/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-lit/fkp2013_variant-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-29 01:00:36,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-29 01:00:36,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-29 01:00:36,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-29 01:00:36,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-29 01:00:36,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-29 01:00:36,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-29 01:00:36,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-29 01:00:36,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-29 01:00:36,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-29 01:00:36,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-29 01:00:36,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-29 01:00:36,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-29 01:00:36,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-29 01:00:36,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-29 01:00:36,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-29 01:00:36,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-29 01:00:36,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-29 01:00:36,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-29 01:00:36,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-29 01:00:36,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-29 01:00:36,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-29 01:00:36,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-29 01:00:36,373 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-29 01:00:36,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-29 01:00:36,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-29 01:00:36,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-29 01:00:36,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-29 01:00:36,378 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf [2021-04-29 01:00:36,405 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-29 01:00:36,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-29 01:00:36,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-29 01:00:36,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-29 01:00:36,408 INFO L138 SettingsManager]: * Use SBE=true [2021-04-29 01:00:36,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-29 01:00:36,408 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-29 01:00:36,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-29 01:00:36,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-29 01:00:36,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-29 01:00:36,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-29 01:00:36,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-29 01:00:36,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-29 01:00:36,410 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-29 01:00:36,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-29 01:00:36,411 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-29 01:00:36,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-29 01:00:36,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-29 01:00:36,412 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-29 01:00:36,412 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-29 01:00:36,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-29 01:00:36,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 01:00:36,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-29 01:00:36,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-29 01:00:36,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-29 01:00:36,414 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-29 01:00:36,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-29 01:00:36,414 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-29 01:00:36,414 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-29 01:00:36,415 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-29 01:00:36,415 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-29 01:00:36,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-29 01:00:36,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-29 01:00:36,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-29 01:00:36,817 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-29 01:00:36,818 INFO L275 PluginConnector]: CDTParser initialized [2021-04-29 01:00:36,819 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/fkp2013_variant-2.i [2021-04-29 01:00:36,899 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be98fdb3b/5bddaf74aba9405785bedb4f08074910/FLAG5d6bd1c80 [2021-04-29 01:00:37,666 INFO L306 CDTParser]: Found 1 translation units. [2021-04-29 01:00:37,667 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2013_variant-2.i [2021-04-29 01:00:37,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be98fdb3b/5bddaf74aba9405785bedb4f08074910/FLAG5d6bd1c80 [2021-04-29 01:00:37,938 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be98fdb3b/5bddaf74aba9405785bedb4f08074910 [2021-04-29 01:00:37,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-29 01:00:38,002 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-29 01:00:38,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-29 01:00:38,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-29 01:00:38,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-29 01:00:38,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 01:00:37" (1/1) ... [2021-04-29 01:00:38,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11ac466e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 01:00:38, skipping insertion in model container [2021-04-29 01:00:38,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 01:00:37" (1/1) ... [2021-04-29 01:00:38,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-29 01:00:38,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-29 01:00:38,513 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2013_variant-2.i[30003,30016] [2021-04-29 01:00:38,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-29 01:00:38,550 INFO L203 MainTranslator]: Completed pre-run [2021-04-29 01:00:38,593 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2013_variant-2.i[30003,30016] [2021-04-29 01:00:38,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-29 01:00:38,701 INFO L208 MainTranslator]: Completed translation [2021-04-29 01:00:38,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 01:00:38 WrapperNode [2021-04-29 01:00:38,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-29 01:00:38,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-29 01:00:38,704 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-29 01:00:38,704 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-29 