead ends: 4900 [2021-10-07 16:01:18,610 INFO L226 Difference]: Without dead ends: 4784 [2021-10-07 16:01:18,610 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2034.3ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:01:18,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4784 states. [2021-10-07 16:01:18,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4784 to 3405. [2021-10-07 16:01:18,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3405 states, 3355 states have (on average 4.138002980625932) internal successors, (13883), 3404 states have internal predecessors, (13883), 0 states have call successors, (0), 0 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 16:01:18,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3405 states to 3405 states and 13883 transitions. [2021-10-07 16:01:18,800 INFO L78 Accepts]: Start accepts. Automaton has 3405 states and 13883 transitions. Word has length 8 [2021-10-07 16:01:18,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:01:18,801 INFO L470 AbstractCegarLoop]: Abstraction has 3405 states and 13883 transitions. [2021-10-07 16:01:18,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:18,801 INFO L276 IsEmpty]: Start isEmpty. Operand 3405 states and 13883 transitions. [2021-10-07 16:01:18,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 16:01:18,803 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:01:18,803 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2021-10-07 16:01:18,821 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 16:01:19,019 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 16:01:19,019 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-07 16:01:19,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:01:19,020 INFO L82 PathProgramCache]: Analyzing trace with hash 186641199, now seen corresponding path program 2 times [2021-10-07 16:01:19,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:01:19,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [793992619] [2021-10-07 16:01:19,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:01:19,021 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:01:19,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:01:19,022 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 16:01:19,057 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 16:01:19,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 16:01:19,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:01:19,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:01:19,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:01:19,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:01:19,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:01:19,788 INFO L354 Elim1Store]: treesize reduction 345, result has 19.2 percent of original size [2021-10-07 16:01:19,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 107 [2021-10-07 16:01:19,961 INFO L354 Elim1Store]: treesize reduction 152, result has 17.8 percent of original size [2021-10-07 16:01:19,962 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 4 case distinctions, treesize of input 107 treesize of output 126 [2021-10-07 16:01:20,204 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-07 16:01:20,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-10-07 16:01:20,223 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 16:01:20,224 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 29 treesize of output 29 [2021-10-07 16:01:20,462 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-07 16:01:20,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:01:23,295 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-07 16:01:23,296 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:01:23,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [793992619] [2021-10-07 16:01:23,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [793992619] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:01:23,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:01:23,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 16:01:23,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825727573] [2021-10-07 16:01:23,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:01:23,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:01:23,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:01:23,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:01:23,299 INFO L87 Difference]: Start difference. First operand 3405 states and 13883 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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 16:01:23,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:01:23,839 INFO L93 Difference]: Finished difference Result 2677 states and 10802 transitions. [2021-10-07 16:01:23,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:01:23,841 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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 9 [2021-10-07 16:01:23,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:01:23,851 INFO L225 Difference]: With dead ends: 2677 [2021-10-07 16:01:23,852 INFO L226 Difference]: Without dead ends: 2677 [2021-10-07 16:01:23,852 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 493.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:01:23,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2677 states. [2021-10-07 16:01:23,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2677 to 1723. [2021-10-07 16:01:23,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1723 states, 1700 states have (on average 3.907058823529412) internal successors, (6642), 1722 states have internal predecessors, (6642), 0 states have call successors, (0), 0 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 16:01:23,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 6642 transitions. [2021-10-07 16:01:23,937 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 6642 transitions. Word has length 9 [2021-10-07 16:01:23,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:01:23,937 INFO L470 AbstractCegarLoop]: Abstraction has 1723 states and 6642 transitions. [2021-10-07 16:01:23,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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 16:01:23,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 6642 transitions. [2021-10-07 16:01:23,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 16:01:23,938 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:01:23,938 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:01:23,954 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 16:01:24,150 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 16:01:24,151 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-07 16:01:24,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:01:24,152 INFO L82 PathProgramCache]: Analyzing trace with hash -2132592587, now seen corresponding path program 1 times [2021-10-07 16:01:24,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:01:24,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1096306751] [2021-10-07 16:01:24,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:01:24,153 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:01:24,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:01:24,155 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 16:01:24,156 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 16:01:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:01:24,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:01:24,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:01:24,520 INFO L354 Elim1Store]: treesize reduction 152, result has 17.8 percent of original size [2021-10-07 16:01:24,521 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 42 treesize of output 59 [2021-10-07 