/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/concurrent/pthreads/regression/mainThreadTerminates.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-29 03:37:55,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-29 03:37:55,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-29 03:37:55,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-29 03:37:55,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-29 03:37:55,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-29 03:37:55,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-29 03:37:55,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-29 03:37:55,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-29 03:37:55,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-29 03:37:55,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-29 03:37:55,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-29 03:37:55,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-29 03:37:55,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-29 03:37:55,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-29 03:37:55,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-29 03:37:55,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-29 03:37:55,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-29 03:37:55,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-29 03:37:55,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-29 03:37:55,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-29 03:37:55,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-29 03:37:55,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-29 03:37:55,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-29 03:37:55,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-29 03:37:55,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-29 03:37:55,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-29 03:37:55,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-29 03:37:55,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-29 03:37:55,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-29 03:37:55,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-29 03:37:55,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-29 03:37:55,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-29 03:37:55,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-29 03:37:55,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-29 03:37:55,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-29 03:37:55,800 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 03:37:55,851 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-29 03:37:55,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-29 03:37:55,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-29 03:37:55,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-29 03:37:55,857 INFO L138 SettingsManager]: * Use SBE=true [2021-04-29 03:37:55,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-29 03:37:55,857 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-29 03:37:55,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-29 03:37:55,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-29 03:37:55,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-29 03:37:55,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-29 03:37:55,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-29 03:37:55,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-29 03:37:55,859 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-29 03:37:55,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-29 03:37:55,859 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-29 03:37:55,859 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-29 03:37:55,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-29 03:37:55,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-29 03:37:55,860 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-29 03:37:55,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-29 03:37:55,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 03:37:55,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-29 03:37:55,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-29 03:37:55,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-29 03:37:55,861 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-29 03:37:55,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-29 03:37:55,862 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-29 03:37:55,862 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-29 03:37:55,862 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-29 03:37:55,862 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-29 03:37:56,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-29 03:37:56,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-29 03:37:56,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-29 03:37:56,290 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-29 03:37:56,290 INFO L275 PluginConnector]: CDTParser initialized [2021-04-29 03:37:56,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/mainThreadTerminates.c [2021-04-29 03:37:56,376 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e25a39326/1992cfd2a8f14261bc76cd95c5935f9e/FLAG42d33da1d [2021-04-29 03:37:56,977 INFO L306 CDTParser]: Found 1 translation units. [2021-04-29 03:37:56,978 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/mainThreadTerminates.c [2021-04-29 03:37:56,978 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-04-29 03:37:56,979 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-04-29 03:37:57,022 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e25a39326/1992cfd2a8f14261bc76cd95c5935f9e/FLAG42d33da1d [2021-04-29 03:37:57,347 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e25a39326/1992cfd2a8f14261bc76cd95c5935f9e [2021-04-29 03:37:57,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-29 03:37:57,396 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-29 03:37:57,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-29 03:37:57,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-29 03:37:57,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-29 03:37:57,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 03:37:57" (1/1) ... [2021-04-29 03:37:57,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43bd3ce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:37:57, skipping insertion in model container [2021-04-29 03:37:57,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 03:37:57" (1/1) ... [2021-04-29 03:37:57,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-29 03:37:57,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-29 03:37:57,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-29 03:37:57,590 INFO L203 MainTranslator]: Completed pre-run [2021-04-29 03:37:57,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-29 03:37:57,621 INFO L208 MainTranslator]: Completed translation [2021-04-29 03:37:57,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:37:57 WrapperNode [2021-04-29 03:37:57,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-29 