/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf -i ../../../trunk/examples/concurrent/pthreads/forkFork.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 19:59:20,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 19:59:20,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 19:59:20,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 19:59:20,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 19:59:20,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 19:59:20,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 19:59:20,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 19:59:20,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 19:59:20,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 19:59:20,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 19:59:20,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 19:59:20,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 19:59:20,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 19:59:20,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 19:59:20,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 19:59:20,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 19:59:20,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 19:59:20,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 19:59:20,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 19:59:20,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 19:59:20,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 19:59:20,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 19:59:20,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 19:59:20,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-11 19:59:20,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 19:59:20,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 19:59:20,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 19:59:20,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 19:59:20,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 19:59:20,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 19:59:20,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 19:59:20,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 19:59:20,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 19:59:20,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 19:59:20,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 19:59:20,726 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 19:59:20,777 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 19:59:20,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 19:59:20,778 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 19:59:20,778 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 19:59:20,779 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 19:59:20,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 19:59:20,782 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 19:59:20,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 19:59:20,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 19:59:20,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 19:59:20,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 19:59:20,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 19:59:20,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 19:59:20,783 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 19:59:20,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 19:59:20,784 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 19:59:20,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 19:59:20,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 19:59:20,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 19:59:20,785 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 19:59:20,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 19:59:20,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 19:59:20,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 19:59:20,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 19:59:20,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 19:59:20,787 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 19:59:20,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 19:59:20,787 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 19:59:20,787 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 19:59:20,787 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 19:59:21,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 19:59:21,168 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 19:59:21,172 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 19:59:21,174 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 19:59:21,176 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 19:59:21,177 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/forkFork.c [2020-10-11 19:59:21,244 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc23a28d7/17e436325be94cce82b3114c7606162d/FLAG8b019d8ca [2020-10-11 19:59:21,680 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 19:59:21,681 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/forkFork.c [2020-10-11 19:59:21,681 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-11 19:59:21,681 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-11 19:59:21,722 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc23a28d7/17e436325be94cce82b3114c7606162d/FLAG8b019d8ca [2020-10-11 19:59:22,073 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc23a28d7/17e436325be94cce82b3114c7606162d [2020-10-11 19:59:22,082 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 19:59:22,084 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 19:59:22,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 19:59:22,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 19:59:22,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 19:59:22,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:59:22" (1/1) ... [2020-10-11 19:59:22,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@658194d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:22, skipping insertion in model container [2020-10-11 19:59:22,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:59:22" (1/1) ... [2020-10-11 19:59:22,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 19:59:22,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 19:59:22,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 19:59:22,331 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 19:59:22,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 19:59:22,453 INFO L208 MainTranslator]: Completed translation [2020-10-11 19:59:22,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:22 WrapperNode [2020-10-11 19:59:22,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 19:59:22,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 19:59:22,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 19:59:22,457 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 19:59:22,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:22" (1/1) ... [2020-10-11 19:59:22,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:22" (1/1) ... [2020-10-11 19:59:22,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 19:59:22,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 19:59:22,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 19:59:22,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 19:59:22,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:22" (1/1) ... [2020-10-11 19:59:22,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:22" (1/1) ... [2020-10-11 19:59:22,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:22" (1/1) ... [2020-10-11 19:59:22,502 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:22" (1/1) ... [2020-10-11 19:59:22,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:22" (1/1) ... [2020-10-11 19:59:22,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:22" (1/1) ... [2020-10-11 19:59:22,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:22" (1/1) ... [2020-10-11 19:59:22,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 19:59:22,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 19:59:22,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 19:59:22,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 19:59:22,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:22" (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 [2020-10-11 19:59:22,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-11 19:59:22,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 19:59:22,574 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2020-10-11 19:59:22,575 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2020-10-11 19:59:22,575 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-11 19:59:22,575 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-11 19:59:22,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 19:59:22,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 19:59:22,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-11 19:59:22,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-11 19:59:22,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-11 19:59:22,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 19:59:22,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 19:59:22,577 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 19:59:22,904 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 19:59:22,905 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-11 19:59:22,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:59:22 BoogieIcfgContainer [2020-10-11 19:59:22,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 19:59:22,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 19:59:22,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 19:59:22,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 19:59:22,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:59:22" (1/3) ... [2020-10-11 19:59:22,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f610a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:59:22, skipping insertion in model container [2020-10-11 19:59:22,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:22" (2/3) ... [2020-10-11 19:59:22,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f610a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:59:22, skipping insertion in model container [2020-10-11 19:59:22,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:59:22" (3/3) ... [2020-10-11 19:59:22,915 INFO L111 eAbstractionObserver]: Analyzing ICFG forkFork.c [2020-10-11 19:59:22,927 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 19:59:22,934 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-11 19:59:22,935 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 19:59:22,975 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,976 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,976 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,976 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,977 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,977 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,977 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,977 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,977 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,978 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,978 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,978 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,978 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,979 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,979 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,979 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,979 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,980 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,980 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,980 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,980 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,980 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,981 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,982 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,982 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,982 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,982 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,983 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~a.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,983 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~a.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,983 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~a.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,984 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~a.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,984 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,984 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,985 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~a.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,985 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~a.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,985 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~param~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,985 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~param~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,985 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,986 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,986 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,986 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,987 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,987 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,987 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,988 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,989 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,989 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,989 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,989 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,990 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,990 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,990 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,990 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,991 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,991 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,991 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,991 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,991 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,992 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,992 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,992 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,992 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,993 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,993 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,993 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,993 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,994 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,994 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,997 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,998 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,998 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,998 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,998 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,999 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,999 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,999 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:22,999 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:23,009 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~a.