16:01:24,824 INFO L354 Elim1Store]: treesize reduction 135, result has 23.3 percent of original size [2021-10-07 16:01:24,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 67 treesize of output 96 [2021-10-07 16:01:25,795 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 16:01:25,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:01:25,865 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 16:01:25,865 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:01:25,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1096306751] [2021-10-07 16:01:25,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1096306751] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:01:25,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:01:25,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:01:25,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561775159] [2021-10-07 16:01:25,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:01:25,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:01:25,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:01:25,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:01:25,867 INFO L87 Difference]: Start difference. First operand 1723 states and 6642 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 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 16:01:26,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:01:26,045 INFO L93 Difference]: Finished difference Result 1617 states and 6214 transitions. [2021-10-07 16:01:26,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:01:26,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-07 16:01:26,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:01:26,052 INFO L225 Difference]: With dead ends: 1617 [2021-10-07 16:01:26,052 INFO L226 Difference]: Without dead ends: 1617 [2021-10-07 16:01:26,052 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 83.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:01:26,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2021-10-07 16:01:26,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1617. [2021-10-07 16:01:26,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1601 states have (on average 3.881324172392255) internal successors, (6214), 1616 states have internal predecessors, (6214), 0 states have call successors, (0), 0 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 16:01:26,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 6214 transitions. [2021-10-07 16:01:26,094 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 6214 transitions. Word has length 9 [2021-10-07 16:01:26,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:01:26,095 INFO L470 AbstractCegarLoop]: Abstraction has 1617 states and 6214 transitions. [2021-10-07 16:01:26,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 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 16:01:26,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 6214 transitions. [2021-10-07 16:01:26,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 16:01:26,096 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:01:26,096 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:01:26,109 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 16:01:26,296 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 16:01:26,299 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-07 16:01:26,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:01:26,300 INFO L82 PathProgramCache]: Analyzing trace with hash -2132592586, now seen corresponding path program 1 times [2021-10-07 16:01:26,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:01:26,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55463557] [2021-10-07 16:01:26,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:01:26,301 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:01:26,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:01:26,303 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 16:01:26,306 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 16:01:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:01:26,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 16:01:26,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:01:27,114 INFO L354 Elim1Store]: treesize reduction 361, result has 15.5 percent of original size [2021-10-07 16:01:27,115 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 6 case distinctions, treesize of input 46 treesize of output 92 [2021-10-07 16:01:27,124 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 96 treesize of output 94 [2021-10-07 16:01:28,330 INFO L354 Elim1Store]: treesize reduction 144, result has 22.6 percent of original size [2021-10-07 16:01:28,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 58 treesize of output 88 [2021-10-07 16:02:01,650 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 16:02:01,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:02:01,914 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 16:02:01,915 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:02:01,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55463557] [2021-10-07 16:02:01,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55463557] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:02:01,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:02:01,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 16:02:01,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796090027] [2021-10-07 16:02:01,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:02:01,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:02:01,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:02:01,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:02:01,916 INFO L87 Difference]: Start difference. First operand 1617 states and 6214 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 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 16:02:06,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:02:06,525 INFO L93 Difference]: Finished difference Result 1511 states and 5786 transitions. [2021-10-07 16:02:06,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:02:06,526 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-07 16:02:06,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:02:06,530 INFO L225 Difference]: With dead ends: 1511 [2021-10-07 16:02:06,531 INFO L226 Difference]: Without dead ends: 1430 [2021-10-07 16:02:06,531 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3044.2ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-07 16:02:06,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2021-10-07 16:02:06,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1430. [2021-10-07 16:02:06,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1421 states have (on average 3.8691062631949333) internal successors, (5498), 1429 states have internal predecessors, (5498), 0 states have call successors, (0), 0 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 16:02:06,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 5498 transitions. [2021-10-07 16:02:06,560 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 5498 transitions. Word has length 9 [2021-10-07 16:02:06,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:02:06,560 INFO L470 AbstractCegarLoop]: Abstraction has 1430 states and 5498 transitions. [2021-10-07 16:02:06,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 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 16:02:06,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 5498 transitions. [2021-10-07 16:02:06,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 16:02:06,561 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:02:06,561 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:02:06,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-10-07 