/usr/bin/java -Xmx8000000000 -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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-array-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 23:00:37,595 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 23:00:37,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 23:00:37,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 23:00:37,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 23:00:37,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 23:00:37,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 23:00:37,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 23:00:37,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 23:00:37,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 23:00:37,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 23:00:37,661 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 23:00:37,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 23:00:37,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 23:00:37,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 23:00:37,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 23:00:37,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 23:00:37,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 23:00:37,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 23:00:37,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 23:00:37,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 23:00:37,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 23:00:37,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 23:00:37,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 23:00:37,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-05 23:00:37,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 23:00:37,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 23:00:37,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 23:00:37,699 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-05 23:00:37,720 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 23:00:37,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 23:00:37,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 23:00:37,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 23:00:37,722 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 23:00:37,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 23:00:37,723 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 23:00:37,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 23:00:37,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 23:00:37,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 23:00:37,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 23:00:37,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 23:00:37,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 23:00:37,724 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 23:00:37,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 23:00:37,724 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 23:00:37,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 23:00:37,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 23:00:37,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 23:00:37,725 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 23:00:37,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 23:00:37,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 23:00:37,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 23:00:37,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-05 23:00:37,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 23:00:37,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 23:00:37,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 23:00:37,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 23:00:37,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-05 23:00:37,727 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-05 23:00:38,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 23:00:38,071 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 23:00:38,076 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 23:00:38,077 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 23:00:38,078 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 23:00:38,079 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-array-1.i [2020-10-05 23:00:38,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42d8950ed/63c38a855d0b4894b69188fa597acfce/FLAGb4127f97c [2020-10-05 23:00:38,664 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 23:00:38,665 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-1.i [2020-10-05 23:00:38,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42d8950ed/63c38a855d0b4894b69188fa597acfce/FLAGb4127f97c [2020-10-05 23:00:38,952 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42d8950ed/63c38a855d0b4894b69188fa597acfce [2020-10-05 23:00:38,960 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 23:00:38,962 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 23:00:38,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 23:00:38,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 23:00:38,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 23:00:38,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:00:38" (1/1) ... [2020-10-05 23:00:38,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dd2440f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:00:38, skipping insertion in model container [2020-10-05 23:00:38,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:00:38" (1/1) ... [2020-10-05 23:00:38,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 23:00:39,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 23:00:39,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:00:39,461 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 23:00:39,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:00:39,643 INFO L208 MainTranslator]: Completed translation [2020-10-05 23:00:39,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:00:39 WrapperNode [2020-10-05 23:00:39,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 23:00:39,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 23:00:39,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 23:00:39,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 23:00:39,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:00:39" (1/1) ... [2020-10-05 23:00:39,700 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:00:39" (1/1) ... [2020-10-05 23:00:39,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 23:00:39,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 23:00:39,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 23:00:39,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 23:00:39,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:00:39" (1/1) ... [2020-10-05 23:00:39,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:00:39" (1/1) ... [2020-10-05 23:00:39,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:00:39" (1/1) ... [2020-10-05 23:00:39,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:00:39" (1/1) ... [2020-10-05 23:00:39,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:00:39" (1/1) ... [2020-10-05 23:00:39,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:00:39" (1/1) ... [2020-10-05 23:00:39,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:00:39" (1/1) ... [2020-10-05 23:00:39,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 23:00:39,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 23:00:39,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 23:00:39,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 23:00:39,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:00:39" (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 [2020-10-05 23:00:39,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-05 23:00:39,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-05 23:00:39,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 23:00:39,819 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2020-10-05 23:00:39,820 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2020-10-05 23:00:39,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 23:00:39,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 23:00:39,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 23:00:39,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 23:00:39,822 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 23:00:40,200 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 23:00:40,201 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-05 23:00:40,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:00:40 BoogieIcfgContainer [2020-10-05 23:00:40,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 23:00:40,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 23:00:40,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 23:00:40,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 23:00:40,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 11:00:38" (1/3) ... [2020-10-05 23:00:40,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@401315ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:00:40, skipping insertion in model container [2020-10-05 23:00:40,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:00:39" (2/3) ... [2020-10-05 23:00:40,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@401315ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:00:40, skipping insertion in model container [2020-10-05 23:00:40,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:00:40" (3/3) ... [2020-10-05 23:00:40,212 INFO L109 eAbstractionObserver]: Analyzing ICFG nondet-array-1.i [2020-10-05 23:00:40,223 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 23:00:40,223 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-05 23:00:40,231 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 23:00:40,232 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 23:00:40,255 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:40,255 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:40,256 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:40,256 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:40,257 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:40,257 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:40,257 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:40,261 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:40,262 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:40,262 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:40,262 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:40,263 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:40,284 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-05 23:00:40,305 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:00:40,306 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:00:40,306 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-05 23:00:40,306 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:00:40,306 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:00:40,306 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:00:40,306 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:00:40,307 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:00:40,320 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 71 transitions, 150 flow [2020-10-05 23:00:40,322 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 67 places, 71 transitions, 150 flow [2020-10-05 23:00:40,376 INFO L129 PetriNetUnfolder]: 12/103 cut-off events. [2020-10-05 23:00:40,376 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-05 23:00:40,381 INFO L80 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 103 events. 12/103 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 206 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2020-10-05 23:00:40,383 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 67 places, 71 transitions, 150 flow [2020-10-05 23:00:40,412 INFO L129 PetriNetUnfolder]: 12/103 cut-off events. [2020-10-05 23:00:40,412 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-05 23:00:40,413 INFO L80 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 103 events. 