03:37:57,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-29 03:37:57,624 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-29 03:37:57,624 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-29 03:37:57,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:37:57" (1/1) ... [2021-04-29 03:37:57,639 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:37:57" (1/1) ... [2021-04-29 03:37:57,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-29 03:37:57,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-29 03:37:57,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-29 03:37:57,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-29 03:37:57,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:37:57" (1/1) ... [2021-04-29 03:37:57,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:37:57" (1/1) ... [2021-04-29 03:37:57,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:37:57" (1/1) ... [2021-04-29 03:37:57,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:37:57" (1/1) ... [2021-04-29 03:37:57,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:37:57" (1/1) ... [2021-04-29 03:37:57,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:37:57" (1/1) ... [2021-04-29 03:37:57,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:37:57" (1/1) ... [2021-04-29 03:37:57,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-29 03:37:57,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-29 03:37:57,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-29 03:37:57,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-29 03:37:57,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:37:57" (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 03:37:57,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-29 03:37:57,776 INFO L130 BoogieDeclarations]: Found specification of procedure worker_thread [2021-04-29 03:37:57,776 INFO L138 BoogieDeclarations]: Found implementation of procedure worker_thread [2021-04-29 03:37:57,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-29 03:37:57,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-29 03:37:57,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-29 03:37:57,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-29 03:37:57,779 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 03:37:58,028 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-29 03:37:58,029 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-04-29 03:37:58,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 03:37:58 BoogieIcfgContainer [2021-04-29 03:37:58,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-29 03:37:58,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-29 03:37:58,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-29 03:37:58,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-29 03:37:58,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 03:37:57" (1/3) ... [2021-04-29 03:37:58,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52132e61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 03:37:58, skipping insertion in model container [2021-04-29 03:37:58,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:37:57" (2/3) ... [2021-04-29 03:37:58,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52132e61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 03:37:58, skipping insertion in model container [2021-04-29 03:37:58,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 03:37:58" (3/3) ... [2021-04-29 03:37:58,090 INFO L111 eAbstractionObserver]: Analyzing ICFG mainThreadTerminates.c [2021-04-29 03:37:58,104 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-29 03:37:58,111 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-29 03:37:58,113 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-29 03:37:58,169 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:37:58,169 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:37:58,169 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:37:58,170 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:37:58,174 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:37:58,174 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:37:58,174 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:37:58,174 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:37:58,176 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:37:58,177 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:37:58,178 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:37:58,180 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:37:58,180 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:37:58,181 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:37:58,181 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:37:58,182 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:37:58,182 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:37:58,182 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:37:58,182 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:37:58,183 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:37:58,183 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:37:58,183 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:37:58,183 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:37:58,185 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:37:58,188 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:37:58,188 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:37:58,189 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:37:58,189 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:37:58,189 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:37:58,189 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:37:58,199 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-29 03:37:58,228 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-04-29 03:37:58,279 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-29 03:37:58,279 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-29 03:37:58,279 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-29 03:37:58,280 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-29 03:37:58,280 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-29 03:37:58,280 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-29 03:37:58,280 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-29 03:37:58,280 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-29 03:37:58,297 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 27 places, 25 transitions, 55 flow [2021-04-29 03:37:58,343 INFO L129 PetriNetUnfolder]: 2/24 cut-off events. [2021-04-29 03:37:58,343 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 03:37:58,347 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 24 events. 