16:02:06,763 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 16:02:06,764 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-07 16:02:06,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:02:06,764 INFO L82 PathProgramCache]: Analyzing trace with hash 47315868, now seen corresponding path program 2 times [2021-10-07 16:02:06,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:02:06,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843040173] [2021-10-07 16:02:06,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:02:06,766 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:02:06,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:02:06,768 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 16:02:06,769 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 16:02:07,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 16:02:07,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:02:07,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:02:07,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:02:07,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-07 16:02:07,209 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-07 16:02:07,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:02:08,397 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-07 16:02:08,398 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:02:08,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843040173] [2021-10-07 16:02:08,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843040173] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:02:08,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:02:08,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-07 16:02:08,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417625502] [2021-10-07 16:02:08,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:02:08,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:02:08,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:02:08,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:02:08,399 INFO L87 Difference]: Start difference. First operand 1430 states and 5498 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:02:08,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:02:08,722 INFO L93 Difference]: Finished difference Result 1114 states and 4210 transitions. [2021-10-07 16:02:08,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:02:08,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-07 16:02:08,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:02:08,727 INFO L225 Difference]: With dead ends: 1114 [2021-10-07 16:02:08,727 INFO L226 Difference]: Without dead ends: 1050 [2021-10-07 16:02:08,728 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 348.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-07 16:02:08,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2021-10-07 16:02:08,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 660. [2021-10-07 16:02:08,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 657 states have (on average 3.6012176560121767) internal successors, (2366), 659 states have internal predecessors, (2366), 0 states have call successors, (0), 0 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 16:02:08,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 2366 transitions. [2021-10-07 16:02:08,743 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 2366 transitions. Word has length 11 [2021-10-07 16:02:08,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:02:08,743 INFO L470 AbstractCegarLoop]: Abstraction has 660 states and 2366 transitions. [2021-10-07 16:02:08,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:02:08,743 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 2366 transitions. [2021-10-07 16:02:08,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 16:02:08,745 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:02:08,745 INFO L512 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2021-10-07 16:02:08,755 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 16:02:08,945 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 16:02:08,946 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-07 16:02:08,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:02:08,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1811179359, now seen corresponding path program 1 times [2021-10-07 16:02:08,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:02:08,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77046325] [2021-10-07 16:02:08,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:02:08,948 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:02:08,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:02:08,950 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 16:02:08,952 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 16:02:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:02:09,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 16:02:09,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:02:09,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-07 16:02:09,935 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:02:09,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:02:14,684 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:02:14,684 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:02:14,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [77046325] [2021-10-07 16:02:14,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [77046325] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:02:14,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:02:14,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-10-07 16:02:14,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126720030] [2021-10-07 16:02:14,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 16:02:14,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:02:14,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 16:02:14,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2021-10-07 16:02:14,686 INFO L87 Difference]: Start difference. First operand 660 states and 2366 transitions. Second operand has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:03:09,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:03:09,663 INFO L93 Difference]: Finished difference Result 9408 states and 36306 transitions. [2021-10-07 16:03:09,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 16:03:09,665 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-07 16:03:09,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:03:09,697 INFO L225 Difference]: With dead ends: 9408 [2021-10-07 16:03:09,697 INFO L226 Difference]: Without dead ends: 9408 [2021-10-07 16:03:09,697 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 27520.4ms TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 16:03:09,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9408 states. [2021-10-07 16:03:09,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9408 to 684. [2021-10-07 16:03:09,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 681 states have (on average 3.5447870778267254) internal successors, (2414), 683 states have internal predecessors, (2414), 0 states have call successors, (0), 0 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 16:03:09,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 2414 transitions. [2021-10-07 16:03:09,772 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 2414 transitions. Word has length 13 [2021-10-07 16:03:09,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:03:09,772 INFO L470 AbstractCegarLoop]: Abstraction has 684 states and 2414 transitions. [2021-10-07 16:03:09,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:03:09,773 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 