12/103 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 206 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2020-10-05 23:00:40,415 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 370 [2020-10-05 23:00:40,416 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-10-05 23:00:41,747 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-05 23:00:42,000 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-05 23:00:42,167 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-10-05 23:00:42,238 INFO L206 etLargeBlockEncoding]: Checked pairs total: 264 [2020-10-05 23:00:42,238 INFO L214 etLargeBlockEncoding]: Total number of compositions: 66 [2020-10-05 23:00:42,242 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 14 transitions, 36 flow [2020-10-05 23:00:42,251 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 27 states. [2020-10-05 23:00:42,253 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-05 23:00:42,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-05 23:00:42,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:00:42,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-05 23:00:42,260 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:00:42,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:00:42,264 INFO L82 PathProgramCache]: Analyzing trace with hash 8680406, now seen corresponding path program 1 times [2020-10-05 23:00:42,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:00:42,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941541652] [2020-10-05 23:00:42,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:00:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:00:42,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:00:42,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941541652] [2020-10-05 23:00:42,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:00:42,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:00:42,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843341519] [2020-10-05 23:00:42,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:00:42,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:00:42,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:00:42,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:00:42,467 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2020-10-05 23:00:42,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:00:42,510 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-10-05 23:00:42,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:00:42,512 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-05 23:00:42,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:00:42,523 INFO L225 Difference]: With dead ends: 27 [2020-10-05 23:00:42,523 INFO L226 Difference]: Without dead ends: 23 [2020-10-05 23:00:42,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:00:42,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-05 23:00:42,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-05 23:00:42,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-05 23:00:42,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 32 transitions. [2020-10-05 23:00:42,561 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 32 transitions. Word has length 4 [2020-10-05 23:00:42,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:00:42,561 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 32 transitions. [2020-10-05 23:00:42,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:00:42,562 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2020-10-05 23:00:42,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-05 23:00:42,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:00:42,562 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-10-05 23:00:42,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 23:00:42,563 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:00:42,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:00:42,563 INFO L82 PathProgramCache]: Analyzing trace with hash -256835414, now seen corresponding path program 1 times [2020-10-05 23:00:42,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:00:42,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002547713] [2020-10-05 23:00:42,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:00:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:00:42,597 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:00:42,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:00:42,615 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:00:42,644 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-05 23:00:42,645 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-05 23:00:42,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 23:00:42,647 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-05 23:00:42,648 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-05 23:00:42,648 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-05 23:00:42,654 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:42,654 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:42,654 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:42,654 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:42,655 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:42,655 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:42,655 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:42,655 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:42,656 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:42,656 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:42,656 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:42,656 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:42,656 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:42,657 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:42,657 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:42,657 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:42,658 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:42,658 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:42,658 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:42,659 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:42,660 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:42,660 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:42,660 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:42,660 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:42,663 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-05 23:00:42,663 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:00:42,663 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:00:42,663 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-05 23:00:42,663 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:00:42,664 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:00:42,664 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:00:42,664 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:00:42,664 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:00:42,666 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 78 transitions, 174 flow [2020-10-05 23:00:42,667 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 78 transitions, 174 flow [2020-10-05 23:00:42,720 INFO L129 PetriNetUnfolder]: 23/183 cut-off events. [2020-10-05 23:00:42,721 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-05 23:00:42,728 INFO L80 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 183 events. 23/183 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 456 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 105. Up to 8 conditions per place. [2020-10-05 23:00:42,733 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 78 transitions, 174 flow [2020-10-05 23:00:42,784 INFO L129 PetriNetUnfolder]: 23/183 cut-off events. [2020-10-05 23:00:42,784 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-05 23:00:42,785 INFO L80 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 183 events. 23/183 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 456 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 105. Up to 8 conditions per place. [2020-10-05 23:00:42,787 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 900 [2020-10-05 23:00:42,788 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-10-05 23:00:43,937 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-05 23:00:44,235 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-05 23:00:44,473 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2020-10-05 23:00:44,547 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1723 [2020-10-05 23:00:44,548 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-10-05 23:00:44,548 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 23 transitions, 64 flow [2020-10-05 23:00:44,559 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 242 states. [2020-10-05 23:00:44,560 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-10-05 23:00:44,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-05 23:00:44,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:00:44,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-05 23:00:44,561 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:00:44,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:00:44,561 INFO L82 PathProgramCache]: Analyzing trace with hash 13452069, now seen corresponding path program 1 times [2020-10-05 23:00:44,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:00:44,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174484415] [2020-10-05 23:00:44,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:00:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:00:44,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:00:44,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174484415] [2020-10-05 23:00:44,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:00:44,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:00:44,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405217860] [2020-10-05 23:00:44,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:00:44,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:00:44,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:00:44,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:00:44,623 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 3 states. [2020-10-05 23:00:44,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:00:44,664 INFO L93 Difference]: Finished difference Result 242 states and 550 transitions. [2020-10-05 23:00:44,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:00:44,664 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-05 23:00:44,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:00:44,671 INFO L225 Difference]: With dead ends: 242 [2020-10-05 23:00:44,671 INFO L226 Difference]: Without dead ends: 216 [2020-10-05 23:00:44,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:00:44,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-05 23:00:44,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-10-05 23:00:44,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-05 23:00:44,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 494 transitions. [2020-10-05 23:00:44,700 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 494 transitions. Word has length 4 [2020-10-05 23:00:44,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:00:44,700 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 494 transitions. [2020-10-05 23:00:44,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:00:44,701 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 494 transitions. [2020-10-05 23:00:44,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 23:00:44,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:00:44,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:00:44,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 23:00:44,702 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:00:44,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:00:44,703 INFO L82 PathProgramCache]: Analyzing trace with hash 76722491, now seen corresponding path program 1 times [2020-10-05 23:00:44,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:00:44,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354253536] [2020-10-05 23:00:44,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:00:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:00:44,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-05 23:00:44,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354253536] [2020-10-05 23:00:44,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:00:44,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:00:44,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724747289] [2020-10-05 23:00:44,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:00:44,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:00:44,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:00:44,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:00:44,757 INFO L87 Difference]: Start difference. First operand 216 states and 494 transitions. Second operand 4 states. [2020-10-05 23:00:44,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:00:44,825 INFO L93 Difference]: Finished difference Result 203 states and 426 transitions. [2020-10-05 23:00:44,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:00:44,826 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-05 23:00:44,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:00:44,830 INFO L225 Difference]: With dead ends: 203 [2020-10-05 23:00:44,830 INFO L226 Difference]: Without dead ends: 203 [2020-10-05 23:00:44,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:00:44,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-05 23:00:44,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197. [2020-10-05 23:00:44,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-05 23:00:44,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 420 transitions. [2020-10-05 23:00:44,848 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 420 transitions. Word has length 8 [2020-10-05 23:00:44,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:00:44,849 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 420 transitions. [2020-10-05 23:00:44,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:00:44,862 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 420 transitions. [2020-10-05 23:00:44,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:00:44,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:00:44,863 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2020-10-05 23:00:44,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 23:00:44,864 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:00:44,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:00:44,865 INFO L82 PathProgramCache]: Analyzing trace with hash 94633273, now seen corresponding path program 1 times [2020-10-05 23:00:44,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:00:44,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677061419] [2020-10-05 23:00:44,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:00:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:00:44,887 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:00:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:00:44,901 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:00:44,909 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-05 23:00:44,909 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-05 23:00:44,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-05 23:00:44,910 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-05 23:00:44,910 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-05 23:00:44,911 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-05 23:00:44,917 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,918 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,918 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,918 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,918 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,918 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,919 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,919 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,919 