/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/array-eq-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 16:35:18,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 16:35:18,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 16:35:18,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 16:35:18,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-08 16:35:18,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-08 16:35:18,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-08 16:35:18,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-08 16:35:18,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-08 16:35:18,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-08 16:35:18,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-08 16:35:18,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-08 16:35:18,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-08 16:35:18,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-08 16:35:18,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-08 16:35:18,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-08 16:35:18,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-08 16:35:18,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-08 16:35:18,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-08 16:35:18,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-08 16:35:18,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-08 16:35:18,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-08 16:35:18,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-08 16:35:18,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-08 16:35:18,532 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-08 16:35:18,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 16:35:18,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 16:35:18,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 16:35:18,539 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-08 16:35:18,594 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 16:35:18,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 16:35:18,595 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 16:35:18,595 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 16:35:18,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 16:35:18,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 16:35:18,600 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 16:35:18,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 16:35:18,604 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 16:35:18,604 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 16:35:18,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 16:35:18,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 16:35:18,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 16:35:18,605 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-08 16:35:18,605 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-08 16:35:18,606 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-08 16:35:18,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 16:35:18,606 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-08 16:35:18,606 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-08 16:35:18,606 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-08 16:35:18,607 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 16:35:18,607 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 16:35:18,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 16:35:18,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 16:35:18,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 16:35:18,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:35:18,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 16:35:18,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 16:35:18,608 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-08 16:35:18,609 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-08 16:35:18,609 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 16:35:18,609 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-08 16:35:18,609 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 16:35:19,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 16:35:19,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 16:35:19,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 16:35:19,116 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 16:35:19,117 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 16:35:19,118 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2021-10-08 16:35:19,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16d4c3141/9f17b0a1d9884f7fb6701a0f9060c574/FLAG973e87e03 [2021-10-08 16:35:19,990 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 16:35:19,991 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2021-10-08 16:35:20,001 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16d4c3141/9f17b0a1d9884f7fb6701a0f9060c574/FLAG973e87e03 [2021-10-08 16:35:20,297 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16d4c3141/9f17b0a1d9884f7fb6701a0f9060c574 [2021-10-08 16:35:20,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 16:35:20,309 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-08 16:35:20,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 16:35:20,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 16:35:20,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 16:35:20,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:35:20" (1/1) ... [2021-10-08 16:35:20,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16f7beb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:20, skipping insertion in model container [2021-10-08 16:35:20,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:35:20" (1/1) ... [2021-10-08 16:35:20,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 16:35:20,348 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 16:35:20,625 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/array-eq-trans.wvr.c[2737,2750] [2021-10-08 16:35:20,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:35:20,652 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-08 16:35:20,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 16:35:20,682 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/array-eq-trans.wvr.c[2737,2750] [2021-10-08 16:35:20,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:35:20,694 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 16:35:20,737 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/array-eq-trans.wvr.c[2737,2750] [2021-10-08 16:35:20,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:35:20,792 INFO L208 MainTranslator]: Completed translation [2021-10-08 16:35:20,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:20 WrapperNode [2021-10-08 16:35:20,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 16:35:20,795 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 16:35:20,795 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 16:35:20,795 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 16:35:20,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:20" (1/1) ... [2021-10-08 16:35:20,843 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:20" (1/1) ... [2021-10-08 16:35:20,907 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 16:35:20,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 16:35:20,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 16:35:20,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 16:35:20,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:20" (1/1) ... [2021-10-08 16:35:20,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:20" (1/1) ... [2021-10-08 16:35:20,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:20" (1/1) ... [2021-10-08 16:35:20,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:20" (1/1) ... [2021-10-08 16:35:20,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:20" (1/1) ... [2021-10-08 16:35:20,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:20" (1/1) ... [2021-10-08 16:35:21,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:20" (1/1) ... [2021-10-08 16:35:21,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 