2/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 16. Up to 2 conditions per place. [2021-04-29 03:37:58,348 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 25 transitions, 55 flow [2021-04-29 03:37:58,371 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 22 transitions, 47 flow [2021-04-29 03:37:58,373 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:37:58,391 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 22 transitions, 47 flow [2021-04-29 03:37:58,397 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 22 transitions, 47 flow [2021-04-29 03:37:58,399 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 22 transitions, 47 flow [2021-04-29 03:37:58,424 INFO L129 PetriNetUnfolder]: 2/22 cut-off events. [2021-04-29 03:37:58,424 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 03:37:58,425 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 22 events. 2/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2021-04-29 03:37:58,427 INFO L146 LiptonReduction]: Number of co-enabled transitions 90 [2021-04-29 03:37:59,327 INFO L158 LiptonReduction]: Checked pairs total: 101 [2021-04-29 03:37:59,327 INFO L160 LiptonReduction]: Total number of compositions: 27 [2021-04-29 03:37:59,331 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 959 [2021-04-29 03:37:59,346 INFO L129 PetriNetUnfolder]: 1/21 cut-off events. [2021-04-29 03:37:59,347 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 03:37:59,347 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:37:59,348 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-04-29 03:37:59,348 INFO L428 AbstractCegarLoop]: === Iteration 1 === [worker_threadErr0ASSERT_VIOLATIONASSERT, worker_threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-04-29 03:37:59,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:37:59,355 INFO L82 PathProgramCache]: Analyzing trace with hash 3913616, now seen corresponding path program 1 times [2021-04-29 03:37:59,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:37:59,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823066508] [2021-04-29 03:37:59,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:37:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:37:59,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:37:59,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:37:59,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:37:59,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:37:59,529 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 03:37:59,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823066508] [2021-04-29 03:37:59,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:37:59,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-29 03:37:59,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785390398] [2021-04-29 03:37:59,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 03:37:59,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:37:59,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 03:37:59,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 03:37:59,561 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 52 [2021-04-29 03:37:59,564 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 23 transitions, 49 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 03:37:59,564 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:37:59,564 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 52 [2021-04-29 03:37:59,566 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:37:59,598 INFO L129 PetriNetUnfolder]: 2/27 cut-off events. [2021-04-29 03:37:59,598 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-04-29 03:37:59,598 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 27 events. 2/27 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 78 event pairs, 0 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 29. Up to 10 conditions per place. [2021-04-29 03:37:59,600 INFO L132 encePairwiseOnDemand]: 47/52 looper letters, 3 selfloop transitions, 2 changer transitions 15/27 dead transitions. [2021-04-29 03:37:59,600 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 27 transitions, 81 flow [2021-04-29 03:37:59,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 03:37:59,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 03:37:59,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2021-04-29 03:37:59,615 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7628205128205128 [2021-04-29 03:37:59,616 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 119 transitions. [2021-04-29 03:37:59,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 119 transitions. [2021-04-29 03:37:59,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:37:59,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 119 transitions. [2021-04-29 03:37:59,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 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 03:37:59,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 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 03:37:59,630 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 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 03:37:59,632 INFO L185 Difference]: Start difference. First operand has 26 places, 23 transitions, 49 flow. Second operand 3 states and 119 transitions. [2021-04-29 03:37:59,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 27 transitions, 81 flow [2021-04-29 03:37:59,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 27 transitions, 80 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 03:37:59,639 INFO L241 Difference]: Finished difference. Result has 28 places, 12 transitions, 36 flow [2021-04-29 03:37:59,641 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=28, PETRI_TRANSITIONS=12} [2021-04-29 03:37:59,642 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2021-04-29 03:37:59,642 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:37:59,643 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 12 transitions, 36 flow [2021-04-29 03:37:59,643 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 12 transitions, 36 flow [2021-04-29 03:37:59,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 16 places, 12 transitions, 36 flow [2021-04-29 03:37:59,648 INFO L129 PetriNetUnfolder]: 1/12 cut-off events. [2021-04-29 03:37:59,648 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-04-29 03:37:59,648 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22 conditions, 12 events. 