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,919 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,919 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,920 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,920 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,920 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,920 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,920 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,920 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,921 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,921 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,921 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,921 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,921 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,922 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,922 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,922 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,922 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,924 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,924 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,924 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,924 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,924 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,926 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,926 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,926 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,926 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,926 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:44,930 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-05 23:00:44,930 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:00:44,930 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:00:44,930 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-05 23:00:44,930 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:00:44,931 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:00:44,931 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:00:44,931 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:00:44,931 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:00:44,933 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 85 transitions, 200 flow [2020-10-05 23:00:44,933 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 85 transitions, 200 flow [2020-10-05 23:00:44,967 INFO L129 PetriNetUnfolder]: 45/330 cut-off events. [2020-10-05 23:00:44,968 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-10-05 23:00:44,969 INFO L80 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 330 events. 45/330 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1086 event pairs, 1 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 191. Up to 16 conditions per place. [2020-10-05 23:00:44,973 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 85 transitions, 200 flow [2020-10-05 23:00:45,002 INFO L129 PetriNetUnfolder]: 45/330 cut-off events. [2020-10-05 23:00:45,002 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-10-05 23:00:45,004 INFO L80 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 330 events. 45/330 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1086 event pairs, 1 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 191. Up to 16 conditions per place. [2020-10-05 23:00:45,008 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1470 [2020-10-05 23:00:45,008 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-10-05 23:00:46,329 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-05 23:00:46,419 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3028 [2020-10-05 23:00:46,419 INFO L214 etLargeBlockEncoding]: Total number of compositions: 68 [2020-10-05 23:00:46,419 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 28 transitions, 86 flow [2020-10-05 23:00:46,469 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1150 states. [2020-10-05 23:00:46,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states. [2020-10-05 23:00:46,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-05 23:00:46,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:00:46,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-05 23:00:46,471 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:00:46,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:00:46,471 INFO L82 PathProgramCache]: Analyzing trace with hash 18528206, now seen corresponding path program 1 times [2020-10-05 23:00:46,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:00:46,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280902883] [2020-10-05 23:00:46,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:00:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:00:46,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:00:46,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280902883] [2020-10-05 23:00:46,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:00:46,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:00:46,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399828491] [2020-10-05 23:00:46,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:00:46,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:00:46,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:00:46,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:00:46,529 INFO L87 Difference]: Start difference. First operand 1150 states. Second operand 3 states. [2020-10-05 23:00:46,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:00:46,569 INFO L93 Difference]: Finished difference Result 1150 states and 3360 transitions. [2020-10-05 23:00:46,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:00:46,570 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-05 23:00:46,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:00:46,580 INFO L225 Difference]: With dead ends: 1150 [2020-10-05 23:00:46,580 INFO L226 Difference]: Without dead ends: 1024 [2020-10-05 23:00:46,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:00:46,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-10-05 23:00:46,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1024. [2020-10-05 23:00:46,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-10-05 23:00:46,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 3009 transitions. [2020-10-05 23:00:46,642 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 3009 transitions. Word has length 4 [2020-10-05 23:00:46,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:00:46,642 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 3009 transitions. [2020-10-05 23:00:46,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:00:46,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 3009 transitions. [2020-10-05 23:00:46,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 23:00:46,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:00:46,643 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:00:46,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-05 23:00:46,644 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:00:46,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:00:46,644 INFO L82 PathProgramCache]: Analyzing trace with hash 949696130, now seen corresponding path program 1 times [2020-10-05 23:00:46,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:00:46,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551526723] [2020-10-05 23:00:46,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:00:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:00:46,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-05 23:00:46,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551526723] [2020-10-05 23:00:46,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:00:46,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:00:46,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353114464] [2020-10-05 23:00:46,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:00:46,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:00:46,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:00:46,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:00:46,683 INFO L87 Difference]: Start difference. First operand 1024 states and 3009 transitions. Second operand 4 states. [2020-10-05 23:00:46,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:00:46,720 INFO L93 Difference]: Finished difference Result 1015 states and 2784 transitions. [2020-10-05 23:00:46,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:00:46,721 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-05 23:00:46,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:00:46,728 INFO L225 Difference]: With dead ends: 1015 [2020-10-05 23:00:46,728 INFO L226 Difference]: Without dead ends: 1015 [2020-10-05 23:00:46,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:00:46,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-10-05 23:00:46,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 977. [2020-10-05 23:00:46,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 977 states. [2020-10-05 23:00:46,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 2718 transitions. [2020-10-05 23:00:46,765 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 2718 transitions. Word has length 8 [2020-10-05 23:00:46,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:00:46,765 INFO L479 AbstractCegarLoop]: Abstraction has 977 states and 2718 transitions. [2020-10-05 23:00:46,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:00:46,766 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 2718 transitions. [2020-10-05 23:00:46,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-05 23:00:46,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:00:46,769 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2020-10-05 23:00:46,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-05 23:00:46,769 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:00:46,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:00:46,770 INFO L82 PathProgramCache]: Analyzing trace with hash -515475845, now seen corresponding path program 1 times [2020-10-05 23:00:46,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:00:46,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671120345] [2020-10-05 23:00:46,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:00:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:00:46,788 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:00:46,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:00:46,800 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:00:46,808 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-05 23:00:46,808 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-05 23:00:46,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-05 23:00:46,809 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-05 23:00:46,809 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-05 23:00:46,810 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-05 23:00:46,818 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,818 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,818 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,818 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,819 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,819 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,819 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,819 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,819 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,819 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,820 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,820 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,820 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,820 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,820 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,820 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,821 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,821 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,821 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,821 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,821 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,821 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,822 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,822 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,822 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,822 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,822 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,822 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,823 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,823 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,823 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,823 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,824 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,838 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,838 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,838 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,838 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,838 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,840 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,840 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,840 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,840 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,841 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,841 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,842 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,842 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,842 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,842 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:46,847 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-05 23:00:46,848 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:00:46,848 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:00:46,848 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-05 23:00:46,848 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:00:46,848 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:00:46,848 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:00:46,849 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:00:46,849 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:00:46,850 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 92 transitions, 228 flow [2020-10-05 23:00:46,850 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 92 transitions, 228 flow [2020-10-05 23:00:46,911 INFO L129 PetriNetUnfolder]: 91/613 cut-off events. [2020-10-05 23:00:46,911 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2020-10-05 23:00:46,913 INFO L80 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 613 events. 