16:35:21,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 16:35:21,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 16:35:21,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 16:35:21,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:20" (1/1) ... [2021-10-08 16:35:21,032 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:35:21,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:35:21,068 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) [2021-10-08 16:35:21,097 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 [2021-10-08 16:35:21,163 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 16:35:21,163 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 16:35:21,163 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 16:35:21,163 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 16:35:21,163 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-08 16:35:21,164 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-08 16:35:21,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-08 16:35:21,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 16:35:21,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-08 16:35:21,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-08 16:35:21,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 16:35:21,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 16:35:21,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 16:35:21,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-08 16:35:21,170 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 16:35:22,613 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 16:35:22,613 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2021-10-08 16:35:22,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:35:22 BoogieIcfgContainer [2021-10-08 16:35:22,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 16:35:22,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 16:35:22,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 16:35:22,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 16:35:22,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 04:35:20" (1/3) ... [2021-10-08 16:35:22,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bcef6fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:35:22, skipping insertion in model container [2021-10-08 16:35:22,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:20" (2/3) ... [2021-10-08 16:35:22,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bcef6fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:35:22, skipping insertion in model container [2021-10-08 16:35:22,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:35:22" (3/3) ... [2021-10-08 16:35:22,636 INFO L111 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2021-10-08 16:35:22,644 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 16:35:22,644 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2021-10-08 16:35:22,644 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 16:35:22,778 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,779 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,779 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,779 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,779 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,780 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,780 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,781 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,784 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,784 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,785 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,785 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,785 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,785 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,785 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,786 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,787 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,788 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,788 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,788 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,788 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,788 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,789 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,789 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,789 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,789 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,789 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,790 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,795 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,796 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,796 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,797 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,797 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,797 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,802 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,803 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,803 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,804 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,806 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,807 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,807 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,807 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,807 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,807 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,808 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,812 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,813 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,813 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,813 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,813 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,813 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,814 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,814 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,814 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,814 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,814 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,814 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,815 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,815 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,815 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,816 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,816 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,816 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,816 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,816 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,818 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,819 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,819 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,819 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,820 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,821 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,821 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,821 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,821 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,821 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,822 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,822 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,822 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,822 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,822 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,822 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,823 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,823 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,824 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,824 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,824 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,824 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,825 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,825 