1/12 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 21 event pairs, 0 based on Foata normal form. 0/6 useless extension candidates. Maximal degree in co-relation 15. Up to 4 conditions per place. [2021-04-29 03:37:59,649 INFO L146 LiptonReduction]: Number of co-enabled transitions 48 [2021-04-29 03:37:59,650 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 03:37:59,651 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:37:59,651 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-04-29 03:37:59,653 INFO L480 AbstractCegarLoop]: Abstraction has has 16 places, 12 transitions, 36 flow [2021-04-29 03:37:59,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 03:37:59,653 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:37:59,654 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-04-29 03:37:59,654 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-29 03:37:59,654 INFO L428 AbstractCegarLoop]: === Iteration 2 === [worker_threadErr0ASSERT_VIOLATIONASSERT, worker_threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-04-29 03:37:59,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:37:59,655 INFO L82 PathProgramCache]: Analyzing trace with hash 121322241, now seen corresponding path program 1 times [2021-04-29 03:37:59,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:37:59,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248407731] [2021-04-29 03:37:59,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:37:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:37:59,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:37:59,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:37:59,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:37:59,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:37:59,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:37:59,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:37:59,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:37:59,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248407731] [2021-04-29 03:37:59,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050232069] [2021-04-29 03:37:59,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-29 03:37:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:37:59,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-04-29 03:37:59,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-29 03:37:59,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:37:59,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:37:59,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:37:59,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:37:59,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:37:59,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:37:59,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:37:59,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:37:59,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:37:59,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:37:59,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:37:59,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:37:59,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:37:59,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:37:59,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:37:59,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:37:59,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:37:59,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:37:59,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:37:59,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:37:59,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:37:59,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:37:59,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:37:59,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:37:59,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:37:59,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-29 03:37:59,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:37:59,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-29 03:37:59,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-29 03:37:59,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:37:59,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-29 03:37:59,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:37:59,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-29 03:37:59,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-29 03:37:59,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:37:59,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:37:59,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:37:59,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:37:59,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:37:59,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-29 03:37:59,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-04-29 03:37:59,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58077380] [2021-04-29 03:37:59,822 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 03:37:59,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:37:59,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 03:37:59,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-04-29 03:37:59,824 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 52 [2021-04-29 03:37:59,825 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 12 transitions, 36 flow. Second operand has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 0 states have call successors, (0), 0 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 03:37:59,825 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:37:59,825 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 52 [2021-04-29 03:37:59,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:37:59,842 INFO L129 PetriNetUnfolder]: 1/13 cut-off events. [2021-04-29 03:37:59,842 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-04-29 03:37:59,843 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 13 events. 1/13 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 19 event pairs, 0 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 22. Up to 5 conditions per place. [2021-04-29 03:37:59,843 INFO L132 encePairwiseOnDemand]: 49/52 looper letters, 3 selfloop transitions, 3 changer transitions 0/13 dead transitions. [2021-04-29 03:37:59,843 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 13 transitions, 52 flow [2021-04-29 03:37:59,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 03:37:59,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 03:37:59,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2021-04-29 03:37:59,846 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7067307692307693 [2021-04-29 03:37:59,847 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 147 transitions. [2021-04-29 03:37:59,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 147 transitions. [2021-04-29 03:37:59,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:37:59,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 147 transitions. [2021-04-29 03:37:59,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 03:37:59,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 0 states have call successors, (0), 0 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 03:37:59,852 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 0 states have call successors, (0), 0 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 03:37:59,852 INFO L185 Difference]: Start difference. First operand has 16 places, 12 transitions, 36 flow. Second operand 4 states and 147 transitions. [2021-04-29 03:37:59,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 13 transitions, 52 flow [2021-04-29 03:37:59,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 13 transitions, 48 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-04-29 03:37:59,853 INFO L241 Difference]: Finished difference. Result has 19 places, 13 transitions, 48 flow [2021-04-29 03:37:59,854 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=19, PETRI_TRANSITIONS=13} [2021-04-29 03:37:59,854 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, -7 predicate places. [2021-04-29 03:37:59,855 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:37:59,855 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 19 places, 13 transitions, 48 flow [2021-04-29 03:37:59,855 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 19 places, 13 transitions, 48 flow [2021-04-29 03:37:59,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 19 places, 13 transitions, 48 flow [2021-04-29 03:37:59,860 INFO L129 PetriNetUnfolder]: 1/13 cut-off events. [2021-04-29 03:37:59,860 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-04-29 03:37:59,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 13 events. 