2414 transitions. [2021-10-07 16:03:09,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:03:09,775 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:03:09,775 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1] [2021-10-07 16:03:09,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-10-07 16:03:09,977 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 16:03:09,977 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-07 16:03:09,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:03:09,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1505870354, now seen corresponding path program 3 times [2021-10-07 16:03:09,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:03:09,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282010650] [2021-10-07 16:03:09,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:03:09,980 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:03:09,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:03:09,981 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 16:03:09,992 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 16:03:10,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-07 16:03:10,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:03:10,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 16:03:10,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:03:10,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:03:10,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:03:10,972 INFO L354 Elim1Store]: treesize reduction 345, result has 19.2 percent of original size [2021-10-07 16:03:10,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 89 [2021-10-07 16:03:11,988 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:03:11,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:03:18,387 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:03:18,387 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:03:18,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282010650] [2021-10-07 16:03:18,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282010650] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:03:18,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:03:18,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2021-10-07 16:03:18,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062792410] [2021-10-07 16:03:18,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-07 16:03:18,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:03:18,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-07 16:03:18,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2021-10-07 16:03:18,390 INFO L87 Difference]: Start difference. First operand 684 states and 2414 transitions. Second operand has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 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 16:03:35,289 WARN L207 SmtUtils]: Spent 10.98 s on a formula simplification that was a NOOP. DAG size: 168 [2021-10-07 16:03:46,536 WARN L207 SmtUtils]: Spent 10.03 s on a formula simplification that was a NOOP. DAG size: 157 [2021-10-07 16:03:55,347 WARN L207 SmtUtils]: Spent 7.64 s on a formula simplification that was a NOOP. DAG size: 146 [2021-10-07 16:04:30,011 WARN L207 SmtUtils]: Spent 5.36 s on a formula simplification that was a NOOP. DAG size: 136 [2021-10-07 16:04:57,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:04:57,061 INFO L93 Difference]: Finished difference Result 7254 states and 27888 transitions. [2021-10-07 16:04:57,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-07 16:04:57,063 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 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 16 [2021-10-07 16:04:57,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:04:57,088 INFO L225 Difference]: With dead ends: 7254 [2021-10-07 16:04:57,089 INFO L226 Difference]: Without dead ends: 7254 [2021-10-07 16:04:57,090 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 64822.5ms TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2021-10-07 16:04:57,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7254 states. [2021-10-07 16:04:57,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7254 to 700. [2021-10-07 16:04:57,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 697 states have (on average 3.509325681492109) internal successors, (2446), 699 states have internal predecessors, (2446), 0 states have call successors, (0), 0 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 16:04:57,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 2446 transitions. [2021-10-07 16:04:57,155 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 2446 transitions. Word has length 16 [2021-10-07 16:04:57,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:04:57,155 INFO L470 AbstractCegarLoop]: Abstraction has 700 states and 2446 transitions. [2021-10-07 16:04:57,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 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 16:04:57,155 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 2446 transitions. [2021-10-07 16:04:57,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 16:04:57,158 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:04:57,158 INFO L512 BasicCegarLoop]: trace histogram [1, 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 16:04:57,174 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 16:04:57,371 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 16:04:57,372 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-07 16:04:57,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:04:57,373 INFO L82 PathProgramCache]: Analyzing trace with hash -996283996, now seen corresponding path program 1 times [2021-10-07 16:04:57,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:04:57,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480132424] [2021-10-07 16:04:57,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:04:57,375 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:04:57,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:04:57,376 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 16:04:57,377 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 16:04:57,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:04:57,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 16:04:57,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:04:57,809 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 16:04:57,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:04:57,899 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 16:04:57,899 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:04:57,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480132424] [2021-10-07 16:04:57,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [480132424] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:04:57,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:04:57,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-07 16:04:57,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418444522] [2021-10-07 16:04:57,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:04:57,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:04:57,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:04:57,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:04:57,901 INFO L87 Difference]: Start difference. First operand 700 states and 2446 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 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 16:04:58,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:04:58,001 INFO L93 Difference]: Finished difference Result 750 states and 2616 transitions. [2021-10-07 16:04:58,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:04:58,002 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 