01:00:38,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 01:00:38" (1/1) ... [2021-04-29 01:00:38,730 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 01:00:38" (1/1) ... [2021-04-29 01:00:38,754 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-29 01:00:38,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-29 01:00:38,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-29 01:00:38,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-29 01:00:38,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 01:00:38" (1/1) ... [2021-04-29 01:00:38,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 01:00:38" (1/1) ... [2021-04-29 01:00:38,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 01:00:38" (1/1) ... [2021-04-29 01:00:38,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 01:00:38" (1/1) ... [2021-04-29 01:00:38,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 01:00:38" (1/1) ... [2021-04-29 01:00:38,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 01:00:38" (1/1) ... [2021-04-29 01:00:38,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 01:00:38" (1/1) ... [2021-04-29 01:00:38,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-29 01:00:38,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-29 01:00:38,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-29 01:00:38,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-29 01:00:38,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 01:00:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 01:00:38,951 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-04-29 01:00:38,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-04-29 01:00:38,953 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-04-29 01:00:38,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-04-29 01:00:38,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-29 01:00:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-29 01:00:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-29 01:00:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-29 01:00:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-29 01:00:38,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-29 01:00:38,957 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-29 01:00:39,315 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-29 01:00:39,315 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-04-29 01:00:39,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 01:00:39 BoogieIcfgContainer [2021-04-29 01:00:39,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-29 01:00:39,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-29 01:00:39,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-29 01:00:39,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-29 01:00:39,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 01:00:37" (1/3) ... [2021-04-29 01:00:39,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c118ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 01:00:39, skipping insertion in model container [2021-04-29 01:00:39,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 01:00:38" (2/3) ... [2021-04-29 01:00:39,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c118ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 01:00:39, skipping insertion in model container [2021-04-29 01:00:39,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 01:00:39" (3/3) ... [2021-04-29 01:00:39,337 INFO L111 eAbstractionObserver]: Analyzing ICFG fkp2013_variant-2.i [2021-04-29 01:00:39,345 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-29 01:00:39,350 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-29 01:00:39,352 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-29 01:00:39,412 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,413 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,413 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,413 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,414 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,415 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,415 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,415 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,416 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,416 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,417 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,417 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,417 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,418 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,420 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,420 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,420 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,421 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,422 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,422 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,423 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,423 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,424 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,424 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,424 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,424 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,425 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,425 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,426 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,426 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,427 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,427 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,427 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,427 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,428 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,428 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,428 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,429 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,430 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,430 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,431 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,431 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,434 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,435 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,435 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,435 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,435 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,446 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,446 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,447 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,447 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,447 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,447 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 01:00:39,452 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-29 01:00:39,477 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-04-29 01:00:39,520 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-29 01:00:39,521 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-29 01:00:39,521 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-29 01:00:39,521 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-29 01:00:39,521 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-29 01:00:39,522 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-29 01:00:39,522 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-29 01:00:39,522 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-29 01:00:39,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 66 transitions, 142 flow [2021-04-29 01:00:39,617 INFO L129 PetriNetUnfolder]: 4/76 cut-off events. [2021-04-29 01:00:39,617 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 01:00:39,626 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 76 events. 