91/613 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2732 event pairs, 6 based on Foata normal form. 0/506 useless extension candidates. Maximal degree in co-relation 350. Up to 32 conditions per place. [2020-10-05 23:00:46,924 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 92 transitions, 228 flow [2020-10-05 23:00:46,995 INFO L129 PetriNetUnfolder]: 91/613 cut-off events. [2020-10-05 23:00:46,996 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2020-10-05 23:00:46,998 INFO L80 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 613 events. 91/613 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2732 event pairs, 6 based on Foata normal form. 0/506 useless extension candidates. Maximal degree in co-relation 350. Up to 32 conditions per place. [2020-10-05 23:00:47,013 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2120 [2020-10-05 23:00:47,013 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-10-05 23:00:48,419 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-05 23:00:48,515 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4448 [2020-10-05 23:00:48,516 INFO L214 etLargeBlockEncoding]: Total number of compositions: 68 [2020-10-05 23:00:48,516 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 33 transitions, 110 flow [2020-10-05 23:00:48,876 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5482 states. [2020-10-05 23:00:48,876 INFO L276 IsEmpty]: Start isEmpty. Operand 5482 states. [2020-10-05 23:00:48,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-05 23:00:48,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:00:48,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-05 23:00:48,877 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:00:48,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:00:48,878 INFO L82 PathProgramCache]: Analyzing trace with hash 23824947, now seen corresponding path program 1 times [2020-10-05 23:00:48,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:00:48,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564674376] [2020-10-05 23:00:48,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:00:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:00:48,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:00:48,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564674376] [2020-10-05 23:00:48,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:00:48,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:00:48,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217202950] [2020-10-05 23:00:48,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:00:48,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:00:48,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:00:48,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:00:48,937 INFO L87 Difference]: Start difference. First operand 5482 states. Second operand 3 states. [2020-10-05 23:00:49,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:00:49,027 INFO L93 Difference]: Finished difference Result 5482 states and 19554 transitions. [2020-10-05 23:00:49,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:00:49,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-05 23:00:49,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:00:49,071 INFO L225 Difference]: With dead ends: 5482 [2020-10-05 23:00:49,071 INFO L226 Difference]: Without dead ends: 4856 [2020-10-05 23:00:49,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:00:49,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2020-10-05 23:00:49,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2020-10-05 23:00:49,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2020-10-05 23:00:49,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 17428 transitions. [2020-10-05 23:00:49,304 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 17428 transitions. Word has length 4 [2020-10-05 23:00:49,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:00:49,305 INFO L479 AbstractCegarLoop]: Abstraction has 4856 states and 17428 transitions. [2020-10-05 23:00:49,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:00:49,305 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 17428 transitions. [2020-10-05 23:00:49,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 23:00:49,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:00:49,307 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:00:49,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-05 23:00:49,307 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:00:49,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:00:49,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1205655351, now seen corresponding path program 1 times [2020-10-05 23:00:49,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:00:49,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269814141] [2020-10-05 23:00:49,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:00:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:00:49,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-05 23:00:49,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269814141] [2020-10-05 23:00:49,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:00:49,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:00:49,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292353466] [2020-10-05 23:00:49,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:00:49,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:00:49,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:00:49,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:00:49,374 INFO L87 Difference]: Start difference. First operand 4856 states and 17428 transitions. Second operand 4 states. [2020-10-05 23:00:49,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:00:49,451 INFO L93 Difference]: Finished difference Result 4995 states and 16978 transitions. [2020-10-05 23:00:49,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:00:49,452 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-05 23:00:49,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:00:49,493 INFO L225 Difference]: With dead ends: 4995 [2020-10-05 23:00:49,494 INFO L226 Difference]: Without dead ends: 4995 [2020-10-05 23:00:49,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:00:49,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4995 states. [2020-10-05 23:00:49,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4995 to 4797. [2020-10-05 23:00:49,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4797 states. [2020-10-05 23:00:49,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4797 states to 4797 states and 16480 transitions. [2020-10-05 23:00:49,705 INFO L78 Accepts]: Start accepts. Automaton has 4797 states and 16480 transitions. Word has length 8 [2020-10-05 23:00:49,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:00:49,706 INFO L479 AbstractCegarLoop]: Abstraction has 4797 states and 16480 transitions. [2020-10-05 23:00:49,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:00:49,706 INFO L276 IsEmpty]: Start isEmpty. Operand 4797 states and 16480 transitions. [2020-10-05 23:00:49,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-05 23:00:49,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:00:49,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:00:49,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-05 23:00:49,711 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:00:49,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:00:49,711 INFO L82 PathProgramCache]: Analyzing trace with hash 172994846, now seen corresponding path program 1 times [2020-10-05 23:00:49,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:00:49,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469398557] [2020-10-05 23:00:49,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:00:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:00:49,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-05 23:00:49,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469398557] [2020-10-05 23:00:49,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273873799] [2020-10-05 23:00:49,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:00:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:00:49,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-05 23:00:49,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:00:49,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-05 23:00:49,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:00:49,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-10-05 23:00:49,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721127800] [2020-10-05 23:00:49,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 23:00:49,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:00:49,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 23:00:49,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:00:49,955 INFO L87 Difference]: Start difference. First operand 4797 states and 16480 transitions. Second operand 6 states. [2020-10-05 23:00:50,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:00:50,015 INFO L93 Difference]: Finished difference Result 4793 states and 16469 transitions. [2020-10-05 23:00:50,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:00:50,015 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-05 23:00:50,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:00:50,062 INFO L225 Difference]: With dead ends: 4793 [2020-10-05 23:00:50,062 INFO L226 Difference]: Without dead ends: 4793 [2020-10-05 23:00:50,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:00:50,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4793 states. [2020-10-05 23:00:50,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4793 to 4793. [2020-10-05 23:00:50,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4793 states. [2020-10-05 23:00:50,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4793 states to 4793 states and 16469 transitions. [2020-10-05 23:00:50,227 INFO L78 Accepts]: Start accepts. Automaton has 4793 states and 16469 transitions. Word has length 16 [2020-10-05 23:00:50,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:00:50,227 INFO L479 AbstractCegarLoop]: Abstraction has 4793 states and 16469 transitions. [2020-10-05 23:00:50,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 23:00:50,228 INFO L276 IsEmpty]: Start isEmpty. Operand 4793 states and 16469 transitions. [2020-10-05 23:00:50,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-05 23:00:50,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:00:50,230 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2020-10-05 23:00:50,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-05 23:00:50,444 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:00:50,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:00:50,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1534304145, now seen corresponding path program 1 times [2020-10-05 23:00:50,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:00:50,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541937040] [2020-10-05 23:00:50,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:00:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:00:50,456 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:00:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:00:50,470 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:00:50,477 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-05 23:00:50,478 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-05 23:00:50,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-05 23:00:50,478 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-05 23:00:50,479 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-05 23:00:50,479 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-05 23:00:50,487 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,487 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,487 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,488 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,488 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,488 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,488 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,488 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,489 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,489 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,489 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,489 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,489 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,489 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,490 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,490 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,490 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,490 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,490 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,490 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,491 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,491 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,491 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,491 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,491 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,491 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,492 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,492 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,492 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,492 