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,825 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,833 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,834 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,835 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,835 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,835 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,845 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,845 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,846 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,846 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,846 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,859 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,860 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,860 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,860 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,860 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,885 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-08 16:35:23,049 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 16:35:23,069 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 [2021-10-08 16:35:23,069 INFO L340 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2021-10-08 16:35:23,128 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 16:35:23,159 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 298 places, 318 transitions, 660 flow [2021-10-08 16:35:23,166 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 298 places, 318 transitions, 660 flow [2021-10-08 16:35:23,171 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 298 places, 318 transitions, 660 flow [2021-10-08 16:35:23,381 INFO L129 PetriNetUnfolder]: 30/315 cut-off events. [2021-10-08 16:35:23,382 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-08 16:35:23,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 315 events. 30/315 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 478 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 195. Up to 3 conditions per place. [2021-10-08 16:35:23,396 INFO L116 LiptonReduction]: Number of co-enabled transitions 4560 [2021-10-08 16:37:30,868 INFO L131 LiptonReduction]: Checked pairs total: 7628 [2021-10-08 16:37:30,868 INFO L133 LiptonReduction]: Total number of compositions: 403 [2021-10-08 16:37:30,883 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 76 transitions, 176 flow [2021-10-08 16:37:30,980 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1620 states, 1104 states have (on average 5.486413043478261) internal successors, (6057), 1619 states have internal predecessors, (6057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:30,989 INFO L276 IsEmpty]: Start isEmpty. Operand has 1620 states, 1104 states have (on average 5.486413043478261) internal successors, (6057), 1619 states have internal predecessors, (6057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:30,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 16:37:30,995 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:30,996 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 16:37:30,996 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 55 more)] === [2021-10-08 16:37:31,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:31,003 INFO L82 PathProgramCache]: Analyzing trace with hash 39672, now seen corresponding path program 1 times [2021-10-08 16:37:31,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:31,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2144906984] [2021-10-08 16:37:31,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:37:31,019 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:31,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:31,023 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) [2021-10-08 16:37:31,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-08 16:37:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:37:31,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:37:31,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:31,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:37:31,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:37:31,740 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 16:37:31,741 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 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 16:37:31,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:31,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:31,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:31,945 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:31,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2144906984] [2021-10-08 16:37:31,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2144906984] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:37:31,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:37:31,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 16:37:31,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697486489] [2021-10-08 16:37:31,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:37:31,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:31,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:37:31,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:37:31,977 INFO L87 Difference]: Start difference. First operand has 1620 states, 1104 states have (on average 5.486413043478261) internal successors, (6057), 1619 states have internal predecessors, (6057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:33,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:33,930 INFO L93 Difference]: Finished difference Result 3240 states and 12119 transitions. [2021-10-08 16:37:33,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:37:33,932 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 [2021-10-08 16:37:33,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:34,001 INFO L225 Difference]: With dead ends: 3240 [2021-10-08 16:37:34,002 INFO L226 Difference]: Without dead ends: 3240 [2021-10-08 16:37:34,003 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 84.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:37:34,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3240 states. [2021-10-08 16:37:34,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3240 to 1625. [2021-10-08 16:37:34,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1625 states, 1110 states have (on average 5.475675675675675) internal successors, (6078), 1624 states have internal predecessors, (6078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:34,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 6078 transitions. [2021-10-08 16:37:34,199 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 6078 transitions. Word has length 2 [2021-10-08 16:37:34,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:34,200 INFO L470 AbstractCegarLoop]: Abstraction has 1625 states and 6078 transitions. [2021-10-08 16:37:34,200 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) [2021-10-08 16:37:34,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 6078 transitions. [2021-10-08 16:37:34,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 16:37:34,201 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:34,201 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 16:37:34,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-08 16:37:34,414 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 [2021-10-08 16:37:34,415 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 55 more)] === [2021-10-08 16:37:34,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:34,416 INFO L82 PathProgramCache]: Analyzing trace with hash 39673, now seen corresponding path program 1 times [2021-10-08 16:37:34,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:34,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909889045] [2021-10-08 16:37:34,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:37:34,417 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:34,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:34,419 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) [2021-10-08 