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:23,010 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:23,010 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:23,010 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~param~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:23,011 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:23,011 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:23,011 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~a.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:23,011 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~param~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:23,011 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:23,013 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:23,013 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:23,013 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:23,014 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:23,014 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:23,014 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:23,014 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:23,032 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:23,032 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:23,033 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:23,033 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:23,033 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:23,033 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:23,034 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:23,034 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:23,034 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:59:23,101 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-11 19:59:23,119 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 19:59:23,119 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 19:59:23,120 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 19:59:23,120 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 19:59:23,120 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 19:59:23,120 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 19:59:23,121 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 19:59:23,121 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 19:59:23,136 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 89 places, 83 transitions, 194 flow [2020-10-11 19:59:23,188 INFO L129 PetriNetUnfolder]: 2/89 cut-off events. [2020-10-11 19:59:23,189 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2020-10-11 19:59:23,193 INFO L80 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 89 events. 2/89 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 98. Up to 5 conditions per place. [2020-10-11 19:59:23,193 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 83 transitions, 194 flow [2020-10-11 19:59:23,200 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 59 transitions, 139 flow [2020-10-11 19:59:23,211 INFO L129 PetriNetUnfolder]: 0/27 cut-off events. [2020-10-11 19:59:23,211 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 19:59:23,212 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:59:23,213 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:59:23,213 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 19:59:23,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:59:23,218 INFO L82 PathProgramCache]: Analyzing trace with hash -202481228, now seen corresponding path program 1 times [2020-10-11 19:59:23,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:59:23,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081167699] [2020-10-11 19:59:23,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:59:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:59:23,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:59:23,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081167699] [2020-10-11 19:59:23,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:59:23,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-11 19:59:23,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176946551] [2020-10-11 19:59:23,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 19:59:23,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:59:23,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 19:59:23,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-11 19:59:27,739 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 86 [2020-10-11 19:59:27,742 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 139 flow. Second operand 16 states. [2020-10-11 19:59:27,742 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:59:27,743 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 86 [2020-10-11 19:59:27,744 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:59:28,351 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-10-11 19:59:28,352 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2020-10-11 19:59:28,353 INFO L80 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 68 events. 2/68 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 32 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 70. Up to 5 conditions per place. [2020-10-11 19:59:28,354 INFO L132 encePairwiseOnDemand]: 69/86 looper letters, 9 selfloop transitions, 16 changer transitions 0/59 dead transitions. [2020-10-11 19:59:28,354 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 59 transitions, 189 flow [2020-10-11 19:59:28,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 19:59:28,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-11 19:59:28,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 980 transitions. [2020-10-11 19:59:28,379 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.6330749354005168 [2020-10-11 19:59:28,380 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 980 transitions. [2020-10-11 19:59:28,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 980 transitions. [2020-10-11 19:59:28,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:59:28,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 980 transitions. [2020-10-11 19:59:28,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 19 states. [2020-10-11 19:59:28,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 19 states. [2020-10-11 19:59:28,407 INFO L81 ComplementDD]: Finished complementDD. Result 19 states. [2020-10-11 19:59:28,409 INFO L185 Difference]: Start difference. First operand has 63 places, 59 transitions, 139 flow. Second operand 18 states and 980 transitions. [2020-10-11 19:59:28,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 59 transitions, 189 flow [2020-10-11 19:59:28,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 59 transitions, 175 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-11 19:59:28,419 INFO L241 Difference]: Finished difference. Result has 75 places, 58 transitions, 155 flow [2020-10-11 19:59:28,422 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=155, PETRI_PLACES=75, PETRI_TRANSITIONS=58} [2020-10-11 19:59:28,424 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 12 predicate places. [2020-10-11 19:59:28,424 INFO L481 AbstractCegarLoop]: Abstraction has has 75 places, 58 transitions, 155 flow [2020-10-11 19:59:28,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 19:59:28,424 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:59:28,424 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:59:28,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 19:59:28,425 INFO L429 AbstractCegarLoop]: === Iteration 2 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 19:59:28,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:59:28,425 INFO L82 PathProgramCache]: Analyzing trace with hash -214205848, now seen corresponding path program 1 times [2020-10-11 19:59:28,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:59:28,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423547377] [2020-10-11 19:59:28,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:59:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:59:28,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:59:28,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423547377] [2020-10-11 19:59:28,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:59:28,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-11 19:59:28,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114778056] [2020-10-11 19:59:28,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 19:59:28,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:59:28,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 19:59:28,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-11 19:59:33,998 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 86 [2020-10-11 19:59:33,999 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 58 transitions, 155 flow. Second operand 15 states. [2020-10-11 19:59:34,000 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:59:34,001 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 86 [2020-10-11 19:59:34,001 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:59:34,688 INFO L129 PetriNetUnfolder]: 16/139 cut-off events. [2020-10-11 19:59:34,689 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-10-11 19:59:34,690 INFO L80 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 139 events. 16/139 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 313 event pairs, 0 based on Foata normal form. 1/136 useless extension candidates. Maximal degree in co-relation 57. Up to 15 conditions per place. [2020-10-11 19:59:34,691 INFO L132 encePairwiseOnDemand]: 69/86 looper letters, 21 selfloop transitions, 21 changer transitions 0/77 dead transitions. [2020-10-11 19:59:34,692 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 77 transitions, 285 flow [2020-10-11 19:59:34,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 19:59:34,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-11 19:59:34,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 979 transitions. [2020-10-11 19:59:34,697 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.6696306429548564 [2020-10-11 19:59:34,698 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 979 transitions. [2020-10-11 19:59:34,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 979 transitions. [2020-10-11 19:59:34,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:59:34,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 979 transitions. [2020-10-11 19:59:34,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 18 states. [2020-10-11 19:59:34,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 18 states. [2020-10-11 19:59:34,705 INFO L81 ComplementDD]: Finished complementDD. Result 18 states. [2020-10-11 19:59:34,705 INFO L185 Difference]: Start difference. First operand has 75 places, 58 transitions, 155 flow. Second operand 17 states and 979 transitions. [2020-10-11 19:59:34,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 77 transitions, 285 flow [2020-10-11 19:59:34,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 77 transitions, 247 flow, removed 0 selfloop flow, removed 16 redundant places. [2020-10-11 19:59:34,710 INFO L241 Difference]: Finished difference. Result has 80 places, 67 transitions, 214 flow [2020-10-11 19:59:34,710 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=214, PETRI_PLACES=80, PETRI_TRANSITIONS=67} [2020-10-11 19:59:34,711 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 17 predicate places. [2020-10-11 19:59:34,711 INFO L481 AbstractCegarLoop]: Abstraction has has 80 places, 67 transitions, 214 flow [2020-10-11 19:59:34,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 19:59:34,711 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:59:34,712 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:59:34,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 19:59:34,712 INFO L429 AbstractCegarLoop]: === Iteration 3 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 19:59:34,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:59:34,713 INFO L82 PathProgramCache]: Analyzing trace with hash -53602608, now seen corresponding path program 2 times [2020-10-11 19:59:34,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:59:34,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429767424] [2020-10-11 19:59:34,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:59:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:59:34,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:59:34,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429767424] [2020-10-11 19:59:34,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:59:34,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 19:59:34,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533689164] [2020-10-11 19:59:34,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 19:59:34,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:59:34,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 19:59:34,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-11 19:59:35,075 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 86 [2020-10-11 19:59:35,076 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 67 transitions, 214 flow. Second operand 5 states. [2020-10-11 19:59:35,076 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:59:35,077 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 86 [2020-10-11 19:59:35,077 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:59:35,147 INFO L129 PetriNetUnfolder]: 11/159 cut-off events. [2020-10-11 19:59:35,148 INFO L130 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2020-10-11 19:59:35,149 INFO L80 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 159 events. 