1/13 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 26 event pairs, 0 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-04-29 03:37:59,861 INFO L146 LiptonReduction]: Number of co-enabled transitions 60 [2021-04-29 03:37:59,902 INFO L158 LiptonReduction]: Checked pairs total: 6 [2021-04-29 03:37:59,902 INFO L160 LiptonReduction]: Total number of compositions: 1 [2021-04-29 03:37:59,903 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 48 [2021-04-29 03:37:59,904 INFO L480 AbstractCegarLoop]: Abstraction has has 19 places, 13 transitions, 50 flow [2021-04-29 03:37:59,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 0 states have call successors, (0), 0 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 03:37:59,905 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:37:59,905 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2021-04-29 03:38:00,119 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-04-29 03:38:00,120 INFO L428 AbstractCegarLoop]: === Iteration 3 === [worker_threadErr0ASSERT_VIOLATIONASSERT, worker_threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-04-29 03:38:00,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:38:00,122 INFO L82 PathProgramCache]: Analyzing trace with hash -533977680, now seen corresponding path program 2 times [2021-04-29 03:38:00,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:38:00,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237630169] [2021-04-29 03:38:00,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:38:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:38:00,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:38:00,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:38:00,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:38:00,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:38:00,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:38:00,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237630169] [2021-04-29 03:38:00,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319707586] [2021-04-29 03:38:00,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-29 03:38:00,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-29 03:38:00,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-29 03:38:00,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2021-04-29 03:38:00,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-29 03:38:00,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:38:00,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:38:00,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:38:00,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:38:00,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:38:00,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:38:00,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:38:00,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:38:00,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:38:00,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:38:00,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:38:00,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:38:00,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-29 03:38:00,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-29 03:38:00,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-29 03:38:00,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-29 03:38:00,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-29 03:38:00,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-29 03:38:00,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:38:00,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:38:00,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-29 03:38:00,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-29 03:38:00,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-29 03:38:00,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-29 03:38:00,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-29 03:38:00,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-29 03:38:00,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:38:00,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:38:00,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:38:00,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-29 03:38:00,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-04-29 03:38:00,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132486912] [2021-04-29 03:38:00,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 03:38:00,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:38:00,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 03:38:00,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-04-29 03:38:00,325 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 53 [2021-04-29 03:38:00,326 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 50 flow. Second operand has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 0 states have call successors, (0), 0 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 03:38:00,326 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:38:00,326 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 53 [2021-04-29 03:38:00,326 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:38:00,378 INFO L129 PetriNetUnfolder]: 1/14 cut-off events. [2021-04-29 03:38:00,378 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-04-29 03:38:00,379 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 14 events. 