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 23 [2021-10-07 16:04:58,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:04:58,004 INFO L225 Difference]: With dead ends: 750 [2021-10-07 16:04:58,004 INFO L226 Difference]: Without dead ends: 700 [2021-10-07 16:04:58,004 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 37.5ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:04:58,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2021-10-07 16:04:58,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 618. [2021-10-07 16:04:58,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 615 states have (on average 3.5365853658536586) internal successors, (2175), 617 states have internal predecessors, (2175), 0 states have call successors, (0), 0 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 16:04:58,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 2175 transitions. [2021-10-07 16:04:58,016 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 2175 transitions. Word has length 23 [2021-10-07 16:04:58,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:04:58,016 INFO L470 AbstractCegarLoop]: Abstraction has 618 states and 2175 transitions. [2021-10-07 16:04:58,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 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 16:04:58,017 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 2175 transitions. [2021-10-07 16:04:58,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 16:04:58,019 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:04:58,019 INFO L512 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2021-10-07 16:04:58,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-10-07 16:04:58,219 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 16:04:58,220 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 38 more)] === [2021-10-07 16:04:58,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:04:58,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1200436385, now seen corresponding path program 2 times [2021-10-07 16:04:58,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:04:58,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24414345] [2021-10-07 16:04:58,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:04:58,222 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:04:58,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:04:58,223 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 16:04:58,224 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 16:04:58,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:04:58,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:04:58,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-07 16:04:58,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:04:58,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-07 16:05:00,682 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:05:00,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:05:19,699 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:05:19,700 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:05:19,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24414345] [2021-10-07 16:05:19,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24414345] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:05:19,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:05:19,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2021-10-07 16:05:19,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029746368] [2021-10-07 16:05:19,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-10-07 16:05:19,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:05:19,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-10-07 16:05:19,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2021-10-07 16:05:19,702 INFO L87 Difference]: Start difference. First operand 618 states and 2175 transitions. Second operand has 48 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 48 states have internal predecessors, (49), 0 states have call successors, (0), 0 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 16:06:14,570 WARN L207 SmtUtils]: Spent 38.83 s on a formula simplification that was a NOOP. DAG size: 254 [2021-10-07 16:07:33,460 WARN L207 SmtUtils]: Spent 30.19 s on a formula simplification that was a NOOP. DAG size: 243 [2021-10-07 16:08:05,058 WARN L207 SmtUtils]: Spent 28.58 s on a formula simplification that was a NOOP. DAG size: 232 [2021-10-07 16:08:28,229 WARN L207 SmtUtils]: Spent 20.29 s on a formula simplification that was a NOOP. DAG size: 222 [2021-10-07 16:08:53,935 WARN L207 SmtUtils]: Spent 23.26 s on a formula simplification that was a NOOP. DAG size: 211 Received shutdown request... [2021-10-07 16:09:11,089 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 16:09:11,089 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 16:09:11,612 WARN L223 SmtUtils]: Removed 11 from assertion stack [2021-10-07 16:09:11,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 16:09:11,614 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 16:09:11,628 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 16:09:11,814 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 16:09:11,815 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. [2021-10-07 16:09:11,818 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-07 16:09:11,818 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-07 16:09:11,818 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-07 16:09:11,819 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-07 16:09:11,819 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-07 16:09:11,819 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-07 16:09:11,819 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 16:09:11,819 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 16:09:11,819 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 16:09:11,819 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 16:09:11,819 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 16:09:11,819 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 16:09:11,820 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 16:09:11,820 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-07 16:09:11,820 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-07 16:09:11,820 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-07 16:09:11,820 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-07 16:09:11,820 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-07 16:09:11,820 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-07 16:09:11,820 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-07 16:09:11,820 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-07 16:09:11,821 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-07 16:09:11,821 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-07 16:09:11,821 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-07 16:09:11,821 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-10-07 16:09:11,821 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:09:11,821 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:09:11,821 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 16:09:11,822 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 16:09:11,822 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-07 16:09:11,822 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-07 16:09:11,822 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err0REQUIRES_VIOLATION [2021-10-07 16:09:11,822 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err1REQUIRES_VIOLATION [2021-10-07 16:09:11,822 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-07 16:09:11,822 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-07 16:09:11,823 