11/159 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 438 event pairs, 1 based on Foata normal form. 1/155 useless extension candidates. Maximal degree in co-relation 225. Up to 27 conditions per place. [2020-10-11 19:59:35,150 INFO L132 encePairwiseOnDemand]: 79/86 looper letters, 19 selfloop transitions, 6 changer transitions 0/74 dead transitions. [2020-10-11 19:59:35,150 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 74 transitions, 295 flow [2020-10-11 19:59:35,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 19:59:35,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-11 19:59:35,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 453 transitions. [2020-10-11 19:59:35,152 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.877906976744186 [2020-10-11 19:59:35,152 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 453 transitions. [2020-10-11 19:59:35,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 453 transitions. [2020-10-11 19:59:35,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:59:35,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 453 transitions. [2020-10-11 19:59:35,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-11 19:59:35,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-11 19:59:35,156 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-11 19:59:35,156 INFO L185 Difference]: Start difference. First operand has 80 places, 67 transitions, 214 flow. Second operand 6 states and 453 transitions. [2020-10-11 19:59:35,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 74 transitions, 295 flow [2020-10-11 19:59:35,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 74 transitions, 271 flow, removed 0 selfloop flow, removed 9 redundant places. [2020-10-11 19:59:35,160 INFO L241 Difference]: Finished difference. Result has 79 places, 71 transitions, 239 flow [2020-10-11 19:59:35,160 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=239, PETRI_PLACES=79, PETRI_TRANSITIONS=71} [2020-10-11 19:59:35,160 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 16 predicate places. [2020-10-11 19:59:35,161 INFO L481 AbstractCegarLoop]: Abstraction has has 79 places, 71 transitions, 239 flow [2020-10-11 19:59:35,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 19:59:35,161 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:59:35,161 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:59:35,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 19:59:35,161 INFO L429 AbstractCegarLoop]: === Iteration 4 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 19:59:35,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:59:35,162 INFO L82 PathProgramCache]: Analyzing trace with hash -21817880, now seen corresponding path program 3 times [2020-10-11 19:59:35,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:59:35,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093434130] [2020-10-11 19:59:35,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:59:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:59:35,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:59:35,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093434130] [2020-10-11 19:59:35,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:59:35,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-11 19:59:35,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430154855] [2020-10-11 19:59:35,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 19:59:35,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:59:35,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 19:59:35,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-11 19:59:36,343 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 86 [2020-10-11 19:59:36,344 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 71 transitions, 239 flow. Second operand 8 states. [2020-10-11 19:59:36,344 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:59:36,344 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 86 [2020-10-11 19:59:36,344 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:59:36,515 INFO L129 PetriNetUnfolder]: 14/169 cut-off events. [2020-10-11 19:59:36,515 INFO L130 PetriNetUnfolder]: For 110/114 co-relation queries the response was YES. [2020-10-11 19:59:36,516 INFO L80 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 169 events. 14/169 cut-off events. For 110/114 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 514 event pairs, 0 based on Foata normal form. 2/166 useless extension candidates. Maximal degree in co-relation 267. Up to 22 conditions per place. [2020-10-11 19:59:36,517 INFO L132 encePairwiseOnDemand]: 76/86 looper letters, 24 selfloop transitions, 22 changer transitions 0/88 dead transitions. [2020-10-11 19:59:36,517 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 88 transitions, 407 flow [2020-10-11 19:59:36,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-11 19:59:36,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-11 19:59:36,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 770 transitions. [2020-10-11 19:59:36,521 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7461240310077519 [2020-10-11 19:59:36,521 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 770 transitions. [2020-10-11 19:59:36,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 770 transitions. [2020-10-11 19:59:36,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:59:36,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 770 transitions. [2020-10-11 19:59:36,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 13 states. [2020-10-11 19:59:36,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 13 states. [2020-10-11 19:59:36,527 INFO L81 ComplementDD]: Finished complementDD. Result 13 states. [2020-10-11 19:59:36,527 INFO L185 Difference]: Start difference. First operand has 79 places, 71 transitions, 239 flow. Second operand 12 states and 770 transitions. [2020-10-11 19:59:36,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 88 transitions, 407 flow [2020-10-11 19:59:36,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 88 transitions, 379 flow, removed 10 selfloop flow, removed 2 redundant places. [2020-10-11 19:59:36,532 INFO L241 Difference]: Finished difference. Result has 92 places, 79 transitions, 331 flow [2020-10-11 19:59:36,533 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=331, PETRI_PLACES=92, PETRI_TRANSITIONS=79} [2020-10-11 19:59:36,533 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 29 predicate places. [2020-10-11 19:59:36,533 INFO L481 AbstractCegarLoop]: Abstraction has has 92 places, 79 transitions, 331 flow [2020-10-11 19:59:36,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 19:59:36,533 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:59:36,534 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:59:36,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 19:59:36,534 INFO L429 AbstractCegarLoop]: === Iteration 5 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 19:59:36,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:59:36,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1685954497, now seen corresponding path program 1 times [2020-10-11 19:59:36,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:59:36,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237917244] [2020-10-11 19:59:36,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:59:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:59:37,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:59:37,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237917244] [2020-10-11 19:59:37,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:59:37,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2020-10-11 19:59:37,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181156759] [2020-10-11 19:59:37,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-11 19:59:37,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:59:37,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-11 19:59:37,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=645, Unknown=0, NotChecked=0, Total=702 [2020-10-11 19:59:58,889 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 86 [2020-10-11 19:59:58,891 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 79 transitions, 331 flow. Second operand 27 states. [2020-10-11 19:59:58,891 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:59:58,891 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 86 [2020-10-11 19:59:58,891 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 20:00:00,880 INFO L129 PetriNetUnfolder]: 51/430 cut-off events. [2020-10-11 20:00:00,881 INFO L130 PetriNetUnfolder]: For 279/279 co-relation queries the response was YES. [2020-10-11 20:00:00,883 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1064 conditions, 430 events. 51/430 cut-off events. For 279/279 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2302 event pairs, 0 based on Foata normal form. 1/420 useless extension candidates. Maximal degree in co-relation 996. Up to 94 conditions per place. [2020-10-11 20:00:00,885 INFO L132 encePairwiseOnDemand]: 50/86 looper letters, 68 selfloop transitions, 14 changer transitions 42/151 dead transitions. [2020-10-11 20:00:00,886 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 151 transitions, 830 flow [2020-10-11 20:00:00,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-11 20:00:00,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-11 20:00:00,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1318 transitions. [2020-10-11 20:00:00,891 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.4142049025769956 [2020-10-11 20:00:00,892 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1318 transitions. [2020-10-11 20:00:00,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1318 transitions. [2020-10-11 20:00:00,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 20:00:00,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1318 transitions. [2020-10-11 20:00:00,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 38 states. [2020-10-11 20:00:00,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 38 states. [2020-10-11 20:00:00,901 INFO L81 ComplementDD]: Finished complementDD. Result 38 states. [2020-10-11 20:00:00,902 INFO L185 Difference]: Start difference. First operand has 92 places, 79 transitions, 331 flow. Second operand 37 states and 1318 transitions. [2020-10-11 20:00:00,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 151 transitions, 830 flow [2020-10-11 20:00:00,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 151 transitions, 814 flow, removed 3 selfloop flow, removed 1 redundant places. [2020-10-11 20:00:00,911 INFO L241 Difference]: Finished difference. Result has 157 places, 84 transitions, 464 flow [2020-10-11 20:00:00,911 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=464, PETRI_PLACES=157, PETRI_TRANSITIONS=84} [2020-10-11 20:00:00,911 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 94 predicate places. [2020-10-11 20:00:00,912 INFO L481 AbstractCegarLoop]: Abstraction has has 157 places, 84 transitions, 464 flow [2020-10-11 20:00:00,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-11 20:00:00,912 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 20:00:00,912 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 20:00:00,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 20:00:00,912 INFO L429 AbstractCegarLoop]: === Iteration 6 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 20:00:00,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 20:00:00,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1279193023, now seen corresponding path program 2 times [2020-10-11 20:00:00,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 20:00:00,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154310944] [2020-10-11 20:00:00,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 20:00:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 20:00:01,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 20:00:01,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154310944] [2020-10-11 20:00:01,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 20:00:01,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2020-10-11 20:00:01,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767487366] [2020-10-11 20:00:01,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-11 20:00:01,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 20:00:01,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-11 20:00:01,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=645, Unknown=0, NotChecked=0, Total=702 [2020-10-11 20:00:24,082 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 86 [2020-10-11 20:00:24,083 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 84 transitions, 464 flow. Second operand 27 states. [2020-10-11 20:00:24,084 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 20:00:24,084 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 86 [2020-10-11 20:00:24,084 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 20:00:26,227 INFO L129 PetriNetUnfolder]: 51/444 cut-off events. [2020-10-11 20:00:26,228 INFO L130 PetriNetUnfolder]: For 553/553 co-relation queries the response was YES. [2020-10-11 20:00:26,234 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1468 conditions, 444 events. 51/444 cut-off events. For 553/553 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2420 event pairs, 0 based on Foata normal form. 1/433 useless extension candidates. Maximal degree in co-relation 1421. Up to 138 conditions per place. [2020-10-11 20:00:26,236 INFO L132 encePairwiseOnDemand]: 50/86 looper letters, 68 selfloop transitions, 12 changer transitions 45/152 dead transitions. [2020-10-11 20:00:26,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 152 transitions, 1076 flow [2020-10-11 20:00:26,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-11 20:00:26,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-11 20:00:26,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1287 transitions. [2020-10-11 20:00:26,245 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.41569767441860467 [2020-10-11 20:00:26,245 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1287 transitions. [2020-10-11 20:00:26,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1287 transitions. [2020-10-11 20:00:26,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 20:00:26,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1287 transitions. [2020-10-11 20:00:26,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 37 states. [2020-10-11 20:00:26,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 37 states. [2020-10-11 20:00:26,256 INFO L81 ComplementDD]: Finished complementDD. Result 37 states. [2020-10-11 20:00:26,257 INFO L185 Difference]: Start difference. First operand has 157 places, 84 transitions, 464 flow. Second operand 36 states and 1287 transitions. [2020-10-11 20:00:26,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 152 transitions, 1076 flow [2020-10-11 20:00:26,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 152 transitions, 885 flow, removed 82 selfloop flow, removed 32 redundant places. [2020-10-11 20:00:26,269 INFO L241 Difference]: Finished difference. Result has 164 places, 86 transitions, 512 flow [2020-10-11 20:00:26,270 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=512, PETRI_PLACES=164, PETRI_TRANSITIONS=86} [2020-10-11 20:00:26,270 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 101 predicate places. [2020-10-11 20:00:26,270 INFO L481 AbstractCegarLoop]: Abstraction has has 164 places, 86 transitions, 512 flow [2020-10-11 20:00:26,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-11 20:00:26,270 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 20:00:26,271 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 20:00:26,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 20:00:26,271 INFO L429 AbstractCegarLoop]: === Iteration 7 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 20:00:26,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 20:00:26,272 INFO L82 PathProgramCache]: Analyzing trace with hash -415854295, now seen corresponding path program 3 times [2020-10-11 20:00:26,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 20:00:26,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537915856] [2020-10-11 20:00:26,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 20:00:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 20:00:26,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 20:00:26,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537915856] [2020-10-11 20:00:26,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 20:00:26,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2020-10-11 20:00:26,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262592152] [2020-10-11 20:00:26,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-11 20:00:26,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 20:00:26,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-11 20:00:26,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=646, Unknown=0, NotChecked=0, Total=702 [2020-10-11 20:00:49,936 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 86 [2020-10-11 20:00:49,937 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 86 transitions, 512 flow. Second operand 27 states. [2020-10-11 20:00:49,937 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 20:00:49,937 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 86 [2020-10-11 20:00:49,937 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 20:00:52,422 INFO L129 PetriNetUnfolder]: 49/434 cut-off events. [2020-10-11 20:00:52,423 INFO L130 PetriNetUnfolder]: For 777/779 co-relation queries the response was YES. [2020-10-11 20:00:52,425 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1514 conditions, 434 events. 