1/14 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 30 event pairs, 0 based on Foata normal form. 0/8 useless extension candidates. Maximal degree in co-relation 31. Up to 6 conditions per place. [2021-04-29 03:38:00,379 INFO L132 encePairwiseOnDemand]: 49/53 looper letters, 3 selfloop transitions, 3 changer transitions 1/14 dead transitions. [2021-04-29 03:38:00,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 14 transitions, 70 flow [2021-04-29 03:38:00,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 03:38:00,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 03:38:00,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2021-04-29 03:38:00,385 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.690566037735849 [2021-04-29 03:38:00,385 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 183 transitions. [2021-04-29 03:38:00,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 183 transitions. [2021-04-29 03:38:00,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:38:00,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 183 transitions. [2021-04-29 03:38:00,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 0 states have call successors, (0), 0 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 03:38:00,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 53.0) internal successors, (318), 6 states have internal predecessors, (318), 0 states have call successors, (0), 0 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 03:38:00,389 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 53.0) internal successors, (318), 6 states have internal predecessors, (318), 0 states have call successors, (0), 0 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 03:38:00,389 INFO L185 Difference]: Start difference. First operand has 19 places, 13 transitions, 50 flow. Second operand 5 states and 183 transitions. [2021-04-29 03:38:00,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 14 transitions, 70 flow [2021-04-29 03:38:00,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 14 transitions, 61 flow, removed 3 selfloop flow, removed 1 redundant places. [2021-04-29 03:38:00,391 INFO L241 Difference]: Finished difference. Result has 23 places, 13 transitions, 54 flow [2021-04-29 03:38:00,391 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=54, PETRI_PLACES=23, PETRI_TRANSITIONS=13} [2021-04-29 03:38:00,392 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, -3 predicate places. [2021-04-29 03:38:00,392 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:38:00,392 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 13 transitions, 54 flow [2021-04-29 03:38:00,392 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 13 transitions, 54 flow [2021-04-29 03:38:00,393 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 13 transitions, 54 flow [2021-04-29 03:38:00,397 INFO L129 PetriNetUnfolder]: 1/13 cut-off events. [2021-04-29 03:38:00,397 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 03:38:00,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 13 events. 1/13 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 21 event pairs, 0 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 24. Up to 5 conditions per place. [2021-04-29 03:38:00,398 INFO L146 LiptonReduction]: Number of co-enabled transitions 60 [2021-04-29 03:38:00,441 INFO L158 LiptonReduction]: Checked pairs total: 6 [2021-04-29 03:38:00,441 INFO L160 LiptonReduction]: Total number of compositions: 1 [2021-04-29 03:38:00,442 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 50 [2021-04-29 03:38:00,443 INFO L480 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 56 flow [2021-04-29 03:38:00,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 0 states have call successors, (0), 0 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 03:38:00,444 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:38:00,444 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2021-04-29 03:38:00,657 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-29 03:38:00,658 INFO L428 AbstractCegarLoop]: === Iteration 4 === [worker_threadErr0ASSERT_VIOLATIONASSERT, worker_threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-04-29 03:38:00,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:38:00,659 INFO L82 PathProgramCache]: Analyzing trace with hash -533203114, now seen corresponding path program 1 times [2021-04-29 03:38:00,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:38:00,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983080067] [2021-04-29 03:38:00,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:38:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:38:00,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:38:00,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-29 03:38:00,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:38:00,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:38:00,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:38:00,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983080067] [2021-04-29 03:38:00,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384151802] [2021-04-29 03:38:00,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-29 03:38:00,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:38:00,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2021-04-29 03:38:00,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-29 03:38:00,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:38:00,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:38:00,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:38:00,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:38:00,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:38:00,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:38:00,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:38:00,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:38:00,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:38:00,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:38:00,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:38:00,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:38:00,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-29 03:38:00,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-29 03:38:00,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-29 03:38:00,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-29 03:38:00,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-29 03:38:00,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-29 03:38:00,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:38:00,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:38:00,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-29 03:38:00,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-29 03:38:00,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-29 03:38:00,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-29 03:38:00,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-29 03:38:00,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-29 03:38:00,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:38:00,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:00,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:38:00,801 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:38:00,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-29 03:38:00,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-04-29 03:38:00,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565780056] [2021-04-29 03:38:00,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 03:38:00,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:38:00,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 03:38:00,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-04-29 03:38:00,804 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 54 [2021-04-29 03:38:00,805 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 13 transitions, 56 flow. Second operand has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 0 states have call successors, (0), 0 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 03:38:00,805 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:38:00,805 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 54 [2021-04-29 03:38:00,805 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:38:00,824 INFO L129 PetriNetUnfolder]: 1/14 cut-off events. [2021-04-29 03:38:00,824 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-04-29 03:38:00,825 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 14 events. 