16:37:34,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-08 16:37:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:37:34,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 16:37:34,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:34,750 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-08 16:37:34,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-08 16:37:35,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:35,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:35,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:35,424 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:35,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909889045] [2021-10-08 16:37:35,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1909889045] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:37:35,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:37:35,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 16:37:35,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644829069] [2021-10-08 16:37:35,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:37:35,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:35,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:37:35,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:37:35,428 INFO L87 Difference]: Start difference. First operand 1625 states and 6078 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:36,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:36,154 INFO L93 Difference]: Finished difference Result 1622 states and 6069 transitions. [2021-10-08 16:37:36,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:37:36,156 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 [2021-10-08 16:37:36,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:36,177 INFO L225 Difference]: With dead ends: 1622 [2021-10-08 16:37:36,178 INFO L226 Difference]: Without dead ends: 1622 [2021-10-08 16:37:36,178 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:37:36,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2021-10-08 16:37:36,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1622. [2021-10-08 16:37:36,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1110 states have (on average 5.467567567567568) internal successors, (6069), 1621 states have internal predecessors, (6069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:36,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 6069 transitions. [2021-10-08 16:37:36,265 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 6069 transitions. Word has length 2 [2021-10-08 16:37:36,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:36,265 INFO L470 AbstractCegarLoop]: Abstraction has 1622 states and 6069 transitions. [2021-10-08 16:37:36,266 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) [2021-10-08 16:37:36,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 6069 transitions. [2021-10-08 16:37:36,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 16:37:36,266 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:36,267 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-08 16:37:36,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:36,484 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 [2021-10-08 16:37:36,485 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 55 more)] === [2021-10-08 16:37:36,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:36,486 INFO L82 PathProgramCache]: Analyzing trace with hash 38326904, now seen corresponding path program 1 times [2021-10-08 16:37:36,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:36,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [257398330] [2021-10-08 16:37:36,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:37:36,488 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:36,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:36,490 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) [2021-10-08 16:37:36,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-08 16:37:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:37:36,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:37:36,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:36,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:37:36,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:37:36,935 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 16:37:36,935 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 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 16:37:37,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:37,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:37,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:37,761 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:37,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [257398330] [2021-10-08 16:37:37,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [257398330] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:37,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:37,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 16:37:37,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938871456] [2021-10-08 16:37:37,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:37:37,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:37,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:37:37,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:37:37,764 INFO L87 Difference]: Start difference. First operand 1622 states and 6069 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) [2021-10-08 16:37:51,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:51,657 INFO L93 Difference]: Finished difference Result 9679 states and 36306 transitions. [2021-10-08 16:37:51,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 16:37:51,660 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 [2021-10-08 16:37:51,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:51,851 INFO L225 Difference]: With dead ends: 9679 [2021-10-08 16:37:51,851 INFO L226 Difference]: Without dead ends: 9679 [2021-10-08 16:37:51,852 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1051.5ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:37:51,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9679 states. [2021-10-08 16:37:52,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9679 to 1634. [2021-10-08 16:37:52,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1122 states have (on average 5.437611408199643) internal successors, (6101), 1633 states have internal predecessors, (6101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:52,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 6101 transitions. [2021-10-08 16:37:52,124 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 6101 transitions. Word has length 4 [2021-10-08 16:37:52,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:52,125 INFO L470 AbstractCegarLoop]: Abstraction has 1634 states and 6101 transitions. [2021-10-08 16:37:52,125 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) [2021-10-08 16:37:52,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 6101 transitions. [2021-10-08 16:37:52,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 16:37:52,126 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:52,129 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-08 16:37:52,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:52,342 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 [2021-10-08 16:37:52,342 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 55 more)] === [2021-10-08 16:37:52,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:52,344 INFO L82 PathProgramCache]: Analyzing trace with hash 38414114, now seen corresponding path program 1 times [2021-10-08 16:37:52,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:52,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1665907753] [2021-10-08 16:37:52,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:37:52,346 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:52,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:52,347 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) [2021-10-08 