49/434 cut-off events. For 777/779 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2350 event pairs, 0 based on Foata normal form. 1/424 useless extension candidates. Maximal degree in co-relation 1462. Up to 96 conditions per place. [2020-10-11 20:00:52,427 INFO L132 encePairwiseOnDemand]: 50/86 looper letters, 67 selfloop transitions, 13 changer transitions 47/154 dead transitions. [2020-10-11 20:00:52,428 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 154 transitions, 1149 flow [2020-10-11 20:00:52,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-11 20:00:52,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-11 20:00:52,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1284 transitions. [2020-10-11 20:00:52,431 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.41472868217054265 [2020-10-11 20:00:52,431 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1284 transitions. [2020-10-11 20:00:52,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1284 transitions. [2020-10-11 20:00:52,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 20:00:52,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1284 transitions. [2020-10-11 20:00:52,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 37 states. [2020-10-11 20:00:52,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 37 states. [2020-10-11 20:00:52,438 INFO L81 ComplementDD]: Finished complementDD. Result 37 states. [2020-10-11 20:00:52,438 INFO L185 Difference]: Start difference. First operand has 164 places, 86 transitions, 512 flow. Second operand 36 states and 1284 transitions. [2020-10-11 20:00:52,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 154 transitions, 1149 flow [2020-10-11 20:00:52,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 154 transitions, 944 flow, removed 95 selfloop flow, removed 32 redundant places. [2020-10-11 20:00:52,448 INFO L241 Difference]: Finished difference. Result has 166 places, 86 transitions, 538 flow [2020-10-11 20:00:52,448 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=538, PETRI_PLACES=166, PETRI_TRANSITIONS=86} [2020-10-11 20:00:52,449 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 103 predicate places. [2020-10-11 20:00:52,449 INFO L481 AbstractCegarLoop]: Abstraction has has 166 places, 86 transitions, 538 flow [2020-10-11 20:00:52,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-11 20:00:52,449 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 20:00:52,449 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 20:00:52,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 20:00:52,450 INFO L429 AbstractCegarLoop]: === Iteration 8 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 20:00:52,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 20:00:52,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1897204383, now seen corresponding path program 4 times [2020-10-11 20:00:52,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 20:00:52,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818657417] [2020-10-11 20:00:52,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 20:00:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 20:00:53,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 20:00:53,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818657417] [2020-10-11 20:00:53,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 20:00:53,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2020-10-11 20:00:53,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408224849] [2020-10-11 20:00:53,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-11 20:00:53,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 20:00:53,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-11 20:00:53,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=646, Unknown=0, NotChecked=0, Total=702 [2020-10-11 20:01:16,889 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 86 [2020-10-11 20:01:16,890 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 86 transitions, 538 flow. Second operand 27 states. [2020-10-11 20:01:16,890 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 20:01:16,890 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 86 [2020-10-11 20:01:16,890 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 20:01:18,894 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-10-11 20:01:19,460 INFO L129 PetriNetUnfolder]: 38/313 cut-off events. [2020-10-11 20:01:19,461 INFO L130 PetriNetUnfolder]: For 884/886 co-relation queries the response was YES. [2020-10-11 20:01:19,462 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1175 conditions, 313 events. 38/313 cut-off events. For 884/886 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1372 event pairs, 1 based on Foata normal form. 1/307 useless extension candidates. Maximal degree in co-relation 1123. Up to 56 conditions per place. [2020-10-11 20:01:19,464 INFO L132 encePairwiseOnDemand]: 50/86 looper letters, 59 selfloop transitions, 8 changer transitions 54/142 dead transitions. [2020-10-11 20:01:19,464 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 142 transitions, 1041 flow [2020-10-11 20:01:19,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-11 20:01:19,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-11 20:01:19,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1284 transitions. [2020-10-11 20:01:19,467 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.41472868217054265 [2020-10-11 20:01:19,467 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1284 transitions. [2020-10-11 20:01:19,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1284 transitions. [2020-10-11 20:01:19,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 20:01:19,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1284 transitions. [2020-10-11 20:01:19,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 37 states. [2020-10-11 20:01:19,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 37 states. [2020-10-11 20:01:19,475 INFO L81 ComplementDD]: Finished complementDD. Result 37 states. [2020-10-11 20:01:19,475 INFO L185 Difference]: Start difference. First operand has 166 places, 86 transitions, 538 flow. Second operand 36 states and 1284 transitions. [2020-10-11 20:01:19,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 142 transitions, 1041 flow [2020-10-11 20:01:19,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 142 transitions, 835 flow, removed 87 selfloop flow, removed 35 redundant places. [2020-10-11 20:01:19,489 INFO L241 Difference]: Finished difference. Result has 167 places, 71 transitions, 386 flow [2020-10-11 20:01:19,489 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=386, PETRI_PLACES=167, PETRI_TRANSITIONS=71} [2020-10-11 20:01:19,490 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 104 predicate places. [2020-10-11 20:01:19,490 INFO L481 AbstractCegarLoop]: Abstraction has has 167 places, 71 transitions, 386 flow [2020-10-11 20:01:19,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-11 20:01:19,490 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 20:01:19,490 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 20:01:19,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 20:01:19,491 INFO L429 AbstractCegarLoop]: === Iteration 9 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 20:01:19,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 20:01:19,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1762597177, now seen corresponding path program 5 times [2020-10-11 20:01:19,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 20:01:19,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121766163] [2020-10-11 20:01:19,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 20:01:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 20:01:20,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 20:01:20,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121766163] [2020-10-11 20:01:20,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 20:01:20,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2020-10-11 20:01:20,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160176111] [2020-10-11 20:01:20,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-11 20:01:20,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 20:01:20,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-11 20:01:20,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=646, Unknown=0, NotChecked=0, Total=702 [2020-10-11 20:01:43,880 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 86 [2020-10-11 20:01:43,881 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 71 transitions, 386 flow. Second operand 27 states. [2020-10-11 20:01:43,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 20:01:43,882 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 86 [2020-10-11 20:01:43,882 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 20:01:45,981 INFO L129 PetriNetUnfolder]: 30/212 cut-off events. [2020-10-11 20:01:45,981 INFO L130 PetriNetUnfolder]: For 687/687 co-relation queries the response was YES. [2020-10-11 20:01:45,983 INFO L80 FinitePrefix]: Finished finitePrefix Result has 809 conditions, 212 events. 30/212 cut-off events. For 687/687 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 703 event pairs, 2 based on Foata normal form. 1/208 useless extension candidates. Maximal degree in co-relation 759. Up to 45 conditions per place. [2020-10-11 20:01:45,985 INFO L132 encePairwiseOnDemand]: 50/86 looper letters, 34 selfloop transitions, 24 changer transitions 28/107 dead transitions. [2020-10-11 20:01:45,985 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 107 transitions, 840 flow [2020-10-11 20:01:45,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-11 20:01:45,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-11 20:01:45,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1329 transitions. [2020-10-11 20:01:45,989 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.4066707466340269 [2020-10-11 20:01:45,989 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1329 transitions. [2020-10-11 20:01:45,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1329 transitions. [2020-10-11 20:01:45,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 20:01:45,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1329 transitions. [2020-10-11 20:01:45,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 39 states. [2020-10-11 20:01:45,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 39 states. [2020-10-11 20:01:45,995 INFO L81 ComplementDD]: Finished complementDD. Result 39 states. [2020-10-11 20:01:45,996 INFO L185 Difference]: Start difference. First operand has 167 places, 71 transitions, 386 flow. Second operand 38 states and 1329 transitions. [2020-10-11 20:01:45,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 107 transitions, 840 flow [2020-10-11 20:01:46,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 107 transitions, 573 flow, removed 64 selfloop flow, removed 47 redundant places. [2020-10-11 20:01:46,002 INFO L241 Difference]: Finished difference. Result has 140 places, 73 transitions, 358 flow [2020-10-11 20:01:46,002 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=358, PETRI_PLACES=140, PETRI_TRANSITIONS=73} [2020-10-11 20:01:46,003 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 77 predicate places. [2020-10-11 20:01:46,003 INFO L481 AbstractCegarLoop]: Abstraction has has 140 places, 73 transitions, 358 flow [2020-10-11 20:01:46,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-11 20:01:46,003 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 20:01:46,003 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 20:01:46,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 20:01:46,004 INFO L429 AbstractCegarLoop]: === Iteration 10 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 20:01:46,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 20:01:46,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1383196013, now seen corresponding path program 6 times [2020-10-11 20:01:46,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 20:01:46,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431559615] [2020-10-11 20:01:46,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 20:01:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 20:01:46,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 20:01:46,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431559615] [2020-10-11 20:01:46,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 20:01:46,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2020-10-11 20:01:46,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912797103] [2020-10-11 20:01:46,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-11 20:01:46,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 20:01:46,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-11 20:01:46,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=645, Unknown=0, NotChecked=0, Total=702 [2020-10-11 20:02:06,123 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 86 [2020-10-11 20:02:06,124 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 73 transitions, 358 flow. Second operand 27 states. [2020-10-11 20:02:06,124 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 20:02:06,125 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 86 [2020-10-11 20:02:06,125 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 20:02:08,149 INFO L129 PetriNetUnfolder]: 30/233 cut-off events. [2020-10-11 20:02:08,150 INFO L130 PetriNetUnfolder]: For 395/395 co-relation queries the response was YES. [2020-10-11 20:02:08,152 INFO L80 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 233 events. 