4/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 106 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2021-04-29 01:00:39,627 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 66 transitions, 142 flow [2021-04-29 01:00:39,635 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 65 transitions, 138 flow [2021-04-29 01:00:39,638 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 01:00:39,655 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 65 transitions, 138 flow [2021-04-29 01:00:39,661 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 65 transitions, 138 flow [2021-04-29 01:00:39,664 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 65 transitions, 138 flow [2021-04-29 01:00:39,707 INFO L129 PetriNetUnfolder]: 4/76 cut-off events. [2021-04-29 01:00:39,708 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 01:00:39,710 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 76 events. 4/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 110 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2021-04-29 01:00:39,716 INFO L146 LiptonReduction]: Number of co-enabled transitions 742 [2021-04-29 01:00:45,203 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-29 01:00:45,358 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-04-29 01:00:45,668 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-04-29 01:00:45,863 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-04-29 01:00:46,077 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-04-29 01:00:46,273 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-04-29 01:00:47,862 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-04-29 01:00:48,078 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-04-29 01:00:48,296 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2021-04-29 01:00:48,516 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2021-04-29 01:00:48,708 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-04-29 01:00:48,906 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-04-29 01:00:49,085 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-29 01:00:49,244 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-29 01:00:49,577 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2021-04-29 01:00:49,693 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-04-29 01:00:49,978 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2021-04-29 01:00:50,101 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-04-29 01:00:50,311 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-04-29 01:00:50,615 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-04-29 01:00:50,875 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2021-04-29 01:00:51,120 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2021-04-29 01:00:51,324 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-04-29 01:00:51,516 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-04-29 01:00:51,689 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-29 01:00:51,872 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-29 01:00:52,191 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2021-04-29 01:00:52,309 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-04-29 01:00:52,576 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2021-04-29 01:00:52,704 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-04-29 01:00:52,889 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-04-29 01:00:53,038 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-29 01:00:53,202 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-04-29 01:00:53,344 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-29 01:00:53,496 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-04-29 01:00:53,630 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-04-29 01:00:53,783 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-04-29 01:00:53,915 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-04-29 01:00:54,054 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-04-29 01:00:54,168 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-04-29 01:00:54,291 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-04-29 01:00:54,408 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-04-29 01:00:54,569 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-04-29 01:00:54,708 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-29 01:00:54,863 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-04-29 01:00:55,008 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-29 01:00:55,181 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-04-29 01:00:55,331 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-04-29 01:00:55,666 WARN L205 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2021-04-29 01:00:55,816 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-04-29 01:00:55,959 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-29 01:00:56,090 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-04-29 01:00:56,237 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-29 01:00:56,379 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-04-29 01:00:56,519 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-29 01:00:56,645 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-04-29 01:00:56,793 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-29 01:00:56,923 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-04-29 01:00:57,088 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-04-29 01:00:57,238 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-04-29 01:00:57,401 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-04-29 01:00:57,549 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-04-29 01:00:57,704 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-04-29 01:00:57,842 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-04-29 