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-07 16:09:11,823 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-07 16:09:11,823 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-07 16:09:11,823 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-07 16:09:11,823 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err0REQUIRES_VIOLATION [2021-10-07 16:09:11,823 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err1REQUIRES_VIOLATION [2021-10-07 16:09:11,830 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 16:09:11,830 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 16:09:11,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 04:09:11 BasicIcfg [2021-10-07 16:09:11,832 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 16:09:11,833 INFO L168 Benchmark]: Toolchain (without parser) took 830774.62 ms. Allocated memory was 156.2 MB in the beginning and 325.1 MB in the end (delta: 168.8 MB). Free memory was 131.5 MB in the beginning and 91.1 MB in the end (delta: 40.4 MB). Peak memory consumption was 209.5 MB. Max. memory is 8.0 GB. [2021-10-07 16:09:11,833 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 156.2 MB. Free memory is still 131.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 16:09:11,834 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.67 ms. Allocated memory is still 156.2 MB. Free memory was 131.2 MB in the beginning and 116.7 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-10-07 16:09:11,834 INFO L168 Benchmark]: Boogie Procedure Inliner took 120.51 ms. Allocated memory is still 156.2 MB. Free memory was 116.7 MB in the beginning and 114.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 16:09:11,834 INFO L168 Benchmark]: Boogie Preprocessor took 104.75 ms. Allocated memory is still 156.2 MB. Free memory was 114.4 MB in the beginning and 112.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 16:09:11,835 INFO L168 Benchmark]: RCFGBuilder took 1740.77 ms. Allocated memory is still 156.2 MB. Free memory was 112.3 MB in the beginning and 103.6 MB in the end (delta: 8.6 MB). Peak memory consumption was 12.9 MB. Max. memory is 8.0 GB. [2021-10-07 16:09:11,835 INFO L168 Benchmark]: TraceAbstraction took 828369.54 ms. Allocated memory was 156.2 MB in the beginning and 325.1 MB in the end (delta: 168.8 MB). Free memory was 103.1 MB in the beginning and 91.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 180.9 MB. Max. memory is 8.0 GB. [2021-10-07 16:09:11,837 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 156.2 MB. Free memory is still 131.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 421.67 ms. Allocated memory is still 156.2 MB. Free memory was 131.2 MB in the beginning and 116.7 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 120.51 ms. Allocated memory is still 156.2 MB. Free memory was 116.7 MB in the beginning and 114.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 104.75 ms. Allocated memory is still 156.2 MB. Free memory was 114.4 MB in the beginning and 112.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1740.77 ms. Allocated memory is still 156.2 MB. Free memory was 112.3 MB in the beginning and 103.6 MB in the end (delta: 8.6 MB). Peak memory consumption was 12.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 828369.54 ms. Allocated memory was 156.2 MB in the beginning and 325.1 MB in the end (delta: 168.8 MB). Free memory was 103.1 MB in the beginning and 91.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 180.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 39152.6ms, 231 PlacesBefore, 74 PlacesAfterwards, 236 TransitionsBefore, 67 TransitionsAfterwards, 2972 CoEnabledTransitionPairs, 8 FixpointIterations, 144 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 18 TrivialYvCompositions, 8 ConcurrentYvCompositions, 12 ChoiceCompositions, 241 TotalNumberOfCompositions, 6981 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5006, positive: 4872, positive conditional: 0, positive unconditional: 4872, negative: 134, negative conditional: 0, negative unconditional: 134, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1900, positive: 1869, positive conditional: 0, positive unconditional: 1869, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1900, positive: 1861, positive conditional: 0, positive unconditional: 1861, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 39, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2795, positive: 1148, positive conditional: 0, positive unconditional: 1148, negative: 1648, negative conditional: 0, negative unconditional: 1648, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 5006, positive: 3003, positive conditional: 0, positive unconditional: 3003, negative: 103, negative conditional: 0, negative unconditional: 103, unknown: 1900, unknown conditional: 0, unknown unconditional: 1900] , Statistics on independence cache: Total cache size (in pairs): 328, Positive cache size: 317, Positive conditional cache size: 0, Positive unconditional cache size: 317, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - 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: 135]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 135]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 135]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 135]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 115]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 115]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 117]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 117]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 119]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 119]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 124]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 117]: 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 (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 114]: 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 (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 115]: 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 (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 116]: 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 (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (618states) and FLOYD_HOARE automaton (currently 30 states, 48 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 200 for 14528ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 257 locations, 42 error locations. Started 1 CEGAR loops. OverallTime: 828210.2ms, OverallIterations: 24, TraceHistogramMax: 22, EmptinessCheckTime: 54.3ms, AutomataDifference: 487170.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 39400.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1516 SDtfs, 21138 SDslu, 14246 SDs, 0 SdLazy, 14810 SolverSat, 1976 SolverUnsat, 68 SolverUnknown, 0 SolverNotchecked, 203774.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 407 GetRequests, 160 SyntacticMatches, 11 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 299564.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3837occurred in iteration=9, InterpolantAutomatonStates: 170, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 3874.9ms AutomataMinimizationTime, 23 MinimizatonAttempts, 52008 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 274.9ms SsaConstructionTime, 1673.0ms SatisfiabilityAnalysisTime, 287752.0ms InterpolantComputationTime, 200 NumberOfCodeBlocks, 192 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 352 ConstructedInterpolants, 78 QuantifiedInterpolants, 9789 SizeOfPredicates, 196 NumberOfNonLiveVariables, 2186 ConjunctsInSsa, 268 ConjunctsInUnsatCore, 48 InterpolantComputations, 34 PerfectInterpolantSequences, 42/920 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