16:37:52,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-08 16:37:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:37:52,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:37:52,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:52,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:37:52,741 INFO L354 Elim1Store]: treesize reduction 333, result has 15.7 percent of original size [2021-10-08 16:37:52,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 9 case distinctions, treesize of input 289 treesize of output 321 [2021-10-08 16:38:02,018 INFO L354 Elim1Store]: treesize reduction 186, result has 38.4 percent of original size [2021-10-08 16:38:02,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 119 treesize of output 219 [2021-10-08 16:38:34,917 INFO L354 Elim1Store]: treesize reduction 297, result has 21.2 percent of original size [2021-10-08 16:38:34,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 269 treesize of output 331 [2021-10-08 16:39:21,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:21,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:39:21,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:21,421 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:39:21,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1665907753] [2021-10-08 16:39:21,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1665907753] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:39:21,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:39:21,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 5 [2021-10-08 16:39:21,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247596357] [2021-10-08 16:39:21,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 16:39:21,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:39:21,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 16:39:21,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=20, Unknown=4, NotChecked=0, Total=42 [2021-10-08 16:39:21,425 INFO L87 Difference]: Start difference. First operand 1634 states and 6101 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) [2021-10-08 16:39:33,526 WARN L207 SmtUtils]: Spent 11.69 s on a formula simplification. DAG size of input: 228 DAG size of output: 217 [2021-10-08 16:40:13,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:40:13,922 INFO L93 Difference]: Finished difference Result 1339 states and 4834 transitions. [2021-10-08 16:40:13,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:40:13,926 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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 [2021-10-08 16:40:13,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:40:13,932 INFO L225 Difference]: With dead ends: 1339 [2021-10-08 16:40:13,933 INFO L226 Difference]: Without dead ends: 1339 [2021-10-08 16:40:13,933 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42941.6ms TimeCoverageRelationStatistics Valid=38, Invalid=41, Unknown=11, NotChecked=0, Total=90 [2021-10-08 16:40:13,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2021-10-08 16:40:13,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1339. [2021-10-08 16:40:13,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 953 states have (on average 5.072402938090241) internal successors, (4834), 1338 states have internal predecessors, (4834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:13,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 4834 transitions. [2021-10-08 16:40:13,988 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 4834 transitions. Word has length 4 [2021-10-08 16:40:13,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:40:13,989 INFO L470 AbstractCegarLoop]: Abstraction has 1339 states and 4834 transitions. [2021-10-08 16:40:13,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) [2021-10-08 16:40:13,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 4834 transitions. [2021-10-08 16:40:13,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 16:40:13,990 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:40:13,990 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-08 16:40:14,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-08 16:40:14,191 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 [2021-10-08 16:40:14,191 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 55 more)] === [2021-10-08 16:40:14,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:40:14,194 INFO L82 PathProgramCache]: Analyzing trace with hash 38414115, now seen corresponding path program 1 times [2021-10-08 16:40:14,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:40:14,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524862921] [2021-10-08 16:40:14,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:40:14,195 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:40:14,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:40:14,196 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) [2021-10-08 16:40:14,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-08 16:40:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:40:14,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 16:40:14,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:40:14,764 INFO L354 Elim1Store]: treesize reduction 245, result has 17.2 percent of original size [2021-10-08 16:40:14,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 92 treesize of output 126 [2021-10-08 16:40:14,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:40:15,096 INFO L354 Elim1Store]: treesize reduction 333, result has 15.7 percent of original size [2021-10-08 16:40:15,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 9 case distinctions, treesize of input 196 treesize of output 234 [2021-10-08 16:40:33,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:40:33,568 INFO L354 Elim1Store]: treesize reduction 96, result has 46.1 percent of original size [2021-10-08 16:40:33,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 124 treesize of output 192 [2021-10-08 16:40:33,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:40:33,809 INFO L354 Elim1Store]: treesize reduction 90, result has 46.4 percent of original size [2021-10-08 16:40:33,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 192 treesize of output 258 [2021-10-08 16:43:48,088 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:43:48,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524862921] [2021-10-08 16:43:48,089 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-10-08 16:43:48,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1767929311] [2021-10-08 16:43:48,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:43:48,089 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-08 16:43:48,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 [2021-10-08 16:43:48,091 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-08 16:43:48,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-10-08 16:43:48,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:43:48,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:43:48,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:43:48,727 INFO L354 Elim1Store]: treesize reduction 245, result has 17.2 percent of original size [2021-10-08 16:43:48,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 68 treesize of output 102 [2021-10-08 16:43:48,741 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-08 16:43:48,741 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 151 treesize of output 147 [2021-10-08 16:43:53,991 INFO L354 Elim1Store]: treesize reduction 84, result has 36.8 percent of original size [2021-10-08 16:43:53,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 96 [2021-10-08 16:44:09,595 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-10-08 16:44:09,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679823391] [2021-10-08 16:44:09,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:44:09,596 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:44:09,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:44:09,599 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:44:09,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-08 