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,492 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,492 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,493 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,493 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,493 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,493 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,493 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,494 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,494 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,494 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,495 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,495 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,495 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,495 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,496 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,497 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,497 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,497 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,497 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,497 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,498 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,498 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,499 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,499 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,499 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,500 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,500 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,500 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,500 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,501 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:00:50,505 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-05 23:00:50,505 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:00:50,505 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:00:50,505 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-05 23:00:50,506 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:00:50,506 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:00:50,506 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:00:50,506 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:00:50,506 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:00:50,507 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 99 transitions, 258 flow [2020-10-05 23:00:50,507 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 99 transitions, 258 flow [2020-10-05 23:00:50,653 INFO L129 PetriNetUnfolder]: 189/1172 cut-off events. [2020-10-05 23:00:50,654 INFO L130 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2020-10-05 23:00:50,658 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1283 conditions, 1172 events. 189/1172 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6706 event pairs, 23 based on Foata normal form. 0/967 useless extension candidates. Maximal degree in co-relation 658. Up to 80 conditions per place. [2020-10-05 23:00:50,682 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 99 transitions, 258 flow [2020-10-05 23:00:50,809 INFO L129 PetriNetUnfolder]: 189/1172 cut-off events. [2020-10-05 23:00:50,810 INFO L130 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2020-10-05 23:00:50,814 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1283 conditions, 1172 events. 189/1172 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6706 event pairs, 23 based on Foata normal form. 0/967 useless extension candidates. Maximal degree in co-relation 658. Up to 80 conditions per place. [2020-10-05 23:00:50,883 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2850 [2020-10-05 23:00:50,883 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-10-05 23:00:52,179 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-05 23:00:52,620 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-10-05 23:00:52,694 INFO L206 etLargeBlockEncoding]: Checked pairs total: 5971 [2020-10-05 23:00:52,694 INFO L214 etLargeBlockEncoding]: Total number of compositions: 70 [2020-10-05 23:00:52,694 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 38 transitions, 136 flow [2020-10-05 23:00:55,418 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26310 states. [2020-10-05 23:00:55,418 INFO L276 IsEmpty]: Start isEmpty. Operand 26310 states. [2020-10-05 23:00:55,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-05 23:00:55,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:00:55,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-05 23:00:55,419 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:00:55,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:00:55,419 INFO L82 PathProgramCache]: Analyzing trace with hash 29336307, now seen corresponding path program 1 times [2020-10-05 23:00:55,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:00:55,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895402755] [2020-10-05 23:00:55,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:00:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:00:55,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:00:55,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895402755] [2020-10-05 23:00:55,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:00:55,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:00:55,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50469779] [2020-10-05 23:00:55,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:00:55,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:00:55,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:00:55,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:00:55,447 INFO L87 Difference]: Start difference. First operand 26310 states. Second operand 3 states. [2020-10-05 23:00:55,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:00:55,624 INFO L93 Difference]: Finished difference Result 26310 states and 110676 transitions. [2020-10-05 23:00:55,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:00:55,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-05 23:00:55,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:00:55,747 INFO L225 Difference]: With dead ends: 26310 [2020-10-05 23:00:55,747 INFO L226 Difference]: Without dead ends: 23184 [2020-10-05 23:00:55,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:00:56,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23184 states. [2020-10-05 23:00:56,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23184 to 23184. [2020-10-05 23:00:56,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23184 states. [2020-10-05 23:00:56,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23184 states to 23184 states and 98175 transitions. [2020-10-05 23:00:56,874 INFO L78 Accepts]: Start accepts. Automaton has 23184 states and 98175 transitions. Word has length 4 [2020-10-05 23:00:56,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:00:56,874 INFO L479 AbstractCegarLoop]: Abstraction has 23184 states and 98175 transitions. [2020-10-05 23:00:56,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:00:56,875 INFO L276 IsEmpty]: Start isEmpty. Operand 23184 states and 98175 transitions. [2020-10-05 23:00:56,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 23:00:56,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:00:56,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:00:56,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-05 23:00:56,876 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:00:56,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:00:56,876 INFO L82 PathProgramCache]: Analyzing trace with hash 805936127, now seen corresponding path program 1 times [2020-10-05 23:00:56,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:00:56,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691498664] [2020-10-05 23:00:56,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:00:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:00:56,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-05 23:00:56,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691498664] [2020-10-05 23:00:56,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:00:56,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:00:56,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762784904] [2020-10-05 23:00:56,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:00:56,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:00:56,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:00:56,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:00:56,911 INFO L87 Difference]: Start difference. First operand 23184 states and 98175 transitions. Second operand 4 states. [2020-10-05 23:00:57,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:00:57,108 INFO L93 Difference]: Finished difference Result 24543 states and 99524 transitions. [2020-10-05 23:00:57,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:00:57,109 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-05 23:00:57,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:00:58,452 INFO L225 Difference]: With dead ends: 24543 [2020-10-05 23:00:58,452 INFO L226 Difference]: Without dead ends: 24543 [2020-10-05 23:00:58,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:00:58,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24543 states. [2020-10-05 23:00:59,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24543 to 23577. [2020-10-05 23:00:59,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23577 states. [2020-10-05 23:00:59,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23577 states to 23577 states and 96338 transitions. [2020-10-05 23:00:59,681 INFO L78 Accepts]: Start accepts. Automaton has 23577 states and 96338 transitions. Word has length 8 [2020-10-05 23:00:59,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:00:59,681 INFO L479 AbstractCegarLoop]: Abstraction has 23577 states and 96338 transitions. [2020-10-05 23:00:59,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:00:59,681 INFO L276 IsEmpty]: Start isEmpty. Operand 23577 states and 96338 transitions. [2020-10-05 23:00:59,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-05 23:00:59,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:00:59,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:00:59,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-05 23:00:59,683 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:00:59,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:00:59,683 INFO L82 PathProgramCache]: Analyzing trace with hash -447719219, now seen corresponding path program 1 times [2020-10-05 23:00:59,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:00:59,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889621146] [2020-10-05 23:00:59,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:00:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:00:59,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-05 23:00:59,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889621146] [2020-10-05 23:00:59,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354923404] [2020-10-05 23:00:59,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:00:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:00:59,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-05 23:00:59,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:00:59,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-05 23:00:59,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:00:59,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-10-05 23:00:59,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029356598] [2020-10-05 23:00:59,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 23:00:59,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:00:59,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 23:00:59,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:00:59,818 INFO L87 Difference]: Start difference. First operand 23577 states and 96338 transitions. Second operand 6 states. [2020-10-05 23:00:59,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:00:59,979 INFO L93 Difference]: Finished difference Result 23573 states and 96327 transitions. [2020-10-05 23:00:59,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:00:59,979 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-05 23:00:59,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:01:00,063 INFO L225 Difference]: With dead ends: 23573 [2020-10-05 23:01:00,063 INFO L226 Difference]: Without dead ends: 23573 [2020-10-05 23:01:00,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:01:00,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23573 states. [2020-10-05 23:01:01,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23573 to 23573. [2020-10-05 23:01:01,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23573 states. [2020-10-05 23:01:01,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23573 states to 23573 states and 96327 transitions. [2020-10-05 23:01:01,189 INFO L78 Accepts]: Start accepts. Automaton has 23573 states and 96327 transitions. Word has length 16 [2020-10-05 23:01:01,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:01:01,189 INFO L479 AbstractCegarLoop]: Abstraction has 23573 states and 96327 transitions. [2020-10-05 23:01:01,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 23:01:01,189 INFO L276 IsEmpty]: Start isEmpty. Operand 23573 states and 96327 transitions. [2020-10-05 23:01:01,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-05 23:01:01,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:01:01,194 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:01:01,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-05 23:01:01,408 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:01:01,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:01:01,409 INFO L82 PathProgramCache]: Analyzing trace with hash 81754288, now seen corresponding path program 1 times [2020-10-05 23:01:01,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:01:01,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863941896] [2020-10-05 