01:00:58,000 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-04-29 01:00:58,136 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-04-29 01:00:58,302 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-04-29 01:00:58,450 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-04-29 01:00:58,783 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97 [2021-04-29 01:00:58,931 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-04-29 01:00:59,068 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-04-29 01:00:59,200 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-04-29 01:00:59,353 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-04-29 01:00:59,488 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-04-29 01:00:59,523 INFO L158 LiptonReduction]: Checked pairs total: 1508 [2021-04-29 01:00:59,523 INFO L160 LiptonReduction]: Total number of compositions: 145 [2021-04-29 01:00:59,527 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 19891 [2021-04-29 01:00:59,544 INFO L129 PetriNetUnfolder]: 0/37 cut-off events. [2021-04-29 01:00:59,544 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 01:00:59,544 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 01:00:59,545 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2021-04-29 01:00:59,545 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-04-29 01:00:59,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 01:00:59,551 INFO L82 PathProgramCache]: Analyzing trace with hash 331255, now seen corresponding path program 1 times [2021-04-29 01:00:59,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 01:00:59,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849042524] [2021-04-29 01:00:59,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 01:00:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 01:00:59,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 01:00:59,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 01:00:59,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 01:00:59,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849042524] [2021-04-29 01:00:59,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 01:00:59,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-29 01:00:59,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814039804] [2021-04-29 01:00:59,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 01:00:59,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 01:00:59,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 01:00:59,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 01:00:59,822 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 211 [2021-04-29 01:00:59,826 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 01:00:59,826 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 01:00:59,826 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 211 [2021-04-29 01:00:59,828 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 01:01:00,179 INFO L129 PetriNetUnfolder]: 1141/1980 cut-off events. [2021-04-29 01:01:00,179 INFO L130 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2021-04-29 01:01:00,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3993 conditions, 1980 events. 1141/1980 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 15294 event pairs, 412 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 3926. Up to 1209 conditions per place. [2021-04-29 01:01:00,189 INFO L132 encePairwiseOnDemand]: 202/211 looper letters, 45 selfloop transitions, 4 changer transitions 35/94 dead transitions. [2021-04-29 01:01:00,189 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 94 transitions, 344 flow [2021-04-29 01:01:00,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 01:01:00,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 01:01:00,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2021-04-29 01:01:00,206 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6050552922590837 [2021-04-29 01:01:00,207 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2021-04-29 01:01:00,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2021-04-29 01:01:00,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 01:01:00,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2021-04-29 01:01:00,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 01:01:00,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 01:01:00,226 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 01:01:00,228 INFO L185 Difference]: Start difference. First operand has 81 places, 75 transitions, 158 flow. Second operand 3 states and 383 transitions. [2021-04-29 01:01:00,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 94 transitions, 344 flow [2021-04-29 01:01:00,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 94 transitions, 343 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 01:01:00,235 INFO L241 Difference]: Finished difference. Result has 81 places, 38 transitions, 99 flow [2021-04-29 01:01:00,237 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=81, PETRI_TRANSITIONS=38} [2021-04-29 01:01:00,238 INFO L343 CegarLoopForPetriNet]: 81 programPoint places, 0 predicate places. [2021-04-29 01:01:00,238 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 01:01:00,239 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 38 transitions, 99 flow [2021-04-29 01:01:00,239 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 38 transitions, 99 flow [2021-04-29 01:01:00,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 46 places, 38 transitions, 99 flow [2021-04-29 01:01:00,245 INFO L129 PetriNetUnfolder]: 0/55 cut-off events. [2021-04-29 01:01:00,245 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 01:01:00,246 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 55 events. 0/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 270 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2021-04-29 01:01:00,247 INFO L146 LiptonReduction]: Number of co-enabled transitions 704 [2021-04-29 01:01:00,252 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 01:01:00,252 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 01:01:00,253 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 15 [2021-04-29 01:01:00,254 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 99 flow [2021-04-29 01:01:00,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 01:01:00,255 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 01:01:00,255 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-04-29 01:01:00,256 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-29 01:01:00,256 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-04-29 01:01:00,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 01:01:00,256 INFO L82 PathProgramCache]: Analyzing trace with hash 922908951, now seen corresponding path program 1 times [2021-04-29 