1/14 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 30 event pairs, 0 based on Foata normal form. 0/8 useless extension candidates. Maximal degree in co-relation 35. Up to 6 conditions per place. [2021-04-29 03:38:00,825 INFO L132 encePairwiseOnDemand]: 50/54 looper letters, 3 selfloop transitions, 3 changer transitions 1/14 dead transitions. [2021-04-29 03:38:00,825 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 14 transitions, 78 flow [2021-04-29 03:38:00,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 03:38:00,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 03:38:00,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2021-04-29 03:38:00,828 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6777777777777778 [2021-04-29 03:38:00,828 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 183 transitions. [2021-04-29 03:38:00,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 183 transitions. [2021-04-29 03:38:00,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:38:00,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 183 transitions. [2021-04-29 03:38:00,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 0 states have call successors, (0), 0 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 03:38:00,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 0 states have call successors, (0), 0 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 03:38:00,831 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 0 states have call successors, (0), 0 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 03:38:00,832 INFO L185 Difference]: Start difference. First operand has 20 places, 13 transitions, 56 flow. Second operand 5 states and 183 transitions. [2021-04-29 03:38:00,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 14 transitions, 78 flow [2021-04-29 03:38:00,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 14 transitions, 61 flow, removed 7 selfloop flow, removed 2 redundant places. [2021-04-29 03:38:00,834 INFO L241 Difference]: Finished difference. Result has 23 places, 13 transitions, 54 flow [2021-04-29 03:38:00,834 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=54, PETRI_PLACES=23, PETRI_TRANSITIONS=13} [2021-04-29 03:38:00,834 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, -3 predicate places. [2021-04-29 03:38:00,834 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:38:00,835 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 13 transitions, 54 flow [2021-04-29 03:38:00,835 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 13 transitions, 54 flow [2021-04-29 03:38:00,836 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 13 transitions, 54 flow [2021-04-29 03:38:00,839 INFO L129 PetriNetUnfolder]: 1/13 cut-off events. [2021-04-29 03:38:00,839 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 03:38:00,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 13 events. 1/13 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 19 event pairs, 0 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 24. Up to 5 conditions per place. [2021-04-29 03:38:00,840 INFO L146 LiptonReduction]: Number of co-enabled transitions 60 [2021-04-29 03:38:00,891 INFO L158 LiptonReduction]: Checked pairs total: 6 [2021-04-29 03:38:00,891 INFO L160 LiptonReduction]: Total number of compositions: 1 [2021-04-29 03:38:00,891 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 57 [2021-04-29 03:38:00,893 INFO L480 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 56 flow [2021-04-29 03:38:00,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 0 states have call successors, (0), 0 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 03:38:00,893 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:38:00,893 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2021-04-29 03:38:01,108 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-29 03:38:01,109 INFO L428 AbstractCegarLoop]: === Iteration 5 === [worker_threadErr0ASSERT_VIOLATIONASSERT, worker_threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-04-29 03:38:01,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:38:01,110 INFO L82 PathProgramCache]: Analyzing trace with hash -533173323, now seen corresponding path program 1 times [2021-04-29 03:38:01,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:38:01,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761788758] [2021-04-29 03:38:01,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:38:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-04-29 03:38:01,125 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-04-29 03:38:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-04-29 03:38:01,136 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-04-29 03:38:01,171 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-04-29 03:38:01,171 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-04-29 03:38:01,172 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-29 03:38:01,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 03:38:01 BasicIcfg [2021-04-29 03:38:01,206 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-29 03:38:01,209 INFO L168 Benchmark]: Toolchain (without parser) took 3853.93 ms. Allocated memory was 304.1 MB in the beginning and 369.1 MB in the end (delta: 65.0 MB). Free memory was 277.7 MB in the beginning and 301.9 MB in the end (delta: -24.3 MB). Peak memory consumption was 42.1 MB. Max. memory is 16.0 GB. [2021-04-29 03:38:01,213 INFO L168 Benchmark]: CDTParser took 0.88 ms. Allocated memory is still 304.1 MB. Free memory was 272.5 MB in the beginning and 272.5 MB in the end (delta: 78.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 03:38:01,214 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.09 ms. Allocated memory is still 304.1 MB. Free memory was 274.5 MB in the beginning and 266.0 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-04-29 03:38:01,214 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.36 ms. Allocated memory is still 304.1 MB. Free memory was 266.0 MB in the beginning and 264.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 03:38:01,215 INFO L168 Benchmark]: Boogie Preprocessor took 22.38 ms. Allocated memory is still 304.1 MB. Free memory was 264.7 MB in the beginning and 263.8 MB in the end (delta: 887.