30/233 cut-off events. For 395/395 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 827 event pairs, 2 based on Foata normal form. 1/229 useless extension candidates. Maximal degree in co-relation 775. Up to 49 conditions per place. [2020-10-11 20:02:08,153 INFO L132 encePairwiseOnDemand]: 50/86 looper letters, 55 selfloop transitions, 13 changer transitions 37/125 dead transitions. [2020-10-11 20:02:08,154 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 125 transitions, 841 flow [2020-10-11 20:02:08,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-11 20:02:08,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-11 20:02:08,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1313 transitions. [2020-10-11 20:02:08,168 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.4126335637963545 [2020-10-11 20:02:08,169 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1313 transitions. [2020-10-11 20:02:08,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1313 transitions. [2020-10-11 20:02:08,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 20:02:08,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1313 transitions. [2020-10-11 20:02:08,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 38 states. [2020-10-11 20:02:08,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 38 states. [2020-10-11 20:02:08,182 INFO L81 ComplementDD]: Finished complementDD. Result 38 states. [2020-10-11 20:02:08,183 INFO L185 Difference]: Start difference. First operand has 140 places, 73 transitions, 358 flow. Second operand 37 states and 1313 transitions. [2020-10-11 20:02:08,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 125 transitions, 841 flow [2020-10-11 20:02:08,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 125 transitions, 657 flow, removed 47 selfloop flow, removed 33 redundant places. [2020-10-11 20:02:08,189 INFO L241 Difference]: Finished difference. Result has 148 places, 71 transitions, 354 flow [2020-10-11 20:02:08,190 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=354, PETRI_PLACES=148, PETRI_TRANSITIONS=71} [2020-10-11 20:02:08,190 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 85 predicate places. [2020-10-11 20:02:08,190 INFO L481 AbstractCegarLoop]: Abstraction has has 148 places, 71 transitions, 354 flow [2020-10-11 20:02:08,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-11 20:02:08,191 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 20:02:08,191 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 20:02:08,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-11 20:02:08,191 INFO L429 AbstractCegarLoop]: === Iteration 11 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 20:02:08,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 20:02:08,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1710662913, now seen corresponding path program 7 times [2020-10-11 20:02:08,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 20:02:08,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141316643] [2020-10-11 20:02:08,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 20:02:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 20:02:08,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 20:02:08,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141316643] [2020-10-11 20:02:08,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 20:02:08,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2020-10-11 20:02:08,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524491078] [2020-10-11 20:02:08,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-11 20:02:08,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 20:02:08,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-11 20:02:08,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=648, Unknown=0, NotChecked=0, Total=702 [2020-10-11 20:02:28,298 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 86 [2020-10-11 20:02:28,299 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 71 transitions, 354 flow. Second operand 27 states. [2020-10-11 20:02:28,299 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 20:02:28,300 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 86 [2020-10-11 20:02:28,300 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 20:02:30,400 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-10-11 20:02:31,001 INFO L129 PetriNetUnfolder]: 26/206 cut-off events. [2020-10-11 20:02:31,002 INFO L130 PetriNetUnfolder]: For 513/513 co-relation queries the response was YES. [2020-10-11 20:02:31,002 INFO L80 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 206 events. 26/206 cut-off events. For 513/513 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 691 event pairs, 1 based on Foata normal form. 1/202 useless extension candidates. Maximal degree in co-relation 686. Up to 49 conditions per place. [2020-10-11 20:02:31,004 INFO L132 encePairwiseOnDemand]: 50/86 looper letters, 36 selfloop transitions, 19 changer transitions 29/104 dead transitions. [2020-10-11 20:02:31,004 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 104 transitions, 757 flow [2020-10-11 20:02:31,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-11 20:02:31,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-11 20:02:31,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1260 transitions. [2020-10-11 20:02:31,009 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.4069767441860465 [2020-10-11 20:02:31,009 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1260 transitions. [2020-10-11 20:02:31,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1260 transitions. [2020-10-11 20:02:31,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 20:02:31,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1260 transitions. [2020-10-11 20:02:31,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 37 states. [2020-10-11 20:02:31,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 37 states. [2020-10-11 20:02:31,016 INFO L81 ComplementDD]: Finished complementDD. Result 37 states. [2020-10-11 20:02:31,016 INFO L185 Difference]: Start difference. First operand has 148 places, 71 transitions, 354 flow. Second operand 36 states and 1260 transitions. [2020-10-11 20:02:31,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 104 transitions, 757 flow [2020-10-11 20:02:31,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 104 transitions, 589 flow, removed 53 selfloop flow, removed 36 redundant places. [2020-10-11 20:02:31,021 INFO L241 Difference]: Finished difference. Result has 140 places, 71 transitions, 346 flow [2020-10-11 20:02:31,021 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=346, PETRI_PLACES=140, PETRI_TRANSITIONS=71} [2020-10-11 20:02:31,022 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 77 predicate places. [2020-10-11 20:02:31,022 INFO L481 AbstractCegarLoop]: Abstraction has has 140 places, 71 transitions, 346 flow [2020-10-11 20:02:31,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-11 20:02:31,022 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 20:02:31,022 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 20:02:31,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-11 20:02:31,023 INFO L429 AbstractCegarLoop]: === Iteration 12 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 20:02:31,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 20:02:31,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1537381931, now seen corresponding path program 8 times [2020-10-11 20:02:31,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 20:02:31,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864306558] [2020-10-11 20:02:31,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 20:02:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 20:02:31,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 20:02:31,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864306558] [2020-10-11 20:02:31,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 20:02:31,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2020-10-11 20:02:31,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447690262] [2020-10-11 20:02:31,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-11 20:02:31,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 20:02:31,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-11 20:02:31,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=645, Unknown=0, NotChecked=0, Total=702 [2020-10-11 20:02:56,302 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 86 [2020-10-11 20:02:56,303 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 71 transitions, 346 flow. Second operand 27 states. [2020-10-11 20:02:56,303 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 20:02:56,303 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 86 [2020-10-11 20:02:56,303 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 20:02:58,278 INFO L129 PetriNetUnfolder]: 25/222 cut-off events. [2020-10-11 20:02:58,278 INFO L130 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2020-10-11 20:02:58,279 INFO L80 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 222 events. 25/222 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 785 event pairs, 1 based on Foata normal form. 1/218 useless extension candidates. Maximal degree in co-relation 736. Up to 45 conditions per place. [2020-10-11 20:02:58,281 INFO L132 encePairwiseOnDemand]: 50/86 looper letters, 52 selfloop transitions, 14 changer transitions 35/120 dead transitions. [2020-10-11 20:02:58,281 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 120 transitions, 813 flow [2020-10-11 20:02:58,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-11 20:02:58,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-11 20:02:58,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1311 transitions. [2020-10-11 20:02:58,283 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.4120050282840981 [2020-10-11 20:02:58,284 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1311 transitions. [2020-10-11 20:02:58,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1311 transitions. [2020-10-11 20:02:58,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 20:02:58,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1311 transitions. [2020-10-11 20:02:58,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 38 states. [2020-10-11 20:02:58,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 38 states. [2020-10-11 20:02:58,289 INFO L81 ComplementDD]: Finished complementDD. Result 38 states. [2020-10-11 20:02:58,289 INFO L185 Difference]: Start difference. First operand has 140 places, 71 transitions, 346 flow. Second operand 37 states and 1311 transitions. [2020-10-11 20:02:58,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 120 transitions, 813 flow [2020-10-11 20:02:58,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 120 transitions, 627 flow, removed 55 selfloop flow, removed 34 redundant places. [2020-10-11 20:02:58,295 INFO L241 Difference]: Finished difference. Result has 145 places, 69 transitions, 338 flow [2020-10-11 20:02:58,295 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=338, PETRI_PLACES=145, PETRI_TRANSITIONS=69} [2020-10-11 20:02:58,295 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 82 predicate places. [2020-10-11 20:02:58,295 INFO L481 AbstractCegarLoop]: Abstraction has has 145 places, 69 transitions, 338 flow [2020-10-11 20:02:58,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-11 20:02:58,296 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 20:02:58,296 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 20:02:58,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-11 20:02:58,296 INFO L429 AbstractCegarLoop]: === Iteration 13 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 20:02:58,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 20:02:58,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1331360779, now seen corresponding path program 9 times [2020-10-11 20:02:58,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 20:02:58,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527297309] [2020-10-11 20:02:58,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 20:02:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 20:02:58,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 20:02:58,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527297309] [2020-10-11 20:02:58,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 20:02:58,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2020-10-11 20:02:58,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587573906] [2020-10-11 20:02:58,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-11 20:02:58,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 20:02:58,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-11 20:02:58,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=649, Unknown=0, NotChecked=0, Total=702 [2020-10-11 20:03:25,984 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 86 [2020-10-11 20:03:25,985 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 69 transitions, 338 flow. Second operand 27 states. [2020-10-11 20:03:25,985 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 20:03:25,985 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 86 [2020-10-11 20:03:25,985 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 20:03:27,748 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-11 20:03:28,035 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-11 20:03:28,195 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-10-11 20:03:28,814 INFO L129 PetriNetUnfolder]: 23/203 cut-off events. [2020-10-11 20:03:28,814 INFO L130 PetriNetUnfolder]: For 456/456 co-relation queries the response was YES. [2020-10-11 20:03:28,815 INFO L80 FinitePrefix]: Finished finitePrefix Result has 699 conditions, 203 events. 23/203 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 684 event pairs, 9 based on Foata normal form. 1/199 useless extension candidates. Maximal degree in co-relation 661. Up to 47 conditions per place. [2020-10-11 20:03:28,816 INFO L132 encePairwiseOnDemand]: 50/86 looper letters, 34 selfloop transitions, 17 changer transitions 32/102 dead transitions. [2020-10-11 20:03:28,816 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 102 transitions, 721 flow [2020-10-11 20:03:28,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-11 20:03:28,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-11 20:03:28,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1293 transitions. [2020-10-11 20:03:28,819 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.40634820867379007 [2020-10-11 20:03:28,819 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1293 transitions. [2020-10-11 20:03:28,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1293 transitions. [2020-10-11 20:03:28,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 20:03:28,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1293 transitions. [2020-10-11 20:03:28,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 38 states. [2020-10-11 20:03:28,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 38 states. [2020-10-11 20:03:28,825 INFO L81 ComplementDD]: Finished complementDD. Result 38 states. [2020-10-11 20:03:28,825 INFO L185 Difference]: Start difference. First operand has 145 places, 69 transitions, 338 flow. Second operand 37 states and 1293 transitions. [2020-10-11 20:03:28,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 102 transitions, 721 flow [2020-10-11 20:03:28,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 102 transitions, 561 flow, removed 52 selfloop flow, removed 35 redundant places. [2020-10-11 20:03:28,830 INFO L241 Difference]: Finished difference. Result has 142 places, 69 transitions, 338 flow [2020-10-11 20:03:28,831 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=338, PETRI_PLACES=142, PETRI_TRANSITIONS=69} [2020-10-11 20:03:28,831 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 79 predicate places. [2020-10-11 20:03:28,831 INFO L481 AbstractCegarLoop]: Abstraction has has 142 places, 69 transitions, 338 flow [2020-10-11 20:03:28,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-11 20:03:28,831 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 20:03:28,831 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 20:03:28,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-11 20:03:28,832 INFO L429 AbstractCegarLoop]: === Iteration 14 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 20:03:28,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 20:03:28,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1659946251, now seen corresponding path program 10 times [2020-10-11 20:03:28,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 20:03:28,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062193335] [2020-10-11 20:03:28,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 20:03:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 20:03:29,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 20:03:29,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062193335] [2020-10-11 20:03:29,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 20:03:29,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2020-10-11 20:03:29,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851025226] [2020-10-11 20:03:29,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-11 20:03:29,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 20:03:29,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-11 20:03:29,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=646, Unknown=0, NotChecked=0, Total=702 [2020-10-11 20:03:55,816 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 86 [2020-10-11 20:03:55,817 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 69 transitions, 338 flow. Second operand 27 states. [2020-10-11 20:03:55,817 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 20:03:55,817 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 86 [2020-10-11 20:03:55,817 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 20:03:57,479 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-11 20:03:57,941 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-10-11 20:03:58,572 INFO L129 PetriNetUnfolder]: 21/207 cut-off events. [2020-10-11 20:03:58,574 INFO L130 PetriNetUnfolder]: For 427/427 co-relation queries the response was YES. [2020-10-11 20:03:58,577 INFO L80 FinitePrefix]: Finished finitePrefix Result has 720 conditions, 207 events. 