23:01:01,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:01:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:01:01,466 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-05 23:01:01,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863941896] [2020-10-05 23:01:01,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942944618] [2020-10-05 23:01:01,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:01:01,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:01:01,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-05 23:01:01,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:01:01,590 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-05 23:01:01,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:01:01,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-05 23:01:01,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134686199] [2020-10-05 23:01:01,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-05 23:01:01,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:01:01,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-05 23:01:01,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-10-05 23:01:01,594 INFO L87 Difference]: Start difference. First operand 23573 states and 96327 transitions. Second operand 8 states. [2020-10-05 23:01:01,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:01:01,811 INFO L93 Difference]: Finished difference Result 23557 states and 96271 transitions. [2020-10-05 23:01:01,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:01:01,811 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-10-05 23:01:01,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:01:01,907 INFO L225 Difference]: With dead ends: 23557 [2020-10-05 23:01:01,908 INFO L226 Difference]: Without dead ends: 23557 [2020-10-05 23:01:01,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-10-05 23:01:02,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23557 states. [2020-10-05 23:01:03,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23557 to 23557. [2020-10-05 23:01:03,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23557 states. [2020-10-05 23:01:03,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23557 states to 23557 states and 96271 transitions. [2020-10-05 23:01:03,870 INFO L78 Accepts]: Start accepts. Automaton has 23557 states and 96271 transitions. Word has length 20 [2020-10-05 23:01:03,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:01:03,870 INFO L479 AbstractCegarLoop]: Abstraction has 23557 states and 96271 transitions. [2020-10-05 23:01:03,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-05 23:01:03,870 INFO L276 IsEmpty]: Start isEmpty. Operand 23557 states and 96271 transitions. [2020-10-05 23:01:03,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-05 23:01:03,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:01:03,878 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:01:04,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-05 23:01:04,092 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:01:04,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:01:04,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1012463302, now seen corresponding path program 1 times [2020-10-05 23:01:04,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:01:04,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704522432] [2020-10-05 23:01:04,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:01:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:01:04,109 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:01:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:01:04,120 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:01:04,128 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-05 23:01:04,128 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-05 23:01:04,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-05 23:01:04,128 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-05 23:01:04,129 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-05 23:01:04,129 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-05 23:01:04,138 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,139 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,139 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,139 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,139 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,139 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,139 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,140 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,140 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,140 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,140 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,140 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,140 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,140 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,141 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,141 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,141 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,141 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,141 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,141 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,141 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,142 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,142 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,142 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,142 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,142 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,142 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,143 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,143 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,143 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,143 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,143 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,143 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,143 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,144 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,144 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,144 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,144 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,144 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,144 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,144 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,145 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,145 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,145 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,145 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,145 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,146 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,147 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,147 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,147 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,147 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,147 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,148 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,148 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,149 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,149 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,149 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,150 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,150 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,150 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,150 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,151 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,152 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,152 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,152 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,152 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,152 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,153 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,154 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,154 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,154 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,154 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:01:04,158 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-05 23:01:04,159 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:01:04,159 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:01:04,159 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-05 23:01:04,159 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:01:04,159 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:01:04,160 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:01:04,160 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:01:04,160 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:01:04,161 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 106 transitions, 290 flow [2020-10-05 23:01:04,161 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 107 places, 106 transitions, 290 flow [2020-10-05 23:01:04,407 INFO L129 PetriNetUnfolder]: 399/2291 cut-off events. [2020-10-05 23:01:04,408 INFO L130 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2020-10-05 23:01:04,418 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2523 conditions, 2291 events. 399/2291 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 16164 event pairs, 72 based on Foata normal form. 0/1892 useless extension candidates. Maximal degree in co-relation 1271. Up to 192 conditions per place. [2020-10-05 23:01:04,669 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 107 places, 106 transitions, 290 flow [2020-10-05 23:01:04,919 INFO L129 PetriNetUnfolder]: 399/2291 cut-off events. [2020-10-05 23:01:04,919 INFO L130 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2020-10-05 23:01:04,930 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2523 conditions, 2291 events. 399/2291 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 16164 event pairs, 72 based on Foata normal form. 0/1892 useless extension candidates. Maximal degree in co-relation 1271. Up to 192 conditions per place. [2020-10-05 23:01:04,971 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3660 [2020-10-05 23:01:04,971 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-10-05 23:01:06,501 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-05 23:01:06,591 INFO L206 etLargeBlockEncoding]: Checked pairs total: 8653 [2020-10-05 23:01:06,591 INFO L214 etLargeBlockEncoding]: Total number of compositions: 71 [2020-10-05 23:01:06,592 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 43 transitions, 164 flow [2020-10-05 23:01:40,653 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 127122 states. [2020-10-05 23:01:40,653 INFO L276 IsEmpty]: Start isEmpty. Operand 127122 states. [2020-10-05 23:01:40,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-05 23:01:40,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:01:40,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-05 23:01:40,654 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:01:40,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:01:40,655 INFO L82 PathProgramCache]: Analyzing trace with hash 35155697, now seen corresponding path program 1 times [2020-10-05 23:01:40,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:01:40,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989750297] [2020-10-05 23:01:40,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:01:40,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:01:40,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:01:40,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989750297] [2020-10-05 23:01:40,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:01:40,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:01:40,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101177934] [2020-10-05 23:01:40,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:01:40,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:01:40,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:01:40,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:01:40,676 INFO L87 Difference]: Start difference. First operand 127122 states. Second operand 3 states. [2020-10-05 23:01:44,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:01:44,598 INFO L93 Difference]: Finished difference Result 127122 states and 615398 transitions. [2020-10-05 23:01:44,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:01:44,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-05 23:01:44,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:01:45,053 INFO L225 Difference]: With dead ends: 127122 [2020-10-05 23:01:45,053 INFO L226 Difference]: Without dead ends: 111496 [2020-10-05 23:01:45,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:01:48,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111496 states. [2020-10-05 23:01:50,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111496 to 111496. [2020-10-05 23:01:50,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111496 states. [2020-10-05 23:01:51,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111496 states to 111496 states and 543522 transitions. [2020-10-05 23:01:51,312 INFO L78 Accepts]: Start accepts. Automaton has 111496 states and 543522 transitions. Word has length 4 [2020-10-05 23:01:51,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:01:51,312 INFO L479 AbstractCegarLoop]: Abstraction has 111496 states and 543522 transitions. [2020-10-05 23:01:51,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:01:51,312 INFO L276 IsEmpty]: Start isEmpty. Operand 111496 states and 543522 transitions. [2020-10-05 23:01:51,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 23:01:51,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:01:51,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:01:51,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-05 23:01:51,313 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:01:51,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:01:51,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1170285684, now seen corresponding path