16:44:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:44:09,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 16:44:09,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:44:10,199 INFO L354 Elim1Store]: treesize reduction 259, result has 12.5 percent of original size [2021-10-08 16:44:10,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 117 treesize of output 137 [2021-10-08 16:44:10,464 INFO L354 Elim1Store]: treesize reduction 374, result has 14.8 percent of original size [2021-10-08 16:44:10,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 11 case distinctions, treesize of input 448 treesize of output 479 [2021-10-08 16:44:15,707 INFO L354 Elim1Store]: treesize reduction 156, result has 16.1 percent of original size [2021-10-08 16:44:15,708 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 132 treesize of output 148 [2021-10-08 16:44:15,908 INFO L354 Elim1Store]: treesize reduction 144, result has 33.3 percent of original size [2021-10-08 16:44:15,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 136 treesize of output 194 [2021-10-08 16:44:28,424 INFO L354 Elim1Store]: treesize reduction 212, result has 14.2 percent of original size [2021-10-08 16:44:28,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 198 treesize of output 217 [2021-10-08 16:44:28,702 INFO L354 Elim1Store]: treesize reduction 82, result has 51.5 percent of original size [2021-10-08 16:44:28,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 202 treesize of output 274 [2021-10-08 16:46:25,958 WARN L207 SmtUtils]: Spent 27.70 s on a formula simplification. DAG size of input: 103 DAG size of output: 80 [2021-10-08 16:46:25,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:46:25,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:46:28,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:46:28,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679823391] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:46:28,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:46:28,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-08 16:46:28,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776673782] [2021-10-08 16:46:28,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:46:28,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:46:28,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:46:28,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=85, Unknown=8, NotChecked=0, Total=132 [2021-10-08 16:46:28,585 INFO L87 Difference]: Start difference. First operand 1339 states and 4834 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) [2021-10-08 16:46:50,497 WARN L228 Executor]: External (MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-08 16:46:50,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2021-10-08 16:46:50,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:46:50,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-10-08 16:46:50,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-08 16:46:50,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-08 16:46:51,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:46:51,101 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:241) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:260) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:626) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:174) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:140) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:388) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:864) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:778) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:237) ... 56 more [2021-10-08 16:46:51,106 INFO L168 Benchmark]: Toolchain (without parser) took 690804.04 ms. Allocated memory was 157.3 MB in the beginning and 202.4 MB in the end (delta: 45.1 MB). Free memory was 133.1 MB in the beginning and 41.1 MB in the end (delta: 92.0 MB). Peak memory consumption was 138.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:46:51,106 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 157.3 MB. Free memory is still 133.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 16:46:51,107 INFO L168 Benchmark]: CACSL2BoogieTranslator took 482.60 ms. Allocated memory is still 157.3 MB. Free memory was 132.7 MB in the beginning and 118.4 MB in the end (delta: 14.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-10-08 16:46:51,107 INFO L168 Benchmark]: Boogie Procedure Inliner took 112.79 ms. Allocated memory is still 157.3 MB. Free memory was 118.4 MB in the beginning and 116.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:46:51,108 INFO L168 Benchmark]: Boogie Preprocessor took 107.70 ms. Allocated memory is still 157.3 MB. Free memory was 116.3 MB in the beginning and 114.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:46:51,108 INFO L168 Benchmark]: RCFGBuilder took 1600.71 ms. Allocated memory is still 157.3 MB. Free memory was 114.0 MB in the beginning and 119.8 MB in the end (delta: -5.8 MB). Peak memory consumption was 13.0 MB. Max. memory is 8.0 GB. [2021-10-08 16:46:51,109 INFO L168 Benchmark]: TraceAbstraction took 688476.74 ms. Allocated memory was 157.3 MB in the beginning and 202.4 MB in the end (delta: 45.1 MB). Free memory was 119.3 MB in the beginning and 41.1 MB in the end (delta: 78.2 MB). Peak memory consumption was 124.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:46:51,111 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 157.3 MB. Free memory is still 133.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 482.60 ms. Allocated memory is still 157.3 MB. Free memory was 132.7 MB in the beginning and 118.4 MB in the end (delta: 14.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 112.79 ms. Allocated memory is still 157.3 MB. Free memory was 118.4 MB in the beginning and 116.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 107.70 ms. Allocated memory is still 157.3 MB. Free memory was 116.3 MB in the beginning and 114.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1600.71 ms. Allocated memory is still 157.3 MB. Free memory was 114.0 MB in the beginning and 119.8 MB in the end (delta: -5.8 MB). Peak memory consumption was 13.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 688476.74 ms. Allocated memory was 157.3 MB in the beginning and 202.4 MB in the end (delta: 45.1 MB). Free memory was 119.3 MB in the beginning and 41.1 MB in the end (delta: 78.2 MB). Peak memory consumption was 124.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 127702.6ms, 298 PlacesBefore, 78 PlacesAfterwards, 318 TransitionsBefore, 76 TransitionsAfterwards, 4560 CoEnabledTransitionPairs, 8 FixpointIterations, 226 TrivialSequentialCompositions, 77 ConcurrentSequentialCompositions, 64 TrivialYvCompositions, 14 ConcurrentYvCompositions, 22 ChoiceCompositions, 403 TotalNumberOfCompositions, 7628 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6159, positive: 6055, positive conditional: 0, positive unconditional: 6055, negative: 104, negative conditional: 0, negative unconditional: 104, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3198, positive: 3167, positive conditional: 0, positive unconditional: 3167, 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: 3198, positive: 3167, positive conditional: 0, positive unconditional: 3167, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 31, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2003, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2003, negative conditional: 0, negative unconditional: 2003, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6159, positive: 2888, positive conditional: 0, positive unconditional: 2888, negative: 73, negative conditional: 0, negative unconditional: 73, unknown: 3198, unknown conditional: 0, unknown unconditional: 3198] , Statistics on independence cache: Total cache size (in pairs): 250, Positive cache size: 243, Positive conditional cache size: 0, Positive unconditional cache size: 243, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:241) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...