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-29 03:38:01,215 INFO L168 Benchmark]: RCFGBuilder took 350.34 ms. Allocated memory is still 304.1 MB. Free memory was 263.7 MB in the beginning and 251.9 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-04-29 03:38:01,216 INFO L168 Benchmark]: TraceAbstraction took 3146.24 ms. Allocated memory was 304.1 MB in the beginning and 369.1 MB in the end (delta: 65.0 MB). Free memory was 285.1 MB in the beginning and 301.9 MB in the end (delta: -16.8 MB). Peak memory consumption was 47.9 MB. Max. memory is 16.0 GB. [2021-04-29 03:38:01,226 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.88 ms. Allocated memory is still 304.1 MB. Free memory was 272.5 MB in the beginning and 272.5 MB in the end (delta: 78.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 224.09 ms. Allocated memory is still 304.1 MB. Free memory was 274.5 MB in the beginning and 266.0 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 33.36 ms. Allocated memory is still 304.1 MB. Free memory was 266.0 MB in the beginning and 264.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 22.38 ms. Allocated memory is still 304.1 MB. Free memory was 264.7 MB in the beginning and 263.8 MB in the end (delta: 887.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 350.34 ms. Allocated memory is still 304.1 MB. Free memory was 263.7 MB in the beginning and 251.9 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3146.24 ms. Allocated memory was 304.1 MB in the beginning and 369.1 MB in the end (delta: 65.0 MB). Free memory was 285.1 MB in the beginning and 301.9 MB in the end (delta: -16.8 MB). Peak memory consumption was 47.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 930.7ms, 24 PlacesBefore, 26 PlacesAfterwards, 22 TransitionsBefore, 23 TransitionsAfterwards, 90 CoEnabledTransitionPairs, 5 FixpointIterations, 10 TrivialSequentialCompositions, 13 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 2 ChoiceCompositions, 27 TotalNumberOfCompositions, 101 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 101, positive: 101, positive conditional: 101, 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: 66, positive: 66, positive conditional: 0, positive unconditional: 66, 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: 66, positive: 66, positive conditional: 0, positive unconditional: 66, 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: 66, positive: 66, positive conditional: 0, positive unconditional: 66, 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: 101, positive: 35, positive conditional: 35, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 66, unknown conditional: 66, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 59, Positive cache size: 59, Positive conditional cache size: 59, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.7ms, 28 PlacesBefore, 16 PlacesAfterwards, 12 TransitionsBefore, 12 TransitionsAfterwards, 48 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): 59, Positive cache size: 59, Positive conditional cache size: 59, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 46.9ms, 19 PlacesBefore, 19 PlacesAfterwards, 13 TransitionsBefore, 13 TransitionsAfterwards, 60 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 6 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 6, 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: 5, positive: 5, positive conditional: 0, positive unconditional: 5, 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: 5, positive: 5, positive conditional: 0, positive unconditional: 5, 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: 5, positive: 5, positive conditional: 0, positive unconditional: 5, 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: 6, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 5, unknown conditional: 5, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 64, Positive cache size: 64, Positive conditional cache size: 64, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 49.2ms, 23 PlacesBefore, 20 PlacesAfterwards, 13 TransitionsBefore, 13 TransitionsAfterwards, 60 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 6 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 6, 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: 5, positive: 5, positive conditional: 0, positive unconditional: 5, 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: 5, positive: 5, positive conditional: 0, positive unconditional: 5, 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: 5, positive: 5, positive conditional: 0, positive unconditional: 5, 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: 6, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 5, unknown conditional: 5, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 69, Positive cache size: 69, Positive conditional cache size: 69, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 56.2ms, 23 PlacesBefore, 20 PlacesAfterwards, 13 TransitionsBefore, 13 TransitionsAfterwards, 60 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 6 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 6, 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: 5, positive: 5, positive conditional: 0, positive unconditional: 5, 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: 5, positive: 5, positive conditional: 0, positive unconditional: 5, 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: 5, positive: 5, positive conditional: 0, positive unconditional: 5, 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: 6, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 5, unknown conditional: 5, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 74, Positive cache size: 74, Positive conditional cache size: 74, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - CounterExampleResult [Line: 22]: assertion can be violated assertion can be violated We found a FailurePath: [L26] 0 pthread_t thread; [L27] FCALL, FORK 0 pthread_create(&thread, NULL, worker_thread, NULL) VAL [arg={0:0}] [L18] 1 int x = 0; [L19] COND TRUE 1 x < 4 [L20] 1 x++ [L19] COND TRUE 1 x < 4 [L20] 1 x++ VAL [arg={0:0}, arg={0:0}, x=2] [L19] COND TRUE 1 x < 4 [L20] 1 x++ VAL [arg={0:0}, arg={0:0}, x=3] [L19] COND TRUE 1 x < 4 [L20] 1 x++ VAL [arg={0:0}, arg={0:0}, x=4] [L19] COND FALSE 1 !(x < 4) [L22] 1 CodeAnnotStmt[Assertion] VAL [arg={0:0}, arg={0:0}, x=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 6.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 2901.9ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 219.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1058.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 15 SDtfs, 2 SDslu, 0 SDs, 0 SdLazy, 41 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 60.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 55.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=3, InterpolantAutomatonStates: 17, 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: 28.2ms SsaConstructionTime, 97.5ms SatisfiabilityAnalysisTime, 372.4ms InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 65 SizeOfPredicates, 0 NumberOfNonLiveVariables, 99 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/14 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...