21/207 cut-off events. For 427/427 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 721 event pairs, 1 based on Foata normal form. 1/203 useless extension candidates. Maximal degree in co-relation 684. Up to 41 conditions per place. [2020-10-11 20:03:58,577 INFO L132 encePairwiseOnDemand]: 50/86 looper letters, 50 selfloop transitions, 15 changer transitions 32/116 dead transitions. [2020-10-11 20:03:58,577 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 116 transitions, 795 flow [2020-10-11 20:03:58,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-11 20:03:58,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-11 20:03:58,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1309 transitions. [2020-10-11 20:03:58,580 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.41137649277184163 [2020-10-11 20:03:58,580 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1309 transitions. [2020-10-11 20:03:58,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1309 transitions. [2020-10-11 20:03:58,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 20:03:58,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1309 transitions. [2020-10-11 20:03:58,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 38 states. [2020-10-11 20:03:58,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 38 states. [2020-10-11 20:03:58,593 INFO L81 ComplementDD]: Finished complementDD. Result 38 states. [2020-10-11 20:03:58,593 INFO L185 Difference]: Start difference. First operand has 142 places, 69 transitions, 338 flow. Second operand 37 states and 1309 transitions. [2020-10-11 20:03:58,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 116 transitions, 795 flow [2020-10-11 20:03:58,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 116 transitions, 615 flow, removed 58 selfloop flow, removed 34 redundant places. [2020-10-11 20:03:58,599 INFO L241 Difference]: Finished difference. Result has 144 places, 69 transitions, 342 flow [2020-10-11 20:03:58,600 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=342, PETRI_PLACES=144, PETRI_TRANSITIONS=69} [2020-10-11 20:03:58,600 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 81 predicate places. [2020-10-11 20:03:58,600 INFO L481 AbstractCegarLoop]: Abstraction has has 144 places, 69 transitions, 342 flow [2020-10-11 20:03:58,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-11 20:03:58,600 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 20:03:58,600 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 20:03:58,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-11 20:03:58,601 INFO L429 AbstractCegarLoop]: === Iteration 15 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 20:03:58,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 20:03:58,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1467806006, now seen corresponding path program 1 times [2020-10-11 20:03:58,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 20:03:58,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910062850] [2020-10-11 20:03:58,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 20:03:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 20:03:59,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 20:03:59,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910062850] [2020-10-11 20:03:59,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 20:03:59,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2020-10-11 20:03:59,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297822523] [2020-10-11 20:03:59,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-11 20:03:59,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 20:03:59,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-11 20:03:59,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=646, Unknown=0, NotChecked=0, Total=702 [2020-10-11 20:04:25,511 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 86 [2020-10-11 20:04:25,512 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 69 transitions, 342 flow. Second operand 27 states. [2020-10-11 20:04:25,513 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 20:04:25,513 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 86 [2020-10-11 20:04:25,513 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 20:04:27,169 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-11 20:04:27,605 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-10-11 20:04:28,180 INFO L129 PetriNetUnfolder]: 17/172 cut-off events. [2020-10-11 20:04:28,180 INFO L130 PetriNetUnfolder]: For 424/424 co-relation queries the response was YES. [2020-10-11 20:04:28,181 INFO L80 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 172 events. 17/172 cut-off events. For 424/424 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 514 event pairs, 1 based on Foata normal form. 1/170 useless extension candidates. Maximal degree in co-relation 564. Up to 34 conditions per place. [2020-10-11 20:04:28,182 INFO L132 encePairwiseOnDemand]: 50/86 looper letters, 27 selfloop transitions, 27 changer transitions 20/93 dead transitions. [2020-10-11 20:04:28,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 93 transitions, 654 flow [2020-10-11 20:04:28,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-11 20:04:28,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-11 20:04:28,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1254 transitions. [2020-10-11 20:04:28,183 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.4050387596899225 [2020-10-11 20:04:28,183 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1254 transitions. [2020-10-11 20:04:28,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1254 transitions. [2020-10-11 20:04:28,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 20:04:28,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1254 transitions. [2020-10-11 20:04:28,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 37 states. [2020-10-11 20:04:28,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 37 states. [2020-10-11 20:04:28,187 INFO L81 ComplementDD]: Finished complementDD. Result 37 states. [2020-10-11 20:04:28,187 INFO L185 Difference]: Start difference. First operand has 144 places, 69 transitions, 342 flow. Second operand 36 states and 1254 transitions. [2020-10-11 20:04:28,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 93 transitions, 654 flow [2020-10-11 20:04:28,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 93 transitions, 513 flow, removed 43 selfloop flow, removed 35 redundant places. [2020-10-11 20:04:28,191 INFO L241 Difference]: Finished difference. Result has 135 places, 71 transitions, 361 flow [2020-10-11 20:04:28,191 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=361, PETRI_PLACES=135, PETRI_TRANSITIONS=71} [2020-10-11 20:04:28,192 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 72 predicate places. [2020-10-11 20:04:28,192 INFO L481 AbstractCegarLoop]: Abstraction has has 135 places, 71 transitions, 361 flow [2020-10-11 20:04:28,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-11 20:04:28,192 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 20:04:28,192 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 20:04:28,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-11 20:04:28,193 INFO L429 AbstractCegarLoop]: === Iteration 16 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 20:04:28,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 20:04:28,193 INFO L82 PathProgramCache]: Analyzing trace with hash 316979031, now seen corresponding path program 11 times [2020-10-11 20:04:28,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 20:04:28,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481764424] [2020-10-11 20:04:28,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 20:04:28,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 20:04:28,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 20:04:28,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481764424] [2020-10-11 20:04:28,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 20:04:28,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2020-10-11 20:04:28,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631136464] [2020-10-11 20:04:28,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-11 20:04:28,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 20:04:28,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-11 20:04:28,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=650, Unknown=0, NotChecked=0, Total=702 [2020-10-11 20:04:52,890 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 86 [2020-10-11 20:04:52,891 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 71 transitions, 361 flow. Second operand 27 states. [2020-10-11 20:04:52,891 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 20:04:52,891 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 86 [2020-10-11 20:04:52,892 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 20:04:54,662 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-11 20:04:55,114 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-10-11 20:04:55,793 INFO L129 PetriNetUnfolder]: 17/177 cut-off events. [2020-10-11 20:04:55,793 INFO L130 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2020-10-11 20:04:55,794 INFO L80 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 177 events. 17/177 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 547 event pairs, 6 based on Foata normal form. 1/174 useless extension candidates. Maximal degree in co-relation 582. Up to 39 conditions per place. [2020-10-11 20:04:55,794 INFO L132 encePairwiseOnDemand]: 50/86 looper letters, 37 selfloop transitions, 13 changer transitions 33/100 dead transitions. [2020-10-11 20:04:55,795 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 100 transitions, 685 flow [2020-10-11 20:04:55,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-11 20:04:55,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-11 20:04:55,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1258 transitions. [2020-10-11 20:04:55,796 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.40633074935400515 [2020-10-11 20:04:55,796 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1258 transitions. [2020-10-11 20:04:55,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1258 transitions. [2020-10-11 20:04:55,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 20:04:55,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1258 transitions. [2020-10-11 20:04:55,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 37 states. [2020-10-11 20:04:55,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 37 states. [2020-10-11 20:04:55,801 INFO L81 ComplementDD]: Finished complementDD. Result 37 states. [2020-10-11 20:04:55,801 INFO L185 Difference]: Start difference. First operand has 135 places, 71 transitions, 361 flow. Second operand 36 states and 1258 transitions. [2020-10-11 20:04:55,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 100 transitions, 685 flow [2020-10-11 20:04:55,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 100 transitions, 556 flow, removed 30 selfloop flow, removed 31 redundant places. [2020-10-11 20:04:55,806 INFO L241 Difference]: Finished difference. Result has 147 places, 67 transitions, 326 flow [2020-10-11 20:04:55,806 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=326, PETRI_PLACES=147, PETRI_TRANSITIONS=67} [2020-10-11 20:04:55,807 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 84 predicate places. [2020-10-11 20:04:55,807 INFO L481 AbstractCegarLoop]: Abstraction has has 147 places, 67 transitions, 326 flow [2020-10-11 20:04:55,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-11 20:04:55,807 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 20:04:55,807 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 20:04:55,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-11 20:04:55,808 INFO L429 AbstractCegarLoop]: === Iteration 17 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 20:04:55,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 20:04:55,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1220467399, now seen corresponding path program 12 times [2020-10-11 20:04:55,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 20:04:55,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922254591] [2020-10-11 20:04:55,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 20:04:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 20:04:56,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 20:04:56,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922254591] [2020-10-11 20:04:56,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 20:04:56,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2020-10-11 20:04:56,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624847790] [2020-10-11 20:04:56,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-11 20:04:56,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 20:04:56,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-11 20:04:56,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=646, Unknown=0, NotChecked=0, Total=702 [2020-10-11 20:05:24,907 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 86 [2020-10-11 20:05:24,908 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 67 transitions, 326 flow. Second operand 27 states. [2020-10-11 20:05:24,908 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 20:05:24,908 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 86 [2020-10-11 20:05:24,908 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 20:05:26,670 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-11 20:05:27,001 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-11 20:05:27,174 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-10-11 20:05:27,336 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-11 20:05:27,834 INFO L129 PetriNetUnfolder]: 14/150 cut-off events. [2020-10-11 20:05:27,835 INFO L130 PetriNetUnfolder]: For 343/343 co-relation queries the response was YES. [2020-10-11 20:05:27,835 INFO L80 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 150 events. 