program 1 times [2020-10-05 23:01:51,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:01:51,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837204685] [2020-10-05 23:01:51,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:01:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:01:51,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-05 23:01:51,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837204685] [2020-10-05 23:01:51,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:01:51,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:01:51,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633563163] [2020-10-05 23:01:51,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:01:51,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:01:51,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:01:51,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:01:51,337 INFO L87 Difference]: Start difference. First operand 111496 states and 543522 transitions. Second operand 4 states. [2020-10-05 23:01:58,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:01:58,166 INFO L93 Difference]: Finished difference Result 120747 states and 568406 transitions. [2020-10-05 23:01:58,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:01:58,166 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-05 23:01:58,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:01:58,658 INFO L225 Difference]: With dead ends: 120747 [2020-10-05 23:01:58,658 INFO L226 Difference]: Without dead ends: 120747 [2020-10-05 23:01:58,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:02:01,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120747 states. [2020-10-05 23:02:04,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120747 to 116197. [2020-10-05 23:02:04,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116197 states. [2020-10-05 23:02:04,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116197 states to 116197 states and 549860 transitions. [2020-10-05 23:02:04,708 INFO L78 Accepts]: Start accepts. Automaton has 116197 states and 549860 transitions. Word has length 8 [2020-10-05 23:02:04,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:02:04,708 INFO L479 AbstractCegarLoop]: Abstraction has 116197 states and 549860 transitions. [2020-10-05 23:02:04,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:02:04,708 INFO L276 IsEmpty]: Start isEmpty. Operand 116197 states and 549860 transitions. [2020-10-05 23:02:04,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-05 23:02:04,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:02:04,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:02:04,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-05 23:02:04,709 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:02:04,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:02:04,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1082449829, now seen corresponding path program 1 times [2020-10-05 23:02:04,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:02:04,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355934307] [2020-10-05 23:02:04,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:02:04,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:02:04,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-05 23:02:04,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355934307] [2020-10-05 23:02:04,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503737989] [2020-10-05 23:02:04,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:02:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:02:04,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-05 23:02:04,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:02:04,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-05 23:02:04,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:02:04,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-10-05 23:02:04,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286184607] [2020-10-05 23:02:04,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 23:02:04,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:02:04,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 23:02:04,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:02:04,839 INFO L87 Difference]: Start difference. First operand 116197 states and 549860 transitions. Second operand 6 states. [2020-10-05 23:02:09,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:02:09,806 INFO L93 Difference]: Finished difference Result 116193 states and 549849 transitions. [2020-10-05 23:02:09,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:02:09,807 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-05 23:02:09,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:02:10,229 INFO L225 Difference]: With dead ends: 116193 [2020-10-05 23:02:10,229 INFO L226 Difference]: Without dead ends: 116193 [2020-10-05 23:02:10,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:02:13,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116193 states. [2020-10-05 23:02:19,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116193 to 116193. [2020-10-05 23:02:19,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116193 states. [2020-10-05 23:02:19,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116193 states to 116193 states and 549849 transitions. [2020-10-05 23:02:19,656 INFO L78 Accepts]: Start accepts. Automaton has 116193 states and 549849 transitions. Word has length 16 [2020-10-05 23:02:19,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:02:19,656 INFO L479 AbstractCegarLoop]: Abstraction has 116193 states and 549849 transitions. [2020-10-05 23:02:19,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 23:02:19,656 INFO L276 IsEmpty]: Start isEmpty. Operand 116193 states and 549849 transitions. [2020-10-05 23:02:19,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-05 23:02:19,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:02:19,659 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:02:19,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:02:19,865 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:02:19,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:02:19,865 INFO L82 PathProgramCache]: Analyzing trace with hash 173719339, now seen corresponding path program 1 times [2020-10-05 23:02:19,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:02:19,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104182258] [2020-10-05 23:02:19,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:02:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:02:19,907 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-05 23:02:19,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104182258] [2020-10-05 23:02:19,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116990277] [2020-10-05 23:02:19,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:02:19,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:02:19,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-05 23:02:19,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:02:20,021 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-05 23:02:20,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:02:20,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-05 23:02:20,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381622287] [2020-10-05 23:02:20,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-05 23:02:20,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:02:20,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-05 23:02:20,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-10-05 23:02:20,023 INFO L87 Difference]: Start difference. First operand 116193 states and 549849 transitions. Second operand 8 states. [2020-10-05 23:02:21,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:02:21,820 INFO L93 Difference]: Finished difference Result 116177 states and 549793 transitions. [2020-10-05 23:02:21,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:02:21,821 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-10-05 23:02:21,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:02:22,257 INFO L225 Difference]: With dead ends: 116177 [2020-10-05 23:02:22,257 INFO L226 Difference]: Without dead ends: 116177 [2020-10-05 23:02:22,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-10-05 23:02:24,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116177 states. [2020-10-05 23:02:32,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116177 to 116177. [2020-10-05 23:02:32,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116177 states. [2020-10-05 23:02:33,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116177 states to 116177 states and 549793 transitions. [2020-10-05 23:02:33,033 INFO L78 Accepts]: Start accepts. Automaton has 116177 states and 549793 transitions. Word has length 20 [2020-10-05 23:02:33,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:02:33,033 INFO L479 AbstractCegarLoop]: Abstraction has 116177 states and 549793 transitions. [2020-10-05 23:02:33,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-05 23:02:33,034 INFO L276 IsEmpty]: Start isEmpty. Operand 116177 states and 549793 transitions. [2020-10-05 23:02:33,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-05 23:02:33,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:02:33,041 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:02:33,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-05 23:02:33,255 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:02:33,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:02:33,255 INFO L82 PathProgramCache]: Analyzing trace with hash -999416206, now seen corresponding path program 1 times [2020-10-05 23:02:33,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:02:33,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750218253] [2020-10-05 23:02:33,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:02:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:02:33,317 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-05 23:02:33,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750218253] [2020-10-05 23:02:33,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313522826] [2020-10-05 23:02:33,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:02:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:02:33,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-05 23:02:33,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:02:33,450 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-05 23:02:33,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:02:33,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:02:33,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427188136] [2020-10-05 23:02:33,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-05 23:02:33,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:02:33,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-05 23:02:33,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2020-10-05 23:02:33,452 INFO L87 Difference]: Start difference. First operand 116177 states and 549793 transitions. Second operand 10 states. [2020-10-05 23:02:35,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:02:35,445 INFO L93 Difference]: Finished difference Result 116113 states and 549521 transitions. [2020-10-05 23:02:35,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 23:02:35,445 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-05 23:02:35,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:02:35,901 INFO L225 Difference]: With dead ends: 116113 [2020-10-05 23:02:35,901 INFO L226 Difference]: Without dead ends: 116113 [2020-10-05 23:02:35,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2020-10-05 23:02:38,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116113 states. [2020-10-05 23:02:46,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116113 to 116113. [2020-10-05 23:02:46,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116113 states. [2020-10-05 23:02:46,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116113 states to 116113 states and 549521 transitions. [2020-10-05 23:02:46,517 INFO L78 Accepts]: Start accepts. Automaton has 116113 states and 549521 transitions. Word has length 24 [2020-10-05 23:02:46,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:02:46,517 INFO L479 AbstractCegarLoop]: Abstraction has 116113 states and 549521 transitions. [2020-10-05 23:02:46,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-05 23:02:46,517 INFO L276 IsEmpty]: Start isEmpty. Operand 116113 states and 549521 transitions. [2020-10-05 23:02:46,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-05 23:02:46,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:02:46,531 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:02:46,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:02:46,732 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:02:46,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:02:46,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1963695170, now seen corresponding path program 1 times [2020-10-05 23:02:46,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:02:46,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284604274] [2020-10-05 23:02:46,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:02:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:02:46,745 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:02:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:02:46,753 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:02:46,761 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-05 23:02:46,761 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-05 23:02:46,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-05 23:02:46,762 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-05 23:02:46,762 WARN L363 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-05 23:02:46,763 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-10-05 23:02:46,772 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,772 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,772 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,773 