01:01:00,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 01:01:00,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369128761] [2021-04-29 01:01:00,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 01:01:00,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-04-29 01:01:00,285 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-04-29 01:01:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-04-29 01:01:00,308 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-04-29 01:01:00,333 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-04-29 01:01:00,334 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-04-29 01:01:00,335 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-29 01:01:00,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 01:01:00 BasicIcfg [2021-04-29 01:01:00,393 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-29 01:01:00,396 INFO L168 Benchmark]: Toolchain (without parser) took 22449.89 ms. Allocated memory was 316.7 MB in the beginning and 459.3 MB in the end (delta: 142.6 MB). Free memory was 292.3 MB in the beginning and 200.7 MB in the end (delta: 91.6 MB). Peak memory consumption was 236.3 MB. Max. memory is 16.0 GB. [2021-04-29 01:01:00,407 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 316.7 MB. Free memory was 286.6 MB in the beginning and 286.5 MB in the end (delta: 153.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 01:01:00,408 INFO L168 Benchmark]: CACSL2BoogieTranslator took 697.03 ms. Allocated memory is still 316.7 MB. Free memory was 289.1 MB in the beginning and 259.8 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2021-04-29 01:01:00,408 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.65 ms. Allocated memory is still 316.7 MB. Free memory was 259.5 MB in the beginning and 257.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 01:01:00,409 INFO L168 Benchmark]: Boogie Preprocessor took 60.51 ms. Allocated memory is still 316.7 MB. Free memory was 257.8 MB in the beginning and 299.5 MB in the end (delta: -41.7 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.0 GB. [2021-04-29 01:01:00,410 INFO L168 Benchmark]: RCFGBuilder took 501.52 ms. Allocated memory is still 316.7 MB. Free memory was 299.5 MB in the beginning and 277.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-04-29 01:01:00,411 INFO L168 Benchmark]: TraceAbstraction took 21071.60 ms. Allocated memory was 316.7 MB in the beginning and 459.3 MB in the end (delta: 142.6 MB). Free memory was 277.5 MB in the beginning and 200.7 MB in the end (delta: 76.8 MB). Peak memory consumption was 221.5 MB. Max. memory is 16.0 GB. [2021-04-29 01:01:00,420 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 316.7 MB. Free memory was 286.6 MB in the beginning and 286.5 MB in the end (delta: 153.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 697.03 ms. Allocated memory is still 316.7 MB. Free memory was 289.1 MB in the beginning and 259.8 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 50.65 ms. Allocated memory is still 316.7 MB. Free memory was 259.5 MB in the beginning and 257.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 60.51 ms. Allocated memory is still 316.7 MB. Free memory was 257.8 MB in the beginning and 299.5 MB in the end (delta: -41.7 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.0 GB. * RCFGBuilder took 501.52 ms. Allocated memory is still 316.7 MB. Free memory was 299.5 MB in the beginning and 277.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 21071.60 ms. Allocated memory was 316.7 MB in the beginning and 459.3 MB in the end (delta: 142.6 MB). Free memory was 277.5 MB in the beginning and 200.7 MB in the end (delta: 76.8 MB). Peak memory consumption was 221.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 19862.1ms, 68 PlacesBefore, 81 PlacesAfterwards, 65 TransitionsBefore, 75 TransitionsAfterwards, 742 CoEnabledTransitionPairs, 8 FixpointIterations, 83 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 3 ConcurrentYvCompositions, 5 ChoiceCompositions, 145 TotalNumberOfCompositions, 1508 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1361, positive: 1351, positive conditional: 1351, positive unconditional: 0, negative: 10, negative conditional: 10, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 763, positive: 758, positive conditional: 0, positive unconditional: 758, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 763, positive: 758, positive conditional: 0, positive unconditional: 758, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 763, positive: 758, positive conditional: 0, positive unconditional: 758, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 52, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1361, positive: 593, positive conditional: 593, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 763, unknown conditional: 763, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 754, Positive cache size: 749, Positive conditional cache size: 749, Positive unconditional cache size: 0, Negative cache size: 5, Negative conditional cache size: 5, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13.4ms, 81 PlacesBefore, 46 PlacesAfterwards, 38 TransitionsBefore, 38 TransitionsAfterwards, 704 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 754, Positive cache size: 749, Positive conditional cache size: 749, Positive unconditional cache size: 0, Negative cache size: 5, Negative conditional cache size: 5, Negative unconditional cache size: 0 - CounterExampleResult [Line: 690]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L697] 0 volatile int x; [L698] 0 volatile int n; [L710] 0 pthread_t t1, t2; [L711] 0 int i; [L712] 0 x = 0 [L713] 0 n = __VERIFIER_nondet_int() [L686] COND FALSE 0 !(!cond) [L715] FCALL, FORK 0 pthread_create(&t1, 0, thr1, 0) VAL [n=1, x=0] [L716] 0 i = 0 VAL [n=1, x=0] [L716] COND TRUE 0 i < n [L717] FCALL, FORK 0 pthread_create(&t2, 0, thr2, 0) VAL [arg={0:0}, n=1, x=0] [L704] 2 int t; [L705] 2 t = x [L706] 2 x = t + 1 [L707] 2 return 0; VAL [\result={0:0}, arg={0:0}, arg={0:0}, n=1, t=0, x=1] [L689] COND TRUE 1 !(cond) [L690] 1 reach_error() VAL [\result={0:0}, arg={0:0}, arg={0:0}, n=1, t=0, x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 8.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 20823.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 424.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 20012.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 28 SDtfs, 18 SDslu, 0 SDs, 0 SdLazy, 66 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 112.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=158occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.1ms SsaConstructionTime, 64.4ms SatisfiabilityAnalysisTime, 94.8ms InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...