14/150 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 410 event pairs, 1 based on Foata normal form. 1/148 useless extension candidates. Maximal degree in co-relation 498. Up to 25 conditions per place. [2020-10-11 20:05:27,836 INFO L132 encePairwiseOnDemand]: 50/86 looper letters, 35 selfloop transitions, 21 changer transitions 25/98 dead transitions. [2020-10-11 20:05:27,836 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 98 transitions, 669 flow [2020-10-11 20:05:27,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-11 20:05:27,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-11 20:05:27,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1330 transitions. [2020-10-11 20:05:27,837 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.4069767441860465 [2020-10-11 20:05:27,837 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1330 transitions. [2020-10-11 20:05:27,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1330 transitions. [2020-10-11 20:05:27,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 20:05:27,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1330 transitions. [2020-10-11 20:05:27,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 39 states. [2020-10-11 20:05:27,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 39 states. [2020-10-11 20:05:27,848 INFO L81 ComplementDD]: Finished complementDD. Result 39 states. [2020-10-11 20:05:27,848 INFO L185 Difference]: Start difference. First operand has 147 places, 67 transitions, 326 flow. Second operand 38 states and 1330 transitions. [2020-10-11 20:05:27,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 98 transitions, 669 flow [2020-10-11 20:05:27,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 98 transitions, 519 flow, removed 54 selfloop flow, removed 37 redundant places. [2020-10-11 20:05:27,853 INFO L241 Difference]: Finished difference. Result has 136 places, 65 transitions, 309 flow [2020-10-11 20:05:27,853 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=309, PETRI_PLACES=136, PETRI_TRANSITIONS=65} [2020-10-11 20:05:27,853 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 73 predicate places. [2020-10-11 20:05:27,853 INFO L481 AbstractCegarLoop]: Abstraction has has 136 places, 65 transitions, 309 flow [2020-10-11 20:05:27,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-11 20:05:27,854 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 20:05:27,854 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 20:05:27,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-11 20:05:27,854 INFO L429 AbstractCegarLoop]: === Iteration 18 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 20:05:27,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 20:05:27,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1010538955, now seen corresponding path program 13 times [2020-10-11 20:05:27,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 20:05:27,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107970649] [2020-10-11 20:05:27,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 20:05:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 20:05:28,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 20:05:28,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107970649] [2020-10-11 20:05:28,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 20:05:28,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2020-10-11 20:05:28,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357696270] [2020-10-11 20:05:28,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-11 20:05:28,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 20:05:28,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-11 20:05:28,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=646, Unknown=0, NotChecked=0, Total=702 [2020-10-11 20:05:58,180 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 86 [2020-10-11 20:05:58,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 65 transitions, 309 flow. Second operand 27 states. [2020-10-11 20:05:58,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 20:05:58,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 86 [2020-10-11 20:05:58,181 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 20:05:59,872 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-11 20:06:00,184 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-11 20:06:00,355 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-11 20:06:00,516 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-11 20:06:00,979 INFO L129 PetriNetUnfolder]: 10/124 cut-off events. [2020-10-11 20:06:00,979 INFO L130 PetriNetUnfolder]: For 300/300 co-relation queries the response was YES. [2020-10-11 20:06:00,979 INFO L80 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 124 events. 10/124 cut-off events. For 300/300 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 266 event pairs, 1 based on Foata normal form. 1/123 useless extension candidates. Maximal degree in co-relation 408. Up to 22 conditions per place. [2020-10-11 20:06:00,980 INFO L132 encePairwiseOnDemand]: 50/86 looper letters, 29 selfloop transitions, 21 changer transitions 24/89 dead transitions. [2020-10-11 20:06:00,980 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 89 transitions, 581 flow [2020-10-11 20:06:00,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-11 20:06:00,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-11 20:06:00,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1291 transitions. [2020-10-11 20:06:00,982 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.4057196731615336 [2020-10-11 20:06:00,982 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1291 transitions. [2020-10-11 20:06:00,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1291 transitions. [2020-10-11 20:06:00,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 20:06:00,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1291 transitions. [2020-10-11 20:06:00,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 38 states. [2020-10-11 20:06:00,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 38 states. [2020-10-11 20:06:00,987 INFO L81 ComplementDD]: Finished complementDD. Result 38 states. [2020-10-11 20:06:00,987 INFO L185 Difference]: Start difference. First operand has 136 places, 65 transitions, 309 flow. Second operand 37 states and 1291 transitions. [2020-10-11 20:06:00,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 89 transitions, 581 flow [2020-10-11 20:06:00,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 89 transitions, 427 flow, removed 46 selfloop flow, removed 39 redundant places. [2020-10-11 20:06:00,989 INFO L241 Difference]: Finished difference. Result has 129 places, 61 transitions, 261 flow [2020-10-11 20:06:00,989 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=261, PETRI_PLACES=129, PETRI_TRANSITIONS=61} [2020-10-11 20:06:00,990 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 66 predicate places. [2020-10-11 20:06:00,990 INFO L481 AbstractCegarLoop]: Abstraction has has 129 places, 61 transitions, 261 flow [2020-10-11 20:06:00,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-11 20:06:00,990 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 20:06:00,990 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 20:06:00,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-11 20:06:00,990 INFO L429 AbstractCegarLoop]: === Iteration 19 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 20:06:00,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 20:06:00,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1026361528, now seen corresponding path program 2 times [2020-10-11 20:06:00,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 20:06:00,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182720002] [2020-10-11 20:06:00,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 20:06:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 20:06:01,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 20:06:01,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182720002] [2020-10-11 20:06:01,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 20:06:01,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2020-10-11 20:06:01,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373227404] [2020-10-11 20:06:01,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-11 20:06:01,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 20:06:01,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-11 20:06:01,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=646, Unknown=0, NotChecked=0, Total=702 [2020-10-11 20:06:27,703 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 86 [2020-10-11 20:06:27,704 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 61 transitions, 261 flow. Second operand 27 states. [2020-10-11 20:06:27,704 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 20:06:27,704 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 86 [2020-10-11 20:06:27,704 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 20:06:29,283 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-11 20:06:29,767 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-11 20:06:29,936 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-11 20:06:30,078 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-11 20:06:30,249 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-11 20:06:30,662 INFO L129 PetriNetUnfolder]: 7/95 cut-off events. [2020-10-11 20:06:30,663 INFO L130 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2020-10-11 20:06:30,663 INFO L80 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 95 events. 7/95 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 127 event pairs, 1 based on Foata normal form. 1/95 useless extension candidates. Maximal degree in co-relation 284. Up to 24 conditions per place. [2020-10-11 20:06:30,663 INFO L132 encePairwiseOnDemand]: 51/86 looper letters, 21 selfloop transitions, 26 changer transitions 17/79 dead transitions. [2020-10-11 20:06:30,664 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 79 transitions, 506 flow [2020-10-11 20:06:30,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-11 20:06:30,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-11 20:06:30,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1250 transitions. [2020-10-11 20:06:30,665 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.4037467700258398 [2020-10-11 20:06:30,666 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1250 transitions. [2020-10-11 20:06:30,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1250 transitions. [2020-10-11 20:06:30,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 20:06:30,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1250 transitions. [2020-10-11 20:06:30,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 37 states. [2020-10-11 20:06:30,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 37 states. [2020-10-11 20:06:30,671 INFO L81 ComplementDD]: Finished complementDD. Result 37 states. [2020-10-11 20:06:30,671 INFO L185 Difference]: Start difference. First operand has 129 places, 61 transitions, 261 flow. Second operand 36 states and 1250 transitions. [2020-10-11 20:06:30,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 79 transitions, 506 flow [2020-10-11 20:06:30,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 79 transitions, 379 flow, removed 27 selfloop flow, removed 38 redundant places. [2020-10-11 20:06:30,674 INFO L241 Difference]: Finished difference. Result has 118 places, 61 transitions, 256 flow [2020-10-11 20:06:30,674 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=256, PETRI_PLACES=118, PETRI_TRANSITIONS=61} [2020-10-11 20:06:30,674 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 55 predicate places. [2020-10-11 20:06:30,674 INFO L481 AbstractCegarLoop]: Abstraction has has 118 places, 61 transitions, 256 flow [2020-10-11 20:06:30,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-11 20:06:30,675 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 20:06:30,675 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 20:06:30,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-11 20:06:30,675 INFO L429 AbstractCegarLoop]: === Iteration 20 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 20:06:30,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 20:06:30,676 INFO L82 PathProgramCache]: Analyzing trace with hash -412323785, now seen corresponding path program 14 times [2020-10-11 20:06:30,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 20:06:30,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490212276] [2020-10-11 20:06:30,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 20:06:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 20:06:31,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 20:06:31,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490212276] [2020-10-11 20:06:31,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 20:06:31,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2020-10-11 20:06:31,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792469160] [2020-10-11 20:06:31,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-11 20:06:31,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 20:06:31,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-11 20:06:31,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=646, Unknown=0, NotChecked=0, Total=702 [2020-10-11 20:07:02,644 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 86 [2020-10-11 20:07:02,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 61 transitions, 256 flow. Second operand 27 states. [2020-10-11 20:07:02,645 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 20:07:02,645 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 86 [2020-10-11 20:07:02,645 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 20:07:04,216 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-11 20:07:04,394 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-11 20:07:04,827 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-11 20:07:04,998 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-11 20:07:05,168 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-11 20:07:05,657 INFO L129 PetriNetUnfolder]: 5/94 cut-off events. [2020-10-11 20:07:05,657 INFO L130 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2020-10-11 20:07:05,657 INFO L80 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 94 events. 5/94 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 122 event pairs, 1 based on Foata normal form. 1/94 useless extension candidates. Maximal degree in co-relation 275. Up to 22 conditions per place. [2020-10-11 20:07:05,658 INFO L132 encePairwiseOnDemand]: 50/86 looper letters, 23 selfloop transitions, 24 changer transitions 19/81 dead transitions. [2020-10-11 20:07:05,658 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 81 transitions, 491 flow [2020-10-11 20:07:05,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-11 20:07:05,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-11 20:07:05,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1321 transitions. [2020-10-11 20:07:05,659 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.40422276621787023 [2020-10-11 20:07:05,660 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1321 transitions. [2020-10-11 20:07:05,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1321 transitions. [2020-10-11 20:07:05,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 20:07:05,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1321 transitions. [2020-10-11 20:07:05,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 39 states. [2020-10-11 20:07:05,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 39 states. [2020-10-11 20:07:05,664 INFO L81 ComplementDD]: Finished complementDD. Result 39 states. [2020-10-11 20:07:05,664 INFO L185 Difference]: Start difference. First operand has 118 places, 61 transitions, 256 flow. Second operand 38 states and 1321 transitions. [2020-10-11 20:07:05,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 81 transitions, 491 flow [2020-10-11 20:07:05,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 81 transitions, 389 flow, removed 19 selfloop flow, removed 33 redundant places. [2020-10-11 20:07:05,666 INFO L241 Difference]: Finished difference. Result has 123 places, 59 transitions, 246 flow [2020-10-11 20:07:05,667 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=246, PETRI_PLACES=123, PETRI_TRANSITIONS=59} [2020-10-11 20:07:05,667 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 60 predicate places. [2020-10-11 20:07:05,667 INFO L481 AbstractCegarLoop]: Abstraction has has 123 places, 59 transitions, 246 flow [2020-10-11 20:07:05,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-11 20:07:05,667 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 20:07:05,667 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 20:07:05,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-11 20:07:05,667 INFO L429 AbstractCegarLoop]: === Iteration 21 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 20:07:05,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 20:07:05,668 INFO L82 PathProgramCache]: Analyzing trace with hash 269779647, now seen corresponding path program 15 times [2020-10-11 20:07:05,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 20:07:05,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514884313] [2020-10-11 20:07:05,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 20:07:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 20:07:06,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 20:07:06,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514884313] [2020-10-11 20:07:06,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 20:07:06,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2020-10-11 20:07:06,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997916500] [2020-10-11 20:07:06,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-11 20:07:06,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 20:07:06,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-11 20:07:06,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=646, Unknown=0, NotChecked=0, Total=702 [2020-10-11 20:07:38,230 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 86 [2020-10-11 20:07:38,231 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 59 transitions, 246 flow. Second operand 27 states. [2020-10-11 20:07:38,231 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 20:07:38,231 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 86 [2020-10-11 20:07:38,231 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 20:07:39,819 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-11 20:07:40,102 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-11 20:07:40,284 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-11 20:07:40,462 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-11 20:07:40,624 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-11 20:07:41,045 INFO L129 PetriNetUnfolder]: 3/83 cut-off events. [2020-10-11 20:07:41,045 INFO L130 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2020-10-11 20:07:41,045 INFO L80 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 83 events. 3/83 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 81 event pairs, 2 based on Foata normal form. 1/83 useless extension candidates. Maximal degree in co-relation 233. Up to 21 conditions per place. [2020-10-11 20:07:41,046 INFO L132 encePairwiseOnDemand]: 51/86 looper letters, 18 selfloop transitions, 23 changer transitions 16/72 dead transitions. [2020-10-11 20:07:41,046 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 72 transitions, 425 flow [2020-10-11 20:07:41,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-11 20:07:41,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-11 20:07:41,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1213 transitions. [2020-10-11 20:07:41,049 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.40299003322259136 [2020-10-11 20:07:41,049 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1213 transitions. [2020-10-11 20:07:41,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1213 transitions. [2020-10-11 20:07:41,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 20:07:41,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1213 transitions. [2020-10-11 20:07:41,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 36 states. [2020-10-11 20:07:41,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 36 states. [2020-10-11 20:07:41,054 INFO L81 ComplementDD]: Finished complementDD. Result 36 states. [2020-10-11 20:07:41,054 INFO L185 Difference]: Start difference. First operand has 123 places, 59 transitions, 246 flow. Second operand 35 states and 1213 transitions. [2020-10-11 20:07:41,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 72 transitions, 425 flow [2020-10-11 20:07:41,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 72 transitions, 306 flow, removed 29 selfloop flow, removed 39 redundant places. [2020-10-11 20:07:41,057 INFO L241 Difference]: Finished difference. Result has 113 places, 56 transitions, 200 flow [2020-10-11 20:07:41,057 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=200, PETRI_PLACES=113, PETRI_TRANSITIONS=56} [2020-10-11 20:07:41,057 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 50 predicate places. [2020-10-11 20:07:41,057 INFO L481 AbstractCegarLoop]: Abstraction has has 113 places, 56 transitions, 200 flow [2020-10-11 20:07:41,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-11 20:07:41,057 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 20:07:41,057 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 20:07:41,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-11 20:07:41,058 INFO L429 AbstractCegarLoop]: === Iteration 22 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 20:07:41,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 20:07:41,058 INFO L82 PathProgramCache]: Analyzing trace with hash -242913703, now seen corresponding path program 16 times [2020-10-11 20:07:41,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 20:07:41,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783781636] [2020-10-11 20:07:41,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 20:07:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 20:07:42,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 20:07:42,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783781636] [2020-10-11 20:07:42,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 20:07:42,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2020-10-11 20:07:42,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50517025] [2020-10-11 20:07:42,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-11 20:07:42,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 20:07:42,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-11 20:07:42,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=804, Unknown=0, NotChecked=0, Total=870 [2020-10-11 20:08:11,845 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 86 [2020-10-11 20:08:11,846 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 56 transitions, 200 flow. Second operand 30 states. [2020-10-11 20:08:11,846 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 20:08:11,846 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 86 [2020-10-11 20:08:11,846 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 20:08:12,759 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-11 20:08:13,979 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-11 20:08:14,226 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-11 20:08:14,414 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-11 20:08:14,629 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-11 20:08:14,870 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2020-10-11 20:08:15,077 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-11 20:08:15,273 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-11 20:08:15,469 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-11 20:08:16,175 INFO L129 PetriNetUnfolder]: 4/62 cut-off events. [2020-10-11 20:08:16,176 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2020-10-11 20:08:16,176 INFO L80 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 62 events. 4/62 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 0 based on Foata normal form. 1/62 useless extension candidates. Maximal degree in co-relation 157. Up to 6 conditions per place. [2020-10-11 20:08:16,177 INFO L132 encePairwiseOnDemand]: 47/86 looper letters, 0 selfloop transitions, 0 changer transitions 61/61 dead transitions. [2020-10-11 20:08:16,177 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 61 transitions, 312 flow [2020-10-11 20:08:16,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-11 20:08:16,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-11 20:08:16,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 1351 transitions. [2020-10-11 20:08:16,178 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.374031007751938 [2020-10-11 20:08:16,178 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 1351 transitions. [2020-10-11 20:08:16,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 1351 transitions. [2020-10-11 20:08:16,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 20:08:16,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 1351 transitions. [2020-10-11 20:08:16,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 43 states. [2020-10-11 20:08:16,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 43 states. [2020-10-11 20:08:16,182 INFO L81 ComplementDD]: Finished complementDD. Result 43 states. [2020-10-11 20:08:16,183 INFO L185 Difference]: Start difference. First operand has 113 places, 56 transitions, 200 flow. Second operand 42 states and 1351 transitions. [2020-10-11 20:08:16,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 61 transitions, 312 flow [2020-10-11 20:08:16,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 61 transitions, 234 flow, removed 13 selfloop flow, removed 36 redundant places. [2020-10-11 20:08:16,184 INFO L241 Difference]: Finished difference. Result has 102 places, 0 transitions, 0 flow [2020-10-11 20:08:16,184 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=0, PETRI_PLACES=102, PETRI_TRANSITIONS=0} [2020-10-11 20:08:16,184 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 39 predicate places. [2020-10-11 20:08:16,184 INFO L481 AbstractCegarLoop]: Abstraction has has 102 places, 0 transitions, 0 flow [2020-10-11 20:08:16,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-11 20:08:16,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-11 20:08:16,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 08:08:16 BasicIcfg [2020-10-11 20:08:16,191 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 20:08:16,192 INFO L168 Benchmark]: Toolchain (without parser) took 534108.29 ms. Allocated memory was 258.5 MB in the beginning and 253.2 MB in the end (delta: -5.2 MB). Free memory was 214.4 MB in the beginning and 147.7 MB in the end (delta: 66.7 MB). Peak memory consumption was 61.5 MB. Max. memory is 14.2 GB. [2020-10-11 20:08:16,192 INFO L168 Benchmark]: CDTParser took 1.44 ms. Allocated memory is still 258.5 MB. Free memory is still 234.9 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 20:08:16,193 INFO L168 Benchmark]: CACSL2BoogieTranslator took 370.08 ms. Allocated memory was 258.5 MB in the beginning and 331.4 MB in the end (delta: 72.9 MB). Free memory was 214.4 MB in the beginning and 306.5 MB in the end (delta: -92.1 MB). Peak memory consumption was 27.4 MB. Max. memory is 14.2 GB. [2020-10-11 20:08:16,193 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.99 ms. Allocated memory is still 331.4 MB. Free memory was 306.5 MB in the beginning and 303.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 20:08:16,194 INFO L168 Benchmark]: Boogie Preprocessor took 23.18 ms. Allocated memory is still 331.4 MB. Free memory was 303.9 MB in the beginning and 302.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.2 GB. [2020-10-11 20:08:16,194 INFO L168 Benchmark]: RCFGBuilder took 391.37 ms. Allocated memory is still 331.4 MB. Free memory was 302.7 MB in the beginning and 280.2 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 14.2 GB. [2020-10-11 20:08:16,195 INFO L168 Benchmark]: TraceAbstraction took 533282.90 ms. Allocated memory was 331.4 MB in the beginning and 253.2 MB in the end (delta: -78.1 MB). Free memory was 277.7 MB in the beginning and 147.7 MB in the end (delta: 130.0 MB). Peak memory consumption was 51.9 MB. Max. memory is 14.2 GB. [2020-10-11 20:08:16,203 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.44 ms. Allocated memory is still 258.5 MB. Free memory is still 234.9 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 370.08 ms. Allocated memory was 258.5 MB in the beginning and 331.4 MB in the end (delta: 72.9 MB). Free memory was 214.4 MB in the beginning and 306.5 MB in the end (delta: -92.1 MB). Peak memory consumption was 27.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 34.99 ms. Allocated memory is still 331.4 MB. Free memory was 306.5 MB in the beginning and 303.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 23.18 ms. Allocated memory is still 331.4 MB. Free memory was 303.9 MB in the beginning and 302.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.2 GB. * RCFGBuilder took 391.37 ms. Allocated memory is still 331.4 MB. Free memory was 302.7 MB in the beginning and 280.2 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 14.2 GB. * TraceAbstraction took 533282.90 ms. Allocated memory was 331.4 MB in the beginning and 253.2 MB in the end (delta: -78.1 MB). Free memory was 277.7 MB in the beginning and 147.7 MB in the end (delta: 130.0 MB). Peak memory consumption was 51.9 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 45]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 69 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 533.0s, OverallIterations: 22, TraceHistogramMax: 1, AutomataDifference: 519.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9463 SDtfs, 13743 SDslu, 192947 SDs, 0 SdLazy, 116138 SolverSat, 1595 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 120.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1151 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8737 ImplicationChecksByTransitivity, 50.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=538occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 12.3s InterpolantComputationTime, 1135 NumberOfCodeBlocks, 1135 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1113 ConstructedInterpolants, 0 QuantifiedInterpolants, 601905 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...