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,773 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,773 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,773 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,773 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,774 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,774 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,774 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,774 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,774 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,774 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,775 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,775 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,775 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,775 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,775 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,775 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,775 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,776 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,776 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,776 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,776 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,776 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,776 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,777 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,777 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,777 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,777 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,777 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,777 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,777 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,778 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,778 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,778 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,778 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,778 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,778 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,779 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,779 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,779 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,779 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,779 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,779 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,779 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,780 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,780 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,780 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,780 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,780 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,781 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,781 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,782 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,782 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,783 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,783 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,783 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,784 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,784 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,784 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,784 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,785 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,786 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,786 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,786 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,786 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,786 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,787 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,788 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,788 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,788 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,788 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,789 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,789 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,789 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,789 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,790 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,791 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,791 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,791 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,791 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,791 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:02:46,797 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-05 23:02:46,797 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:02:46,797 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:02:46,797 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-05 23:02:46,797 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:02:46,798 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:02:46,798 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:02:46,798 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:02:46,798 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:02:46,799 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 113 transitions, 324 flow [2020-10-05 23:02:46,799 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 115 places, 113 transitions, 324 flow [2020-10-05 23:02:47,518 INFO L129 PetriNetUnfolder]: 849/4546 cut-off events. [2020-10-05 23:02:47,518 INFO L130 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2020-10-05 23:02:47,544 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5044 conditions, 4546 events. 849/4546 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 38350 event pairs, 201 based on Foata normal form. 0/3761 useless extension candidates. Maximal degree in co-relation 2509. Up to 448 conditions per place. [2020-10-05 23:02:48,613 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 115 places, 113 transitions, 324 flow [2020-10-05 23:02:49,108 INFO L129 PetriNetUnfolder]: 849/4546 cut-off events. [2020-10-05 23:02:49,108 INFO L130 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2020-10-05 23:02:49,135 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5044 conditions, 4546 events. 849/4546 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 38350 event pairs, 201 based on Foata normal form. 0/3761 useless extension candidates. Maximal degree in co-relation 2509. Up to 448 conditions per place. [2020-10-05 23:02:49,227 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4550 [2020-10-05 23:02:49,228 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-10-05 23:02:51,245 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-05 23:02:51,345 INFO L206 etLargeBlockEncoding]: Checked pairs total: 11131 [2020-10-05 23:02:51,345 INFO L214 etLargeBlockEncoding]: Total number of compositions: 75 [2020-10-05 23:02:51,347 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 48 transitions, 194 flow Received shutdown request... [2020-10-05 23:04:24,866 WARN L544 AbstractCegarLoop]: Verification canceled [2020-10-05 23:04:24,869 WARN L228 ceAbstractionStarter]: Timeout [2020-10-05 23:04:24,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 11:04:24 BasicIcfg [2020-10-05 23:04:24,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 23:04:24,876 INFO L168 Benchmark]: Toolchain (without parser) took 225909.70 ms. Allocated memory was 141.6 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 103.8 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2020-10-05 23:04:24,877 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-05 23:04:24,878 INFO L168 Benchmark]: CACSL2BoogieTranslator took 682.63 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 103.3 MB in the beginning and 164.1 MB in the end (delta: -60.8 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2020-10-05 23:04:24,878 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.41 ms. Allocated memory is still 204.5 MB. Free memory was 164.1 MB in the beginning and 162.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-05 23:04:24,880 INFO L168 Benchmark]: Boogie Preprocessor took 33.16 ms. Allocated memory is still 204.5 MB. Free memory was 162.2 MB in the beginning and 160.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-05 23:04:24,885 INFO L168 Benchmark]: RCFGBuilder took 443.75 ms. Allocated memory is still 204.5 MB. Free memory was 160.2 MB in the beginning and 137.7 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-10-05 23:04:24,886 INFO L168 Benchmark]: TraceAbstraction took 224665.43 ms. Allocated memory was 204.5 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 137.7 MB in the beginning and 1.9 GB in the end (delta: -1.7 GB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2020-10-05 23:04:24,892 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 682.63 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 103.3 MB in the beginning and 164.1 MB in the end (delta: -60.8 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 79.41 ms. Allocated memory is still 204.5 MB. Free memory was 164.1 MB in the beginning and 162.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.16 ms. Allocated memory is still 204.5 MB. Free memory was 162.2 MB in the beginning and 160.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 443.75 ms. Allocated memory is still 204.5 MB. Free memory was 160.2 MB in the beginning and 137.7 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 224665.43 ms. Allocated memory was 204.5 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 137.7 MB in the beginning and 1.9 GB in the end (delta: -1.7 GB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 67 ProgramPointsBefore, 15 ProgramPointsAfterwards, 71 TransitionsBefore, 14 TransitionsAfterwards, 370 CoEnabledTransitionPairs, 7 FixpointIterations, 24 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 181 VarBasedMoverChecksPositive, 3 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 3 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 264 CheckedPairsTotal, 66 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 75 ProgramPointsBefore, 25 ProgramPointsAfterwards, 78 TransitionsBefore, 23 TransitionsAfterwards, 900 CoEnabledTransitionPairs, 7 FixpointIterations, 23 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 461 VarBasedMoverChecksPositive, 14 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 21 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 1723 CheckedPairsTotal, 62 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 83 ProgramPointsBefore, 31 ProgramPointsAfterwards, 85 TransitionsBefore, 28 TransitionsAfterwards, 1470 CoEnabledTransitionPairs, 7 FixpointIterations, 25 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 749 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 32 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 3028 CheckedPairsTotal, 68 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 91 ProgramPointsBefore, 37 ProgramPointsAfterwards, 92 TransitionsBefore, 33 TransitionsAfterwards, 2120 CoEnabledTransitionPairs, 7 FixpointIterations, 25 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 12 ConcurrentYvCompositions, 5 ChoiceCompositions, 965 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 4448 CheckedPairsTotal, 68 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.1s, 99 ProgramPointsBefore, 43 ProgramPointsAfterwards, 99 TransitionsBefore, 38 TransitionsAfterwards, 2850 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 1485 VarBasedMoverChecksPositive, 46 VarBasedMoverChecksNegative, 20 SemBasedMoverChecksPositive, 54 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 5971 CheckedPairsTotal, 70 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.4s, 107 ProgramPointsBefore, 49 ProgramPointsAfterwards, 106 TransitionsBefore, 43 TransitionsAfterwards, 3660 CoEnabledTransitionPairs, 7 FixpointIterations, 21 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 9 ConcurrentYvCompositions, 5 ChoiceCompositions, 1619 VarBasedMoverChecksPositive, 42 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 52 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 8653 CheckedPairsTotal, 71 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 4.5s, 115 ProgramPointsBefore, 55 ProgramPointsAfterwards, 113 TransitionsBefore, 48 TransitionsAfterwards, 4550 CoEnabledTransitionPairs, 7 FixpointIterations, 25 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 2256 VarBasedMoverChecksPositive, 70 VarBasedMoverChecksNegative, 42 SemBasedMoverChecksPositive, 79 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 0 MoverChecksTotal, 11131 CheckedPairsTotal, 75 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 678]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 678). Cancelled while BasicCegarLoop was constructing initial abstraction,while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 55 places, 48 transitions, 194 flow. Already constructed 204064 states. Currently 32982 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 64 locations, 1 error locations. Started 7 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 224.3s, OverallIterations: 23, TraceHistogramMax: 7, AutomataDifference: 24.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 146.8s, HoareTripleCheckerStatistics: 552 SDtfs, 575 SDslu, 691 SDs, 0 SdLazy, 276 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 155 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127122occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 49.3s AutomataMinimizationTime, 17 MinimizatonAttempts, 5758 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 389 NumberOfCodeBlocks, 389 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 265 ConstructedInterpolants, 0 QuantifiedInterpolants, 17483 SizeOfPredicates, 6 NumberOfNonLiveVariables, 578 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 23 InterpolantComputations, 11 PerfectInterpolantSequences, 29/89 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown