/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/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread/sigma.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 04:43:13,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 04:43:13,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 04:43:13,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 04:43:13,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 04:43:13,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 04:43:13,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 04:43:13,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 04:43:13,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 04:43:13,676 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 04:43:13,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 04:43:13,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 04:43:13,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 04:43:13,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 04:43:13,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 04:43:13,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 04:43:13,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 04:43:13,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 04:43:13,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 04:43:13,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 04:43:13,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 04:43:13,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 04:43:13,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 04:43:13,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 04:43:13,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-27 04:43:13,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 04:43:13,700 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 04:43:13,700 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 04:43:13,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 04:43:13,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 04:43:13,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 04:43:13,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 04:43:13,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 04:43:13,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 04:43:13,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 04:43:13,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 04:43:13,705 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2019-12-27 04:43:13,733 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 04:43:13,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 04:43:13,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 04:43:13,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 04:43:13,735 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 04:43:13,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 04:43:13,735 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 04:43:13,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 04:43:13,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 04:43:13,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 04:43:13,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 04:43:13,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 04:43:13,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 04:43:13,737 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 04:43:13,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 04:43:13,737 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 04:43:13,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 04:43:13,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 04:43:13,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 04:43:13,738 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 04:43:13,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 04:43:13,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 04:43:13,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 04:43:13,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 04:43:13,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 04:43:13,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 04:43:13,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 04:43:13,741 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-27 04:43:13,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 04:43:13,741 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 04:43:14,091 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 04:43:14,110 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 04:43:14,115 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 04:43:14,116 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 04:43:14,117 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 04:43:14,118 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/sigma.i [2019-12-27 04:43:14,190 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1860d7acf/b6b7942506b9483a8e7f7f156eea0547/FLAG9ff7b4617 [2019-12-27 04:43:14,855 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 04:43:14,856 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/sigma.i [2019-12-27 04:43:14,884 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1860d7acf/b6b7942506b9483a8e7f7f156eea0547/FLAG9ff7b4617 [2019-12-27 04:43:15,021 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1860d7acf/b6b7942506b9483a8e7f7f156eea0547 [2019-12-27 04:43:15,032 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 04:43:15,034 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 04:43:15,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 04:43:15,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 04:43:15,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 04:43:15,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 04:43:15" (1/1) ... [2019-12-27 04:43:15,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c1ed74f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:43:15, skipping insertion in model container [2019-12-27 04:43:15,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 04:43:15" (1/1) ... [2019-12-27 04:43:15,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 04:43:15,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 04:43:15,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 04:43:15,766 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 04:43:15,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 04:43:15,989 INFO L208 MainTranslator]: Completed translation [2019-12-27 04:43:15,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:43:15 WrapperNode [2019-12-27 04:43:15,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 04:43:15,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 04:43:15,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 04:43:15,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 04:43:15,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:43:15" (1/1) ... [2019-12-27 04:43:16,021 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:43:15" (1/1) ... [2019-12-27 04:43:16,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 04:43:16,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 04:43:16,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 04:43:16,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 04:43:16,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:43:15" (1/1) ... [2019-12-27 04:43:16,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:43:15" (1/1) ... [2019-12-27 04:43:16,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:43:15" (1/1) ... [2019-12-27 04:43:16,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:43:15" (1/1) ... [2019-12-27 04:43:16,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:43:15" (1/1) ... [2019-12-27 04:43:16,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:43:15" (1/1) ... [2019-12-27 04:43:16,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:43:15" (1/1) ... [2019-12-27 04:43:16,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 04:43:16,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 04:43:16,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 04:43:16,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 04:43:16,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:43:15" (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 [2019-12-27 04:43:16,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 04:43:16,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-12-27 04:43:16,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 04:43:16,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-27 04:43:16,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 04:43:16,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-27 04:43:16,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-12-27 04:43:16,135 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2019-12-27 04:43:16,136 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2019-12-27 04:43:16,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 04:43:16,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 04:43:16,140 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-27 04:43:16,565 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 04:43:16,565 INFO L287 CfgBuilder]: Removed 9 assume(true) statements. [2019-12-27 04:43:16,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 04:43:16 BoogieIcfgContainer [2019-12-27 04:43:16,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 04:43:16,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 04:43:16,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 04:43:16,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 04:43:16,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 04:43:15" (1/3) ... [2019-12-27 04:43:16,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bdbdce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 04:43:16, skipping insertion in model container [2019-12-27 04:43:16,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:43:15" (2/3) ... [2019-12-27 04:43:16,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bdbdce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 04:43:16, skipping insertion in model container [2019-12-27 04:43:16,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 04:43:16" (3/3) ... [2019-12-27 04:43:16,576 INFO L109 eAbstractionObserver]: Analyzing ICFG sigma.i [2019-12-27 04:43:16,586 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 04:43:16,586 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 04:43:16,594 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 04:43:16,595 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 04:43:16,631 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:16,632 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:16,632 WARN L315 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:16,632 WARN L315 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:16,633 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:16,633 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:16,636 WARN L315 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:16,637 WARN L315 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:16,637 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:16,637 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:16,656 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-27 04:43:16,672 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 04:43:16,673 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 04:43:16,673 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 04:43:16,673 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 04:43:16,673 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 04:43:16,673 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 04:43:16,673 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 04:43:16,674 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 04:43:16,687 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 74 transitions [2019-12-27 04:43:16,688 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 71 places, 74 transitions [2019-12-27 04:43:16,742 INFO L132 PetriNetUnfolder]: 11/111 cut-off events. [2019-12-27 04:43:16,743 INFO L133 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2019-12-27 04:43:16,748 INFO L76 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 111 events. 11/111 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 194 event pairs. 0/95 useless extension candidates. Maximal degree in co-relation 57. Up to 4 conditions per place. [2019-12-27 04:43:16,751 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 71 places, 74 transitions [2019-12-27 04:43:16,780 INFO L132 PetriNetUnfolder]: 11/111 cut-off events. [2019-12-27 04:43:16,780 INFO L133 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2019-12-27 04:43:16,781 INFO L76 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 111 events. 11/111 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 194 event pairs. 0/95 useless extension candidates. Maximal degree in co-relation 57. Up to 4 conditions per place. [2019-12-27 04:43:16,783 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 344 [2019-12-27 04:43:16,784 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 04:43:18,370 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2019-12-27 04:43:18,785 WARN L192 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 86 [2019-12-27 04:43:18,916 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2019-12-27 04:43:18,920 INFO L206 etLargeBlockEncoding]: Checked pairs total: 278 [2019-12-27 04:43:18,921 INFO L214 etLargeBlockEncoding]: Total number of compositions: 61 [2019-12-27 04:43:18,925 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 17 transitions [2019-12-27 04:43:18,932 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 36 states. [2019-12-27 04:43:18,934 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-12-27 04:43:18,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-27 04:43:18,941 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:43:18,942 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-27 04:43:18,942 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:43:18,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:43:18,948 INFO L82 PathProgramCache]: Analyzing trace with hash 8650828, now seen corresponding path program 1 times [2019-12-27 04:43:18,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:43:18,959 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083958941] [2019-12-27 04:43:18,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:43:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:19,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:43:19,125 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083958941] [2019-12-27 04:43:19,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:43:19,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 04:43:19,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947713524] [2019-12-27 04:43:19,131 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 04:43:19,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:43:19,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 04:43:19,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 04:43:19,148 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2019-12-27 04:43:19,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:43:19,222 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2019-12-27 04:43:19,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 04:43:19,224 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-27 04:43:19,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:43:19,242 INFO L225 Difference]: With dead ends: 36 [2019-12-27 04:43:19,242 INFO L226 Difference]: Without dead ends: 31 [2019-12-27 04:43:19,263 INFO L631 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 [2019-12-27 04:43:19,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-12-27 04:43:19,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-12-27 04:43:19,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-27 04:43:19,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 43 transitions. [2019-12-27 04:43:19,299 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 43 transitions. Word has length 4 [2019-12-27 04:43:19,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:43:19,299 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 43 transitions. [2019-12-27 04:43:19,299 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 04:43:19,299 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 43 transitions. [2019-12-27 04:43:19,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-27 04:43:19,300 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:43:19,300 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:43:19,300 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:43:19,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:43:19,301 INFO L82 PathProgramCache]: Analyzing trace with hash -877197858, now seen corresponding path program 1 times [2019-12-27 04:43:19,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:43:19,301 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188109677] [2019-12-27 04:43:19,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:43:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:19,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-27 04:43:19,465 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188109677] [2019-12-27 04:43:19,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:43:19,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 04:43:19,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615821588] [2019-12-27 04:43:19,467 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 04:43:19,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:43:19,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 04:43:19,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:43:19,469 INFO L87 Difference]: Start difference. First operand 31 states and 43 transitions. Second operand 4 states. [2019-12-27 04:43:19,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:43:19,511 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2019-12-27 04:43:19,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 04:43:19,511 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-27 04:43:19,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:43:19,513 INFO L225 Difference]: With dead ends: 28 [2019-12-27 04:43:19,513 INFO L226 Difference]: Without dead ends: 28 [2019-12-27 04:43:19,514 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:43:19,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-12-27 04:43:19,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-12-27 04:43:19,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-27 04:43:19,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2019-12-27 04:43:19,519 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 9 [2019-12-27 04:43:19,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:43:19,520 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2019-12-27 04:43:19,520 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 04:43:19,520 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2019-12-27 04:43:19,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-27 04:43:19,521 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:43:19,521 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2019-12-27 04:43:19,521 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:43:19,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:43:19,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1422843402, now seen corresponding path program 1 times [2019-12-27 04:43:19,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:43:19,522 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977947862] [2019-12-27 04:43:19,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:43:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 04:43:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 04:43:19,620 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-27 04:43:19,621 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-27 04:43:19,621 WARN L364 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-27 04:43:19,621 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2019-12-27 04:43:19,629 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:19,629 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:19,630 WARN L315 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:19,630 WARN L315 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:19,630 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:19,630 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:19,631 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:19,631 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:19,631 WARN L315 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:19,632 WARN L315 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:19,633 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:19,633 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:19,634 WARN L315 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:19,634 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:19,634 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:19,635 WARN L315 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:19,641 WARN L315 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:19,642 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:19,642 WARN L315 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:19,642 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:19,646 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-27 04:43:19,646 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 04:43:19,646 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 04:43:19,646 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 04:43:19,646 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 04:43:19,647 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 04:43:19,647 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 04:43:19,647 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 04:43:19,647 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 04:43:19,651 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 80 transitions [2019-12-27 04:43:19,652 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 78 places, 80 transitions [2019-12-27 04:43:19,693 INFO L132 PetriNetUnfolder]: 22/199 cut-off events. [2019-12-27 04:43:19,694 INFO L133 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2019-12-27 04:43:19,697 INFO L76 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 199 events. 22/199 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 423 event pairs. 0/169 useless extension candidates. Maximal degree in co-relation 113. Up to 8 conditions per place. [2019-12-27 04:43:19,701 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 78 places, 80 transitions [2019-12-27 04:43:19,752 INFO L132 PetriNetUnfolder]: 22/199 cut-off events. [2019-12-27 04:43:19,752 INFO L133 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2019-12-27 04:43:19,755 INFO L76 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 199 events. 22/199 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 423 event pairs. 0/169 useless extension candidates. Maximal degree in co-relation 113. Up to 8 conditions per place. [2019-12-27 04:43:19,759 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 824 [2019-12-27 04:43:19,759 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 04:43:21,126 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2019-12-27 04:43:21,461 WARN L192 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 86 [2019-12-27 04:43:21,556 INFO L206 etLargeBlockEncoding]: Checked pairs total: 733 [2019-12-27 04:43:21,557 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2019-12-27 04:43:21,557 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 22 transitions [2019-12-27 04:43:21,563 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 109 states. [2019-12-27 04:43:21,564 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states. [2019-12-27 04:43:21,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-27 04:43:21,564 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:43:21,565 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-27 04:43:21,565 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:43:21,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:43:21,565 INFO L82 PathProgramCache]: Analyzing trace with hash 13330920, now seen corresponding path program 1 times [2019-12-27 04:43:21,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:43:21,566 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122310877] [2019-12-27 04:43:21,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:43:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:21,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:43:21,632 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122310877] [2019-12-27 04:43:21,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:43:21,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 04:43:21,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931807995] [2019-12-27 04:43:21,634 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 04:43:21,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:43:21,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 04:43:21,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:43:21,635 INFO L87 Difference]: Start difference. First operand 109 states. Second operand 4 states. [2019-12-27 04:43:21,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:43:21,688 INFO L93 Difference]: Finished difference Result 110 states and 180 transitions. [2019-12-27 04:43:21,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 04:43:21,689 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-12-27 04:43:21,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:43:21,691 INFO L225 Difference]: With dead ends: 110 [2019-12-27 04:43:21,691 INFO L226 Difference]: Without dead ends: 103 [2019-12-27 04:43:21,691 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:43:21,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-12-27 04:43:21,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 97. [2019-12-27 04:43:21,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2019-12-27 04:43:21,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 164 transitions. [2019-12-27 04:43:21,707 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 164 transitions. Word has length 4 [2019-12-27 04:43:21,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:43:21,707 INFO L462 AbstractCegarLoop]: Abstraction has 97 states and 164 transitions. [2019-12-27 04:43:21,707 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 04:43:21,707 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 164 transitions. [2019-12-27 04:43:21,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-27 04:43:21,709 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:43:21,709 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:43:21,709 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:43:21,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:43:21,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1478794564, now seen corresponding path program 1 times [2019-12-27 04:43:21,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:43:21,710 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23950982] [2019-12-27 04:43:21,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:43:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:21,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:43:21,874 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23950982] [2019-12-27 04:43:21,877 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363968922] [2019-12-27 04:43:21,878 INFO L94 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 [2019-12-27 04:43:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:21,987 INFO L264 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-27 04:43:21,989 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:43:22,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:43:22,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:43:22,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2019-12-27 04:43:22,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852974590] [2019-12-27 04:43:22,042 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-27 04:43:22,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:43:22,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-27 04:43:22,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2019-12-27 04:43:22,043 INFO L87 Difference]: Start difference. First operand 97 states and 164 transitions. Second operand 7 states. [2019-12-27 04:43:22,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:43:22,116 INFO L93 Difference]: Finished difference Result 84 states and 138 transitions. [2019-12-27 04:43:22,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 04:43:22,116 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-12-27 04:43:22,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:43:22,118 INFO L225 Difference]: With dead ends: 84 [2019-12-27 04:43:22,118 INFO L226 Difference]: Without dead ends: 84 [2019-12-27 04:43:22,118 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2019-12-27 04:43:22,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2019-12-27 04:43:22,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2019-12-27 04:43:22,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2019-12-27 04:43:22,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 138 transitions. [2019-12-27 04:43:22,127 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 138 transitions. Word has length 17 [2019-12-27 04:43:22,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:43:22,127 INFO L462 AbstractCegarLoop]: Abstraction has 84 states and 138 transitions. [2019-12-27 04:43:22,127 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-27 04:43:22,127 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 138 transitions. [2019-12-27 04:43:22,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-27 04:43:22,128 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:43:22,128 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1] [2019-12-27 04:43:22,333 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:43:22,333 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:43:22,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:43:22,334 INFO L82 PathProgramCache]: Analyzing trace with hash -273903233, now seen corresponding path program 1 times [2019-12-27 04:43:22,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:43:22,335 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890508306] [2019-12-27 04:43:22,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:43:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 04:43:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 04:43:22,405 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-27 04:43:22,405 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-27 04:43:22,405 WARN L364 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-27 04:43:22,405 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2019-12-27 04:43:22,413 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:22,413 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:22,413 WARN L315 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:22,413 WARN L315 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:22,413 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:22,414 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:22,414 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:22,414 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:22,414 WARN L315 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:22,414 WARN L315 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:22,415 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:22,415 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:22,415 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:22,415 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:22,415 WARN L315 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:22,415 WARN L315 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:22,416 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:22,416 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:22,416 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:22,416 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:22,416 WARN L315 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:22,417 WARN L315 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:22,420 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:22,420 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:22,420 WARN L315 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:22,420 WARN L315 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:22,421 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:22,421 WARN L315 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:22,422 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:22,422 WARN L315 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:22,429 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-27 04:43:22,430 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 04:43:22,430 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 04:43:22,430 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 04:43:22,430 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 04:43:22,430 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 04:43:22,430 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 04:43:22,430 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 04:43:22,430 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 04:43:22,432 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 86 transitions [2019-12-27 04:43:22,432 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 85 places, 86 transitions [2019-12-27 04:43:22,482 INFO L132 PetriNetUnfolder]: 44/358 cut-off events. [2019-12-27 04:43:22,482 INFO L133 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2019-12-27 04:43:22,485 INFO L76 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 358 events. 44/358 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1032 event pairs. 0/302 useless extension candidates. Maximal degree in co-relation 207. Up to 16 conditions per place. [2019-12-27 04:43:22,490 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 85 places, 86 transitions [2019-12-27 04:43:22,528 INFO L132 PetriNetUnfolder]: 44/358 cut-off events. [2019-12-27 04:43:22,528 INFO L133 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2019-12-27 04:43:22,531 INFO L76 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 358 events. 44/358 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1032 event pairs. 0/302 useless extension candidates. Maximal degree in co-relation 207. Up to 16 conditions per place. [2019-12-27 04:43:22,536 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1320 [2019-12-27 04:43:22,537 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 04:43:24,247 WARN L192 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2019-12-27 04:43:24,350 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1071 [2019-12-27 04:43:24,350 INFO L214 etLargeBlockEncoding]: Total number of compositions: 67 [2019-12-27 04:43:24,351 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 25 transitions [2019-12-27 04:43:24,361 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 297 states. [2019-12-27 04:43:24,361 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states. [2019-12-27 04:43:24,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-27 04:43:24,362 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:43:24,362 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-27 04:43:24,362 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:43:24,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:43:24,362 INFO L82 PathProgramCache]: Analyzing trace with hash 18343786, now seen corresponding path program 1 times [2019-12-27 04:43:24,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:43:24,363 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437014879] [2019-12-27 04:43:24,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:43:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:24,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:43:24,404 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437014879] [2019-12-27 04:43:24,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:43:24,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 04:43:24,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543447513] [2019-12-27 04:43:24,405 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 04:43:24,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:43:24,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 04:43:24,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:43:24,406 INFO L87 Difference]: Start difference. First operand 297 states. Second operand 4 states. [2019-12-27 04:43:24,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:43:24,461 INFO L93 Difference]: Finished difference Result 320 states and 648 transitions. [2019-12-27 04:43:24,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 04:43:24,461 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-12-27 04:43:24,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:43:24,466 INFO L225 Difference]: With dead ends: 320 [2019-12-27 04:43:24,466 INFO L226 Difference]: Without dead ends: 299 [2019-12-27 04:43:24,466 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:43:24,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2019-12-27 04:43:24,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 277. [2019-12-27 04:43:24,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2019-12-27 04:43:24,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 577 transitions. [2019-12-27 04:43:24,491 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 577 transitions. Word has length 4 [2019-12-27 04:43:24,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:43:24,491 INFO L462 AbstractCegarLoop]: Abstraction has 277 states and 577 transitions. [2019-12-27 04:43:24,491 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 04:43:24,491 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 577 transitions. [2019-12-27 04:43:24,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-27 04:43:24,492 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:43:24,492 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:43:24,492 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:43:24,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:43:24,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1584588976, now seen corresponding path program 1 times [2019-12-27 04:43:24,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:43:24,493 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814379668] [2019-12-27 04:43:24,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:43:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:24,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:43:24,554 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814379668] [2019-12-27 04:43:24,554 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497413693] [2019-12-27 04:43:24,554 INFO L94 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 [2019-12-27 04:43:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:24,611 INFO L264 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-27 04:43:24,612 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:43:24,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:43:24,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:43:24,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2019-12-27 04:43:24,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964180726] [2019-12-27 04:43:24,638 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-27 04:43:24,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:43:24,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-27 04:43:24,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-27 04:43:24,640 INFO L87 Difference]: Start difference. First operand 277 states and 577 transitions. Second operand 6 states. [2019-12-27 04:43:24,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:43:24,685 INFO L93 Difference]: Finished difference Result 275 states and 572 transitions. [2019-12-27 04:43:24,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 04:43:24,686 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-12-27 04:43:24,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:43:24,688 INFO L225 Difference]: With dead ends: 275 [2019-12-27 04:43:24,688 INFO L226 Difference]: Without dead ends: 275 [2019-12-27 04:43:24,688 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-27 04:43:24,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2019-12-27 04:43:24,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2019-12-27 04:43:24,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2019-12-27 04:43:24,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 572 transitions. [2019-12-27 04:43:24,704 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 572 transitions. Word has length 17 [2019-12-27 04:43:24,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:43:24,704 INFO L462 AbstractCegarLoop]: Abstraction has 275 states and 572 transitions. [2019-12-27 04:43:24,705 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-27 04:43:24,705 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 572 transitions. [2019-12-27 04:43:24,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-27 04:43:24,707 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:43:24,707 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:43:24,910 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:43:24,910 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:43:24,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:43:24,911 INFO L82 PathProgramCache]: Analyzing trace with hash 2065278432, now seen corresponding path program 1 times [2019-12-27 04:43:24,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:43:24,912 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825506574] [2019-12-27 04:43:24,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:43:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:24,979 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:43:24,979 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825506574] [2019-12-27 04:43:24,980 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648510410] [2019-12-27 04:43:24,980 INFO L94 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 [2019-12-27 04:43:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:25,046 INFO L264 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-27 04:43:25,047 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:43:25,093 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:43:25,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:43:25,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2019-12-27 04:43:25,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623667089] [2019-12-27 04:43:25,095 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-27 04:43:25,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:43:25,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-27 04:43:25,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-12-27 04:43:25,097 INFO L87 Difference]: Start difference. First operand 275 states and 572 transitions. Second operand 8 states. [2019-12-27 04:43:25,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:43:25,157 INFO L93 Difference]: Finished difference Result 271 states and 560 transitions. [2019-12-27 04:43:25,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 04:43:25,158 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2019-12-27 04:43:25,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:43:25,160 INFO L225 Difference]: With dead ends: 271 [2019-12-27 04:43:25,161 INFO L226 Difference]: Without dead ends: 271 [2019-12-27 04:43:25,161 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-12-27 04:43:25,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2019-12-27 04:43:25,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2019-12-27 04:43:25,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2019-12-27 04:43:25,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 560 transitions. [2019-12-27 04:43:25,174 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 560 transitions. Word has length 23 [2019-12-27 04:43:25,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:43:25,174 INFO L462 AbstractCegarLoop]: Abstraction has 271 states and 560 transitions. [2019-12-27 04:43:25,174 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-27 04:43:25,174 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 560 transitions. [2019-12-27 04:43:25,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-27 04:43:25,176 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:43:25,176 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2019-12-27 04:43:25,379 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:43:25,379 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:43:25,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:43:25,380 INFO L82 PathProgramCache]: Analyzing trace with hash -319556423, now seen corresponding path program 1 times [2019-12-27 04:43:25,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:43:25,380 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786530045] [2019-12-27 04:43:25,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:43:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 04:43:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 04:43:25,427 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-27 04:43:25,428 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-27 04:43:25,428 WARN L364 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-27 04:43:25,428 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2019-12-27 04:43:25,437 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,437 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,437 WARN L315 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,437 WARN L315 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,438 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,438 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,438 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,438 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,438 WARN L315 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,438 WARN L315 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,439 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,439 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,439 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,439 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,439 WARN L315 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,439 WARN L315 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,440 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,440 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,440 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,440 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,440 WARN L315 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,440 WARN L315 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,441 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,441 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,441 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,441 WARN L315 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,442 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,442 WARN L315 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,443 WARN L315 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,444 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,444 WARN L315 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,444 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,451 WARN L315 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,451 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,451 WARN L315 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,451 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,452 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,453 WARN L315 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,453 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,453 WARN L315 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:25,458 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-27 04:43:25,458 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 04:43:25,458 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 04:43:25,458 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 04:43:25,458 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 04:43:25,458 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 04:43:25,459 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 04:43:25,459 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 04:43:25,459 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 04:43:25,460 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 92 transitions [2019-12-27 04:43:25,460 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 92 places, 92 transitions [2019-12-27 04:43:25,548 INFO L132 PetriNetUnfolder]: 90/661 cut-off events. [2019-12-27 04:43:25,548 INFO L133 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2019-12-27 04:43:25,553 INFO L76 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 661 events. 90/661 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2629 event pairs. 0/555 useless extension candidates. Maximal degree in co-relation 378. Up to 32 conditions per place. [2019-12-27 04:43:25,565 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 92 places, 92 transitions [2019-12-27 04:43:25,649 INFO L132 PetriNetUnfolder]: 90/661 cut-off events. [2019-12-27 04:43:25,649 INFO L133 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2019-12-27 04:43:25,654 INFO L76 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 661 events. 90/661 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2629 event pairs. 0/555 useless extension candidates. Maximal degree in co-relation 378. Up to 32 conditions per place. [2019-12-27 04:43:25,668 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1872 [2019-12-27 04:43:25,668 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 04:43:27,310 WARN L192 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2019-12-27 04:43:27,609 WARN L192 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2019-12-27 04:43:27,727 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2019-12-27 04:43:27,733 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1448 [2019-12-27 04:43:27,733 INFO L214 etLargeBlockEncoding]: Total number of compositions: 68 [2019-12-27 04:43:27,734 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 28 transitions [2019-12-27 04:43:27,757 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 817 states. [2019-12-27 04:43:27,757 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states. [2019-12-27 04:43:27,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-27 04:43:27,757 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:43:27,758 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-27 04:43:27,758 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:43:27,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:43:27,758 INFO L82 PathProgramCache]: Analyzing trace with hash 23578740, now seen corresponding path program 1 times [2019-12-27 04:43:27,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:43:27,758 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405744125] [2019-12-27 04:43:27,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:43:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:27,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:43:27,785 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405744125] [2019-12-27 04:43:27,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:43:27,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 04:43:27,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346305400] [2019-12-27 04:43:27,786 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 04:43:27,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:43:27,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 04:43:27,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:43:27,787 INFO L87 Difference]: Start difference. First operand 817 states. Second operand 4 states. [2019-12-27 04:43:27,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:43:27,836 INFO L93 Difference]: Finished difference Result 910 states and 2204 transitions. [2019-12-27 04:43:27,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 04:43:27,836 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-12-27 04:43:27,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:43:27,844 INFO L225 Difference]: With dead ends: 910 [2019-12-27 04:43:27,844 INFO L226 Difference]: Without dead ends: 843 [2019-12-27 04:43:27,845 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:43:27,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2019-12-27 04:43:27,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 781. [2019-12-27 04:43:27,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 781 states. [2019-12-27 04:43:27,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1934 transitions. [2019-12-27 04:43:27,900 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1934 transitions. Word has length 4 [2019-12-27 04:43:27,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:43:27,900 INFO L462 AbstractCegarLoop]: Abstraction has 781 states and 1934 transitions. [2019-12-27 04:43:27,900 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 04:43:27,900 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1934 transitions. [2019-12-27 04:43:27,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-27 04:43:27,905 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:43:27,906 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:43:27,906 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:43:27,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:43:27,907 INFO L82 PathProgramCache]: Analyzing trace with hash -174506730, now seen corresponding path program 1 times [2019-12-27 04:43:27,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:43:27,907 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247207799] [2019-12-27 04:43:27,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:43:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:27,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:43:27,963 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247207799] [2019-12-27 04:43:27,964 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621255483] [2019-12-27 04:43:27,964 INFO L94 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 [2019-12-27 04:43:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:28,022 INFO L264 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-27 04:43:28,024 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:43:28,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:43:28,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:43:28,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2019-12-27 04:43:28,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073147718] [2019-12-27 04:43:28,053 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-27 04:43:28,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:43:28,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-27 04:43:28,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-27 04:43:28,054 INFO L87 Difference]: Start difference. First operand 781 states and 1934 transitions. Second operand 6 states. [2019-12-27 04:43:28,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:43:28,093 INFO L93 Difference]: Finished difference Result 779 states and 1929 transitions. [2019-12-27 04:43:28,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 04:43:28,094 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-12-27 04:43:28,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:43:28,099 INFO L225 Difference]: With dead ends: 779 [2019-12-27 04:43:28,099 INFO L226 Difference]: Without dead ends: 779 [2019-12-27 04:43:28,099 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-27 04:43:28,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2019-12-27 04:43:28,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 779. [2019-12-27 04:43:28,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 779 states. [2019-12-27 04:43:28,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1929 transitions. [2019-12-27 04:43:28,124 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1929 transitions. Word has length 17 [2019-12-27 04:43:28,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:43:28,125 INFO L462 AbstractCegarLoop]: Abstraction has 779 states and 1929 transitions. [2019-12-27 04:43:28,125 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-27 04:43:28,125 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1929 transitions. [2019-12-27 04:43:28,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-27 04:43:28,129 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:43:28,129 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:43:28,332 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:43:28,332 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:43:28,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:43:28,333 INFO L82 PathProgramCache]: Analyzing trace with hash 606451066, now seen corresponding path program 1 times [2019-12-27 04:43:28,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:43:28,335 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531003715] [2019-12-27 04:43:28,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:43:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:28,390 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:43:28,390 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531003715] [2019-12-27 04:43:28,391 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391980242] [2019-12-27 04:43:28,391 INFO L94 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 [2019-12-27 04:43:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:28,457 INFO L264 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-27 04:43:28,459 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:43:28,497 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:43:28,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:43:28,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2019-12-27 04:43:28,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109548576] [2019-12-27 04:43:28,498 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-27 04:43:28,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:43:28,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-27 04:43:28,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-12-27 04:43:28,499 INFO L87 Difference]: Start difference. First operand 779 states and 1929 transitions. Second operand 8 states. [2019-12-27 04:43:28,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:43:28,564 INFO L93 Difference]: Finished difference Result 775 states and 1917 transitions. [2019-12-27 04:43:28,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 04:43:28,564 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2019-12-27 04:43:28,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:43:28,569 INFO L225 Difference]: With dead ends: 775 [2019-12-27 04:43:28,570 INFO L226 Difference]: Without dead ends: 775 [2019-12-27 04:43:28,570 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-12-27 04:43:28,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2019-12-27 04:43:28,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 775. [2019-12-27 04:43:28,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2019-12-27 04:43:28,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1917 transitions. [2019-12-27 04:43:28,594 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1917 transitions. Word has length 23 [2019-12-27 04:43:28,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:43:28,594 INFO L462 AbstractCegarLoop]: Abstraction has 775 states and 1917 transitions. [2019-12-27 04:43:28,594 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-27 04:43:28,594 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1917 transitions. [2019-12-27 04:43:28,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-12-27 04:43:28,596 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:43:28,596 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:43:28,800 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:43:28,800 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:43:28,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:43:28,800 INFO L82 PathProgramCache]: Analyzing trace with hash -686229443, now seen corresponding path program 1 times [2019-12-27 04:43:28,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:43:28,801 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279261367] [2019-12-27 04:43:28,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:43:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:28,878 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:43:28,879 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279261367] [2019-12-27 04:43:28,880 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083443936] [2019-12-27 04:43:28,880 INFO L94 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 [2019-12-27 04:43:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:28,948 INFO L264 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-27 04:43:28,952 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:43:29,006 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:43:29,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:43:29,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2019-12-27 04:43:29,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635888460] [2019-12-27 04:43:29,007 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-27 04:43:29,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:43:29,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-27 04:43:29,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2019-12-27 04:43:29,008 INFO L87 Difference]: Start difference. First operand 775 states and 1917 transitions. Second operand 10 states. [2019-12-27 04:43:29,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:43:29,086 INFO L93 Difference]: Finished difference Result 767 states and 1889 transitions. [2019-12-27 04:43:29,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 04:43:29,087 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2019-12-27 04:43:29,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:43:29,092 INFO L225 Difference]: With dead ends: 767 [2019-12-27 04:43:29,093 INFO L226 Difference]: Without dead ends: 767 [2019-12-27 04:43:29,093 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2019-12-27 04:43:29,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2019-12-27 04:43:29,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 767. [2019-12-27 04:43:29,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 767 states. [2019-12-27 04:43:29,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1889 transitions. [2019-12-27 04:43:29,123 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1889 transitions. Word has length 29 [2019-12-27 04:43:29,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:43:29,123 INFO L462 AbstractCegarLoop]: Abstraction has 767 states and 1889 transitions. [2019-12-27 04:43:29,123 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-27 04:43:29,124 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1889 transitions. [2019-12-27 04:43:29,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-12-27 04:43:29,127 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:43:29,127 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2019-12-27 04:43:29,337 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:43:29,337 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:43:29,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:43:29,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1444925388, now seen corresponding path program 1 times [2019-12-27 04:43:29,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:43:29,338 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893443452] [2019-12-27 04:43:29,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:43:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 04:43:29,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 04:43:29,413 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-27 04:43:29,413 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-27 04:43:29,413 WARN L364 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-27 04:43:29,413 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2019-12-27 04:43:29,421 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,421 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,421 WARN L315 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,421 WARN L315 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,422 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,422 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,422 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,422 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,422 WARN L315 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,422 WARN L315 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,422 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,422 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,422 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,422 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,423 WARN L315 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,423 WARN L315 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,423 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,423 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,423 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,423 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,423 WARN L315 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,423 WARN L315 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,423 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,423 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,424 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,424 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,424 WARN L315 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,424 WARN L315 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,424 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,424 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,424 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,424 WARN L315 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,425 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,425 WARN L315 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,426 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,426 WARN L315 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,426 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,426 WARN L315 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,427 WARN L315 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,427 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,427 WARN L315 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,428 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,429 WARN L315 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,429 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,430 WARN L315 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,430 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,431 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,431 WARN L315 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,432 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,432 WARN L315 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:29,436 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-27 04:43:29,436 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 04:43:29,437 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 04:43:29,437 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 04:43:29,437 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 04:43:29,437 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 04:43:29,437 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 04:43:29,437 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 04:43:29,437 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 04:43:29,439 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 98 transitions [2019-12-27 04:43:29,439 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 99 places, 98 transitions [2019-12-27 04:43:29,749 INFO L132 PetriNetUnfolder]: 188/1256 cut-off events. [2019-12-27 04:43:29,749 INFO L133 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2019-12-27 04:43:29,759 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1367 conditions, 1256 events. 188/1256 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 6683 event pairs. 0/1052 useless extension candidates. Maximal degree in co-relation 706. Up to 80 conditions per place. [2019-12-27 04:43:29,799 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 99 places, 98 transitions [2019-12-27 04:43:30,048 INFO L132 PetriNetUnfolder]: 188/1256 cut-off events. [2019-12-27 04:43:30,048 INFO L133 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2019-12-27 04:43:30,059 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1367 conditions, 1256 events. 188/1256 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 6683 event pairs. 0/1052 useless extension candidates. Maximal degree in co-relation 706. Up to 80 conditions per place. [2019-12-27 04:43:30,086 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2480 [2019-12-27 04:43:30,086 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 04:43:31,629 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2019-12-27 04:43:31,978 WARN L192 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2019-12-27 04:43:32,080 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2019-12-27 04:43:32,118 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2037 [2019-12-27 04:43:32,118 INFO L214 etLargeBlockEncoding]: Total number of compositions: 72 [2019-12-27 04:43:32,118 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 31 transitions [2019-12-27 04:43:32,211 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2289 states. [2019-12-27 04:43:32,212 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states. [2019-12-27 04:43:32,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-27 04:43:32,212 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:43:32,212 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-27 04:43:32,212 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:43:32,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:43:32,213 INFO L82 PathProgramCache]: Analyzing trace with hash 29088089, now seen corresponding path program 1 times [2019-12-27 04:43:32,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:43:32,213 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600746653] [2019-12-27 04:43:32,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:43:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:32,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:43:32,228 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600746653] [2019-12-27 04:43:32,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:43:32,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 04:43:32,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764924377] [2019-12-27 04:43:32,229 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 04:43:32,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:43:32,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 04:43:32,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 04:43:32,230 INFO L87 Difference]: Start difference. First operand 2289 states. Second operand 3 states. [2019-12-27 04:43:32,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:43:32,264 INFO L93 Difference]: Finished difference Result 2289 states and 6658 transitions. [2019-12-27 04:43:32,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 04:43:32,265 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-27 04:43:32,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:43:32,279 INFO L225 Difference]: With dead ends: 2289 [2019-12-27 04:43:32,279 INFO L226 Difference]: Without dead ends: 2044 [2019-12-27 04:43:32,279 INFO L631 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 [2019-12-27 04:43:32,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2019-12-27 04:43:32,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 2044. [2019-12-27 04:43:32,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2044 states. [2019-12-27 04:43:32,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 6008 transitions. [2019-12-27 04:43:32,357 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 6008 transitions. Word has length 4 [2019-12-27 04:43:32,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:43:32,357 INFO L462 AbstractCegarLoop]: Abstraction has 2044 states and 6008 transitions. [2019-12-27 04:43:32,357 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 04:43:32,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 6008 transitions. [2019-12-27 04:43:32,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-27 04:43:32,358 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:43:32,358 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:43:32,358 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:43:32,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:43:32,358 INFO L82 PathProgramCache]: Analyzing trace with hash 138335209, now seen corresponding path program 1 times [2019-12-27 04:43:32,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:43:32,359 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413573343] [2019-12-27 04:43:32,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:43:32,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:32,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-27 04:43:32,390 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413573343] [2019-12-27 04:43:32,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:43:32,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 04:43:32,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782833586] [2019-12-27 04:43:32,391 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 04:43:32,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:43:32,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 04:43:32,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:43:32,392 INFO L87 Difference]: Start difference. First operand 2044 states and 6008 transitions. Second operand 4 states. [2019-12-27 04:43:32,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:43:32,443 INFO L93 Difference]: Finished difference Result 2379 states and 6766 transitions. [2019-12-27 04:43:32,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 04:43:32,444 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-27 04:43:32,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:43:32,462 INFO L225 Difference]: With dead ends: 2379 [2019-12-27 04:43:32,463 INFO L226 Difference]: Without dead ends: 2379 [2019-12-27 04:43:32,464 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:43:32,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2379 states. [2019-12-27 04:43:32,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2379 to 2221. [2019-12-27 04:43:32,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2221 states. [2019-12-27 04:43:32,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2221 states to 2221 states and 6367 transitions. [2019-12-27 04:43:32,618 INFO L78 Accepts]: Start accepts. Automaton has 2221 states and 6367 transitions. Word has length 10 [2019-12-27 04:43:32,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:43:32,618 INFO L462 AbstractCegarLoop]: Abstraction has 2221 states and 6367 transitions. [2019-12-27 04:43:32,619 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 04:43:32,619 INFO L276 IsEmpty]: Start isEmpty. Operand 2221 states and 6367 transitions. [2019-12-27 04:43:32,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-27 04:43:32,620 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:43:32,620 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:43:32,620 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:43:32,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:43:32,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1136182213, now seen corresponding path program 1 times [2019-12-27 04:43:32,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:43:32,621 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297733466] [2019-12-27 04:43:32,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:43:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:32,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-27 04:43:32,677 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297733466] [2019-12-27 04:43:32,677 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758946736] [2019-12-27 04:43:32,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:43:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:32,750 INFO L264 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-27 04:43:32,751 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:43:32,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:43:32,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:43:32,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 8 [2019-12-27 04:43:32,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141928929] [2019-12-27 04:43:32,791 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-27 04:43:32,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:43:32,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-27 04:43:32,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-12-27 04:43:32,793 INFO L87 Difference]: Start difference. First operand 2221 states and 6367 transitions. Second operand 9 states. [2019-12-27 04:43:32,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:43:32,848 INFO L93 Difference]: Finished difference Result 2219 states and 6362 transitions. [2019-12-27 04:43:32,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 04:43:32,849 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2019-12-27 04:43:32,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:43:32,864 INFO L225 Difference]: With dead ends: 2219 [2019-12-27 04:43:32,864 INFO L226 Difference]: Without dead ends: 2219 [2019-12-27 04:43:32,865 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-12-27 04:43:32,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2219 states. [2019-12-27 04:43:32,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2219 to 2219. [2019-12-27 04:43:32,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2219 states. [2019-12-27 04:43:32,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2219 states to 2219 states and 6362 transitions. [2019-12-27 04:43:32,939 INFO L78 Accepts]: Start accepts. Automaton has 2219 states and 6362 transitions. Word has length 17 [2019-12-27 04:43:32,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:43:32,939 INFO L462 AbstractCegarLoop]: Abstraction has 2219 states and 6362 transitions. [2019-12-27 04:43:32,939 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-27 04:43:32,939 INFO L276 IsEmpty]: Start isEmpty. Operand 2219 states and 6362 transitions. [2019-12-27 04:43:32,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-27 04:43:32,940 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:43:32,940 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:43:33,143 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:43:33,144 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:43:33,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:43:33,144 INFO L82 PathProgramCache]: Analyzing trace with hash -130574714, now seen corresponding path program 1 times [2019-12-27 04:43:33,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:43:33,145 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641134666] [2019-12-27 04:43:33,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:43:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:33,211 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-27 04:43:33,212 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641134666] [2019-12-27 04:43:33,212 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923206455] [2019-12-27 04:43:33,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:43:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:33,289 INFO L264 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-27 04:43:33,290 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:43:33,326 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:43:33,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:43:33,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 10 [2019-12-27 04:43:33,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087126989] [2019-12-27 04:43:33,327 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-27 04:43:33,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:43:33,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-27 04:43:33,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-12-27 04:43:33,328 INFO L87 Difference]: Start difference. First operand 2219 states and 6362 transitions. Second operand 11 states. [2019-12-27 04:43:33,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:43:33,414 INFO L93 Difference]: Finished difference Result 2215 states and 6350 transitions. [2019-12-27 04:43:33,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 04:43:33,415 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2019-12-27 04:43:33,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:43:33,429 INFO L225 Difference]: With dead ends: 2215 [2019-12-27 04:43:33,429 INFO L226 Difference]: Without dead ends: 2215 [2019-12-27 04:43:33,430 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-12-27 04:43:33,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2215 states. [2019-12-27 04:43:33,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2215 to 2215. [2019-12-27 04:43:33,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2215 states. [2019-12-27 04:43:33,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 6350 transitions. [2019-12-27 04:43:33,496 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 6350 transitions. Word has length 23 [2019-12-27 04:43:33,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:43:33,496 INFO L462 AbstractCegarLoop]: Abstraction has 2215 states and 6350 transitions. [2019-12-27 04:43:33,496 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-27 04:43:33,496 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 6350 transitions. [2019-12-27 04:43:33,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-12-27 04:43:33,497 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:43:33,498 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:43:33,702 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:43:33,708 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:43:33,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:43:33,708 INFO L82 PathProgramCache]: Analyzing trace with hash -255340588, now seen corresponding path program 1 times [2019-12-27 04:43:33,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:43:33,709 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472917521] [2019-12-27 04:43:33,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:43:33,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:33,789 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-27 04:43:33,790 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472917521] [2019-12-27 04:43:33,790 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078730840] [2019-12-27 04:43:33,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:43:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:33,870 INFO L264 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-27 04:43:33,878 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:43:33,937 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:43:33,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:43:33,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2019-12-27 04:43:33,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795217436] [2019-12-27 04:43:33,939 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-27 04:43:33,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:43:33,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-27 04:43:33,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2019-12-27 04:43:33,940 INFO L87 Difference]: Start difference. First operand 2215 states and 6350 transitions. Second operand 13 states. [2019-12-27 04:43:34,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:43:34,043 INFO L93 Difference]: Finished difference Result 2207 states and 6322 transitions. [2019-12-27 04:43:34,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 04:43:34,044 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 29 [2019-12-27 04:43:34,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:43:34,059 INFO L225 Difference]: With dead ends: 2207 [2019-12-27 04:43:34,059 INFO L226 Difference]: Without dead ends: 2207 [2019-12-27 04:43:34,060 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2019-12-27 04:43:34,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2019-12-27 04:43:34,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 2207. [2019-12-27 04:43:34,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2207 states. [2019-12-27 04:43:34,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 6322 transitions. [2019-12-27 04:43:34,127 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 6322 transitions. Word has length 29 [2019-12-27 04:43:34,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:43:34,128 INFO L462 AbstractCegarLoop]: Abstraction has 2207 states and 6322 transitions. [2019-12-27 04:43:34,128 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-27 04:43:34,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 6322 transitions. [2019-12-27 04:43:34,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-12-27 04:43:34,130 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:43:34,131 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:43:34,335 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:43:34,343 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:43:34,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:43:34,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1503593471, now seen corresponding path program 1 times [2019-12-27 04:43:34,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:43:34,344 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133658467] [2019-12-27 04:43:34,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:43:34,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:34,506 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-27 04:43:34,507 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133658467] [2019-12-27 04:43:34,507 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363117089] [2019-12-27 04:43:34,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:43:34,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:34,595 INFO L264 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-27 04:43:34,597 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:43:34,669 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:43:34,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:43:34,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 14 [2019-12-27 04:43:34,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652271094] [2019-12-27 04:43:34,670 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-12-27 04:43:34,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:43:34,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-12-27 04:43:34,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2019-12-27 04:43:34,671 INFO L87 Difference]: Start difference. First operand 2207 states and 6322 transitions. Second operand 15 states. [2019-12-27 04:43:34,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:43:34,775 INFO L93 Difference]: Finished difference Result 2191 states and 6258 transitions. [2019-12-27 04:43:34,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-27 04:43:34,775 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 35 [2019-12-27 04:43:34,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:43:34,798 INFO L225 Difference]: With dead ends: 2191 [2019-12-27 04:43:34,798 INFO L226 Difference]: Without dead ends: 2191 [2019-12-27 04:43:34,799 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2019-12-27 04:43:34,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2191 states. [2019-12-27 04:43:34,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2191 to 2191. [2019-12-27 04:43:34,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2191 states. [2019-12-27 04:43:34,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2191 states to 2191 states and 6258 transitions. [2019-12-27 04:43:34,879 INFO L78 Accepts]: Start accepts. Automaton has 2191 states and 6258 transitions. Word has length 35 [2019-12-27 04:43:34,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:43:34,881 INFO L462 AbstractCegarLoop]: Abstraction has 2191 states and 6258 transitions. [2019-12-27 04:43:34,881 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-12-27 04:43:34,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2191 states and 6258 transitions. [2019-12-27 04:43:34,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-12-27 04:43:34,884 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:43:34,884 INFO L411 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:43:35,089 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:43:35,090 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:43:35,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:43:35,090 INFO L82 PathProgramCache]: Analyzing trace with hash 2016252618, now seen corresponding path program 1 times [2019-12-27 04:43:35,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:43:35,090 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765912939] [2019-12-27 04:43:35,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:43:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 04:43:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 04:43:35,126 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-27 04:43:35,126 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-27 04:43:35,126 WARN L364 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-27 04:43:35,126 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2019-12-27 04:43:35,136 WARN L315 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,136 WARN L315 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,136 WARN L315 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,136 WARN L315 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,136 WARN L315 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,136 WARN L315 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,137 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,137 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,137 WARN L315 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,137 WARN L315 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,137 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,137 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,137 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,137 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,138 WARN L315 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,138 WARN L315 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,138 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,138 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,138 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,138 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,138 WARN L315 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,139 WARN L315 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,139 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,139 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,139 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,139 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,139 WARN L315 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,139 WARN L315 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,139 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,140 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,140 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,140 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,140 WARN L315 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,140 WARN L315 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,140 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,140 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,141 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,141 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,141 WARN L315 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,141 WARN L315 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,142 WARN L315 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,143 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,143 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,143 WARN L315 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,144 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,144 WARN L315 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,144 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,144 WARN L315 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,145 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,145 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,145 WARN L315 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,146 WARN L315 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,146 WARN L315 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,147 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,147 WARN L315 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,147 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,148 WARN L315 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,148 WARN L315 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,148 WARN L315 ript$VariableManager]: TermVariabe |threadThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,148 WARN L315 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:35,153 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-27 04:43:35,154 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 04:43:35,154 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 04:43:35,154 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 04:43:35,154 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 04:43:35,154 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 04:43:35,154 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 04:43:35,154 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 04:43:35,154 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 04:43:35,155 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 104 transitions [2019-12-27 04:43:35,156 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 106 places, 104 transitions [2019-12-27 04:43:35,732 INFO L132 PetriNetUnfolder]: 398/2443 cut-off events. [2019-12-27 04:43:35,732 INFO L133 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2019-12-27 04:43:35,751 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2675 conditions, 2443 events. 398/2443 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 16457 event pairs. 0/2045 useless extension candidates. Maximal degree in co-relation 1355. Up to 192 conditions per place. [2019-12-27 04:43:35,796 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 106 places, 104 transitions [2019-12-27 04:43:36,387 INFO L132 PetriNetUnfolder]: 398/2443 cut-off events. [2019-12-27 04:43:36,387 INFO L133 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2019-12-27 04:43:36,411 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2675 conditions, 2443 events. 398/2443 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 16457 event pairs. 0/2045 useless extension candidates. Maximal degree in co-relation 1355. Up to 192 conditions per place. [2019-12-27 04:43:36,469 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3144 [2019-12-27 04:43:36,469 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 04:43:38,106 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2019-12-27 04:43:38,423 WARN L192 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2019-12-27 04:43:38,787 WARN L192 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2019-12-27 04:43:38,882 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2554 [2019-12-27 04:43:38,882 INFO L214 etLargeBlockEncoding]: Total number of compositions: 75 [2019-12-27 04:43:38,883 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 34 transitions [2019-12-27 04:43:39,288 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6529 states. [2019-12-27 04:43:39,288 INFO L276 IsEmpty]: Start isEmpty. Operand 6529 states. [2019-12-27 04:43:39,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-27 04:43:39,288 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:43:39,288 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-27 04:43:39,289 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:43:39,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:43:39,289 INFO L82 PathProgramCache]: Analyzing trace with hash 34932643, now seen corresponding path program 1 times [2019-12-27 04:43:39,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:43:39,289 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346709600] [2019-12-27 04:43:39,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:43:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:39,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:43:39,309 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346709600] [2019-12-27 04:43:39,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:43:39,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 04:43:39,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950125016] [2019-12-27 04:43:39,310 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 04:43:39,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:43:39,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 04:43:39,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:43:39,310 INFO L87 Difference]: Start difference. First operand 6529 states. Second operand 4 states. [2019-12-27 04:43:39,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:43:39,379 INFO L93 Difference]: Finished difference Result 7446 states and 23888 transitions. [2019-12-27 04:43:39,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 04:43:39,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-12-27 04:43:39,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:43:39,416 INFO L225 Difference]: With dead ends: 7446 [2019-12-27 04:43:39,416 INFO L226 Difference]: Without dead ends: 6779 [2019-12-27 04:43:39,417 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:43:39,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6779 states. [2019-12-27 04:43:39,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6779 to 6397. [2019-12-27 04:43:39,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6397 states. [2019-12-27 04:43:39,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6397 states to 6397 states and 20804 transitions. [2019-12-27 04:43:39,635 INFO L78 Accepts]: Start accepts. Automaton has 6397 states and 20804 transitions. Word has length 4 [2019-12-27 04:43:39,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:43:39,636 INFO L462 AbstractCegarLoop]: Abstraction has 6397 states and 20804 transitions. [2019-12-27 04:43:39,636 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 04:43:39,637 INFO L276 IsEmpty]: Start isEmpty. Operand 6397 states and 20804 transitions. [2019-12-27 04:43:39,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-27 04:43:39,637 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:43:39,637 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:43:39,637 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:43:39,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:43:39,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1760908010, now seen corresponding path program 1 times [2019-12-27 04:43:39,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:43:39,638 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785686683] [2019-12-27 04:43:39,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:43:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:39,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:43:39,676 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785686683] [2019-12-27 04:43:39,676 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467642762] [2019-12-27 04:43:39,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:43:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:39,749 INFO L264 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-27 04:43:39,750 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:43:39,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:43:39,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:43:39,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2019-12-27 04:43:39,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247143509] [2019-12-27 04:43:39,776 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-27 04:43:39,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:43:39,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-27 04:43:39,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2019-12-27 04:43:39,777 INFO L87 Difference]: Start difference. First operand 6397 states and 20804 transitions. Second operand 7 states. [2019-12-27 04:43:39,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:43:39,862 INFO L93 Difference]: Finished difference Result 7274 states and 22654 transitions. [2019-12-27 04:43:39,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 04:43:39,863 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-12-27 04:43:39,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:43:39,886 INFO L225 Difference]: With dead ends: 7274 [2019-12-27 04:43:39,887 INFO L226 Difference]: Without dead ends: 7274 [2019-12-27 04:43:39,887 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2019-12-27 04:43:39,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7274 states. [2019-12-27 04:43:40,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7274 to 6796. [2019-12-27 04:43:40,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6796 states. [2019-12-27 04:43:40,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6796 states to 6796 states and 21344 transitions. [2019-12-27 04:43:40,120 INFO L78 Accepts]: Start accepts. Automaton has 6796 states and 21344 transitions. Word has length 17 [2019-12-27 04:43:40,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:43:40,120 INFO L462 AbstractCegarLoop]: Abstraction has 6796 states and 21344 transitions. [2019-12-27 04:43:40,120 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-27 04:43:40,120 INFO L276 IsEmpty]: Start isEmpty. Operand 6796 states and 21344 transitions. [2019-12-27 04:43:40,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-27 04:43:40,121 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:43:40,122 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:43:40,326 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:43:40,326 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:43:40,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:43:40,326 INFO L82 PathProgramCache]: Analyzing trace with hash 138877152, now seen corresponding path program 1 times [2019-12-27 04:43:40,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:43:40,327 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552088531] [2019-12-27 04:43:40,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:43:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:40,376 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-12-27 04:43:40,377 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552088531] [2019-12-27 04:43:40,377 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652838015] [2019-12-27 04:43:40,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:43:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:41,012 INFO L264 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-27 04:43:41,014 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:43:41,045 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-27 04:43:41,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:43:41,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2019-12-27 04:43:41,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963883510] [2019-12-27 04:43:41,046 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-27 04:43:41,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:43:41,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-27 04:43:41,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2019-12-27 04:43:41,047 INFO L87 Difference]: Start difference. First operand 6796 states and 21344 transitions. Second operand 9 states. [2019-12-27 04:43:41,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:43:41,133 INFO L93 Difference]: Finished difference Result 6941 states and 21009 transitions. [2019-12-27 04:43:41,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 04:43:41,134 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2019-12-27 04:43:41,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:43:41,154 INFO L225 Difference]: With dead ends: 6941 [2019-12-27 04:43:41,154 INFO L226 Difference]: Without dead ends: 6941 [2019-12-27 04:43:41,155 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2019-12-27 04:43:41,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6941 states. [2019-12-27 04:43:41,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6941 to 6623. [2019-12-27 04:43:41,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6623 states. [2019-12-27 04:43:41,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6623 states to 6623 states and 20272 transitions. [2019-12-27 04:43:41,361 INFO L78 Accepts]: Start accepts. Automaton has 6623 states and 20272 transitions. Word has length 30 [2019-12-27 04:43:41,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:43:41,361 INFO L462 AbstractCegarLoop]: Abstraction has 6623 states and 20272 transitions. [2019-12-27 04:43:41,361 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-27 04:43:41,361 INFO L276 IsEmpty]: Start isEmpty. Operand 6623 states and 20272 transitions. [2019-12-27 04:43:41,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-12-27 04:43:41,367 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:43:41,367 INFO L411 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:43:41,571 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:43:41,572 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:43:41,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:43:41,572 INFO L82 PathProgramCache]: Analyzing trace with hash 741042800, now seen corresponding path program 1 times [2019-12-27 04:43:41,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:43:41,572 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910386405] [2019-12-27 04:43:41,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:43:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 04:43:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 04:43:41,633 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-27 04:43:41,633 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-27 04:43:41,633 WARN L364 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-27 04:43:41,634 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2019-12-27 04:43:41,642 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,642 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,642 WARN L315 ript$VariableManager]: TermVariabe threadThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,642 WARN L315 ript$VariableManager]: TermVariabe threadThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,643 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,643 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,643 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,643 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,643 WARN L315 ript$VariableManager]: TermVariabe threadThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,643 WARN L315 ript$VariableManager]: TermVariabe threadThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,644 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,644 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,644 WARN L315 ript$VariableManager]: TermVariabe |threadThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,644 WARN L315 ript$VariableManager]: TermVariabe |threadThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,644 WARN L315 ript$VariableManager]: TermVariabe threadThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,644 WARN L315 ript$VariableManager]: TermVariabe threadThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,644 WARN L315 ript$VariableManager]: TermVariabe |threadThread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,644 WARN L315 ript$VariableManager]: TermVariabe |threadThread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,645 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,645 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,645 WARN L315 ript$VariableManager]: TermVariabe threadThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,645 WARN L315 ript$VariableManager]: TermVariabe threadThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,645 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,645 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,645 WARN L315 ript$VariableManager]: TermVariabe |threadThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,646 WARN L315 ript$VariableManager]: TermVariabe |threadThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,646 WARN L315 ript$VariableManager]: TermVariabe threadThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,646 WARN L315 ript$VariableManager]: TermVariabe threadThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,646 WARN L315 ript$VariableManager]: TermVariabe |threadThread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,646 WARN L315 ript$VariableManager]: TermVariabe |threadThread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,646 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,646 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,646 WARN L315 ript$VariableManager]: TermVariabe threadThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,647 WARN L315 ript$VariableManager]: TermVariabe threadThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,647 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,647 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,647 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,647 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,647 WARN L315 ript$VariableManager]: TermVariabe threadThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,647 WARN L315 ript$VariableManager]: TermVariabe threadThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,648 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,648 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,648 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,648 WARN L315 ript$VariableManager]: TermVariabe threadThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,648 WARN L315 ript$VariableManager]: TermVariabe threadThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,649 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,650 WARN L315 ript$VariableManager]: TermVariabe threadThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,650 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,650 WARN L315 ript$VariableManager]: TermVariabe threadThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,650 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,652 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,652 WARN L315 ript$VariableManager]: TermVariabe threadThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,652 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,652 WARN L315 ript$VariableManager]: TermVariabe threadThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,653 WARN L315 ript$VariableManager]: TermVariabe threadThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,654 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,654 WARN L315 ript$VariableManager]: TermVariabe threadThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,654 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,655 WARN L315 ript$VariableManager]: TermVariabe threadThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,655 WARN L315 ript$VariableManager]: TermVariabe threadThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,656 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,656 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,657 WARN L315 ript$VariableManager]: TermVariabe |threadThread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,657 WARN L315 ript$VariableManager]: TermVariabe threadThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,657 WARN L315 ript$VariableManager]: TermVariabe |threadThread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,658 WARN L315 ript$VariableManager]: TermVariabe threadThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,659 WARN L315 ript$VariableManager]: TermVariabe |threadThread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,659 WARN L315 ript$VariableManager]: TermVariabe threadThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,659 WARN L315 ript$VariableManager]: TermVariabe |threadThread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,659 WARN L315 ript$VariableManager]: TermVariabe threadThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:41,665 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-27 04:43:41,666 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 04:43:41,666 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 04:43:41,666 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 04:43:41,666 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 04:43:41,666 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 04:43:41,666 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 04:43:41,667 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 04:43:41,667 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 04:43:41,668 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 110 transitions [2019-12-27 04:43:41,668 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 113 places, 110 transitions [2019-12-27 04:43:43,204 INFO L132 PetriNetUnfolder]: 848/4830 cut-off events. [2019-12-27 04:43:43,204 INFO L133 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2019-12-27 04:43:43,251 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5328 conditions, 4830 events. 848/4830 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 39222 event pairs. 0/4046 useless extension candidates. Maximal degree in co-relation 2661. Up to 448 conditions per place. [2019-12-27 04:43:43,392 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 113 places, 110 transitions [2019-12-27 04:43:44,629 INFO L132 PetriNetUnfolder]: 848/4830 cut-off events. [2019-12-27 04:43:44,629 INFO L133 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2019-12-27 04:43:44,677 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5328 conditions, 4830 events. 848/4830 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 39222 event pairs. 0/4046 useless extension candidates. Maximal degree in co-relation 2661. Up to 448 conditions per place. [2019-12-27 04:43:44,889 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3864 [2019-12-27 04:43:44,890 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 04:43:46,143 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2019-12-27 04:43:46,563 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2019-12-27 04:43:46,860 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2019-12-27 04:43:46,971 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2019-12-27 04:43:47,004 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3195 [2019-12-27 04:43:47,004 INFO L214 etLargeBlockEncoding]: Total number of compositions: 78 [2019-12-27 04:43:47,004 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 37 transitions [2019-12-27 04:43:48,102 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18897 states. [2019-12-27 04:43:48,103 INFO L276 IsEmpty]: Start isEmpty. Operand 18897 states. [2019-12-27 04:43:48,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-27 04:43:48,103 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:43:48,103 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-27 04:43:48,103 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:43:48,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:43:48,104 INFO L82 PathProgramCache]: Analyzing trace with hash 40994171, now seen corresponding path program 1 times [2019-12-27 04:43:48,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:43:48,104 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241868597] [2019-12-27 04:43:48,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:43:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:48,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:43:48,137 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241868597] [2019-12-27 04:43:48,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:43:48,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 04:43:48,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153849995] [2019-12-27 04:43:48,138 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 04:43:48,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:43:48,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 04:43:48,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:43:48,138 INFO L87 Difference]: Start difference. First operand 18897 states. Second operand 4 states. [2019-12-27 04:43:48,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:43:48,280 INFO L93 Difference]: Finished difference Result 21592 states and 77556 transitions. [2019-12-27 04:43:48,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 04:43:48,280 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-12-27 04:43:48,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:43:48,339 INFO L225 Difference]: With dead ends: 21592 [2019-12-27 04:43:48,339 INFO L226 Difference]: Without dead ends: 19531 [2019-12-27 04:43:48,339 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:43:48,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19531 states. [2019-12-27 04:43:48,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19531 to 18637. [2019-12-27 04:43:48,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18637 states. [2019-12-27 04:43:49,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18637 states to 18637 states and 67705 transitions. [2019-12-27 04:43:49,014 INFO L78 Accepts]: Start accepts. Automaton has 18637 states and 67705 transitions. Word has length 4 [2019-12-27 04:43:49,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:43:49,014 INFO L462 AbstractCegarLoop]: Abstraction has 18637 states and 67705 transitions. [2019-12-27 04:43:49,014 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 04:43:49,015 INFO L276 IsEmpty]: Start isEmpty. Operand 18637 states and 67705 transitions. [2019-12-27 04:43:49,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-27 04:43:49,015 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:43:49,015 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:43:49,015 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:43:49,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:43:49,016 INFO L82 PathProgramCache]: Analyzing trace with hash 71145926, now seen corresponding path program 1 times [2019-12-27 04:43:49,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:43:49,016 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986059319] [2019-12-27 04:43:49,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:43:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:49,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:43:49,850 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986059319] [2019-12-27 04:43:49,850 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316235724] [2019-12-27 04:43:49,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:43:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:49,928 INFO L264 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-27 04:43:49,929 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:43:49,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:43:49,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:43:49,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2019-12-27 04:43:49,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307076269] [2019-12-27 04:43:49,955 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-27 04:43:49,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:43:49,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-27 04:43:49,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2019-12-27 04:43:49,956 INFO L87 Difference]: Start difference. First operand 18637 states and 67705 transitions. Second operand 7 states. [2019-12-27 04:43:50,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:43:50,107 INFO L93 Difference]: Finished difference Result 21452 states and 75330 transitions. [2019-12-27 04:43:50,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 04:43:50,108 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-12-27 04:43:50,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:43:50,162 INFO L225 Difference]: With dead ends: 21452 [2019-12-27 04:43:50,162 INFO L226 Difference]: Without dead ends: 21452 [2019-12-27 04:43:50,163 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2019-12-27 04:43:50,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21452 states. [2019-12-27 04:43:50,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21452 to 20110. [2019-12-27 04:43:50,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20110 states. [2019-12-27 04:43:50,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20110 states to 20110 states and 70948 transitions. [2019-12-27 04:43:50,856 INFO L78 Accepts]: Start accepts. Automaton has 20110 states and 70948 transitions. Word has length 17 [2019-12-27 04:43:50,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:43:50,857 INFO L462 AbstractCegarLoop]: Abstraction has 20110 states and 70948 transitions. [2019-12-27 04:43:50,857 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-27 04:43:50,857 INFO L276 IsEmpty]: Start isEmpty. Operand 20110 states and 70948 transitions. [2019-12-27 04:43:50,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-27 04:43:50,858 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:43:50,858 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:43:51,062 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:43:51,062 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:43:51,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:43:51,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1524488795, now seen corresponding path program 1 times [2019-12-27 04:43:51,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:43:51,063 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915021638] [2019-12-27 04:43:51,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:43:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:51,131 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-12-27 04:43:51,131 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915021638] [2019-12-27 04:43:51,132 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72285285] [2019-12-27 04:43:51,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:43:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:51,228 INFO L264 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-27 04:43:51,229 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:43:51,266 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-27 04:43:51,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:43:51,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2019-12-27 04:43:51,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709266016] [2019-12-27 04:43:51,267 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-27 04:43:51,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:43:51,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-27 04:43:51,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2019-12-27 04:43:51,268 INFO L87 Difference]: Start difference. First operand 20110 states and 70948 transitions. Second operand 9 states. [2019-12-27 04:43:51,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:43:51,422 INFO L93 Difference]: Finished difference Result 21137 states and 71956 transitions. [2019-12-27 04:43:51,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 04:43:51,422 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2019-12-27 04:43:51,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:43:51,458 INFO L225 Difference]: With dead ends: 21137 [2019-12-27 04:43:51,458 INFO L226 Difference]: Without dead ends: 21137 [2019-12-27 04:43:51,459 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2019-12-27 04:43:51,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21137 states. [2019-12-27 04:43:52,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21137 to 20019. [2019-12-27 04:43:52,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20019 states. [2019-12-27 04:43:52,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20019 states to 20019 states and 68739 transitions. [2019-12-27 04:43:52,179 INFO L78 Accepts]: Start accepts. Automaton has 20019 states and 68739 transitions. Word has length 30 [2019-12-27 04:43:52,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:43:52,180 INFO L462 AbstractCegarLoop]: Abstraction has 20019 states and 68739 transitions. [2019-12-27 04:43:52,180 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-27 04:43:52,180 INFO L276 IsEmpty]: Start isEmpty. Operand 20019 states and 68739 transitions. [2019-12-27 04:43:52,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-12-27 04:43:52,185 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:43:52,185 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:43:52,388 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:43:52,389 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:43:52,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:43:52,389 INFO L82 PathProgramCache]: Analyzing trace with hash 143720568, now seen corresponding path program 1 times [2019-12-27 04:43:52,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:43:52,389 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972483579] [2019-12-27 04:43:52,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:43:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:52,461 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-12-27 04:43:52,462 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972483579] [2019-12-27 04:43:52,462 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312778633] [2019-12-27 04:43:52,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:43:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:43:52,561 INFO L264 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-27 04:43:52,562 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:43:52,615 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-12-27 04:43:52,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:43:52,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2019-12-27 04:43:52,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153060256] [2019-12-27 04:43:52,616 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-27 04:43:52,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:43:52,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-27 04:43:52,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2019-12-27 04:43:52,617 INFO L87 Difference]: Start difference. First operand 20019 states and 68739 transitions. Second operand 11 states. [2019-12-27 04:43:52,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:43:52,759 INFO L93 Difference]: Finished difference Result 19366 states and 65474 transitions. [2019-12-27 04:43:52,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-27 04:43:52,760 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2019-12-27 04:43:52,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:43:52,792 INFO L225 Difference]: With dead ends: 19366 [2019-12-27 04:43:52,792 INFO L226 Difference]: Without dead ends: 19366 [2019-12-27 04:43:52,792 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2019-12-27 04:43:52,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19366 states. [2019-12-27 04:43:53,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19366 to 18808. [2019-12-27 04:43:53,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18808 states. [2019-12-27 04:43:53,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18808 states to 18808 states and 64142 transitions. [2019-12-27 04:43:53,376 INFO L78 Accepts]: Start accepts. Automaton has 18808 states and 64142 transitions. Word has length 43 [2019-12-27 04:43:53,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:43:53,376 INFO L462 AbstractCegarLoop]: Abstraction has 18808 states and 64142 transitions. [2019-12-27 04:43:53,376 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-27 04:43:53,376 INFO L276 IsEmpty]: Start isEmpty. Operand 18808 states and 64142 transitions. [2019-12-27 04:43:53,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-12-27 04:43:53,385 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:43:53,385 INFO L411 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:43:53,589 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:43:53,589 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:43:53,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:43:53,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1247564156, now seen corresponding path program 1 times [2019-12-27 04:43:53,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:43:53,590 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843197488] [2019-12-27 04:43:53,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:43:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 04:43:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 04:43:53,651 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-27 04:43:53,651 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-27 04:43:53,652 WARN L364 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-27 04:43:53,652 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2019-12-27 04:43:53,669 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,669 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,669 WARN L315 ript$VariableManager]: TermVariabe threadThread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,670 WARN L315 ript$VariableManager]: TermVariabe threadThread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,670 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,670 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,670 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,670 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,670 WARN L315 ript$VariableManager]: TermVariabe threadThread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,670 WARN L315 ript$VariableManager]: TermVariabe threadThread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,671 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,671 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,671 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,671 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,671 WARN L315 ript$VariableManager]: TermVariabe threadThread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,671 WARN L315 ript$VariableManager]: TermVariabe threadThread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,671 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,672 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,672 WARN L315 ript$VariableManager]: TermVariabe |threadThread7of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,672 WARN L315 ript$VariableManager]: TermVariabe |threadThread7of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,672 WARN L315 ript$VariableManager]: TermVariabe threadThread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,672 WARN L315 ript$VariableManager]: TermVariabe threadThread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,672 WARN L315 ript$VariableManager]: TermVariabe |threadThread7of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,672 WARN L315 ript$VariableManager]: TermVariabe |threadThread7of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,673 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,673 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,673 WARN L315 ript$VariableManager]: TermVariabe threadThread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,673 WARN L315 ript$VariableManager]: TermVariabe threadThread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,673 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,673 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,673 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,674 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,674 WARN L315 ript$VariableManager]: TermVariabe threadThread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,674 WARN L315 ript$VariableManager]: TermVariabe threadThread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,674 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,675 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,676 WARN L315 ript$VariableManager]: TermVariabe |threadThread6of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,676 WARN L315 ript$VariableManager]: TermVariabe |threadThread6of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,676 WARN L315 ript$VariableManager]: TermVariabe threadThread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,676 WARN L315 ript$VariableManager]: TermVariabe threadThread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,676 WARN L315 ript$VariableManager]: TermVariabe |threadThread6of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,676 WARN L315 ript$VariableManager]: TermVariabe |threadThread6of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,677 WARN L315 ript$VariableManager]: TermVariabe |threadThread8of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,677 WARN L315 ript$VariableManager]: TermVariabe |threadThread8of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,677 WARN L315 ript$VariableManager]: TermVariabe threadThread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,677 WARN L315 ript$VariableManager]: TermVariabe threadThread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,677 WARN L315 ript$VariableManager]: TermVariabe |threadThread8of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,677 WARN L315 ript$VariableManager]: TermVariabe |threadThread8of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,678 WARN L315 ript$VariableManager]: TermVariabe threadThread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,678 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,678 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,678 WARN L315 ript$VariableManager]: TermVariabe threadThread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,679 WARN L315 ript$VariableManager]: TermVariabe threadThread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,680 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,680 WARN L315 ript$VariableManager]: TermVariabe threadThread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,680 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,681 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,681 WARN L315 ript$VariableManager]: TermVariabe threadThread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,681 WARN L315 ript$VariableManager]: TermVariabe threadThread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,681 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,683 WARN L315 ript$VariableManager]: TermVariabe threadThread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,683 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,683 WARN L315 ript$VariableManager]: TermVariabe threadThread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,683 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,684 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,685 WARN L315 ript$VariableManager]: TermVariabe threadThread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,685 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,685 WARN L315 ript$VariableManager]: TermVariabe threadThread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,686 WARN L315 ript$VariableManager]: TermVariabe |threadThread6of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,686 WARN L315 ript$VariableManager]: TermVariabe threadThread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,686 WARN L315 ript$VariableManager]: TermVariabe |threadThread6of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,687 WARN L315 ript$VariableManager]: TermVariabe threadThread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,688 WARN L315 ript$VariableManager]: TermVariabe |threadThread7of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,688 WARN L315 ript$VariableManager]: TermVariabe threadThread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,688 WARN L315 ript$VariableManager]: TermVariabe |threadThread7of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,688 WARN L315 ript$VariableManager]: TermVariabe threadThread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,689 WARN L315 ript$VariableManager]: TermVariabe |threadThread8of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,689 WARN L315 ript$VariableManager]: TermVariabe threadThread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,690 WARN L315 ript$VariableManager]: TermVariabe |threadThread8of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,690 WARN L315 ript$VariableManager]: TermVariabe threadThread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:43:53,697 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-27 04:43:53,697 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 04:43:53,697 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 04:43:53,697 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 04:43:53,697 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 04:43:53,698 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 04:43:53,698 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 04:43:53,698 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 04:43:53,698 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 04:43:53,699 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 116 transitions [2019-12-27 04:43:53,699 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 120 places, 116 transitions [2019-12-27 04:43:56,687 INFO L132 PetriNetUnfolder]: 1810/9649 cut-off events. [2019-12-27 04:43:56,687 INFO L133 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2019-12-27 04:43:56,741 INFO L76 FinitePrefix]: Finished finitePrefix Result has 10734 conditions, 9649 events. 1810/9649 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 92296 event pairs. 0/8095 useless extension candidates. Maximal degree in co-relation 5313. Up to 1024 conditions per place. [2019-12-27 04:43:56,883 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 120 places, 116 transitions [2019-12-27 04:43:59,803 INFO L132 PetriNetUnfolder]: 1810/9649 cut-off events. [2019-12-27 04:43:59,803 INFO L133 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2019-12-27 04:43:59,860 INFO L76 FinitePrefix]: Finished finitePrefix Result has 10734 conditions, 9649 events. 1810/9649 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 92296 event pairs. 0/8095 useless extension candidates. Maximal degree in co-relation 5313. Up to 1024 conditions per place. [2019-12-27 04:44:00,006 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4640 [2019-12-27 04:44:00,007 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 04:44:01,902 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2019-12-27 04:44:02,192 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2019-12-27 04:44:02,286 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3778 [2019-12-27 04:44:02,286 INFO L214 etLargeBlockEncoding]: Total number of compositions: 81 [2019-12-27 04:44:02,286 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 40 transitions [2019-12-27 04:44:08,168 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 55297 states. [2019-12-27 04:44:08,169 INFO L276 IsEmpty]: Start isEmpty. Operand 55297 states. [2019-12-27 04:44:08,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-27 04:44:08,169 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:44:08,169 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-27 04:44:08,169 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:44:08,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:44:08,170 INFO L82 PathProgramCache]: Analyzing trace with hash 47396195, now seen corresponding path program 1 times [2019-12-27 04:44:08,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:44:08,170 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349764738] [2019-12-27 04:44:08,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:44:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:44:08,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:44:08,190 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349764738] [2019-12-27 04:44:08,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:44:08,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 04:44:08,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844267946] [2019-12-27 04:44:08,191 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 04:44:08,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:44:08,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 04:44:08,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:44:08,192 INFO L87 Difference]: Start difference. First operand 55297 states. Second operand 4 states. [2019-12-27 04:44:09,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:44:09,541 INFO L93 Difference]: Finished difference Result 63134 states and 250644 transitions. [2019-12-27 04:44:09,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 04:44:09,541 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-12-27 04:44:09,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:44:09,689 INFO L225 Difference]: With dead ends: 63134 [2019-12-27 04:44:09,689 INFO L226 Difference]: Without dead ends: 56827 [2019-12-27 04:44:09,689 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:44:10,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56827 states. [2019-12-27 04:44:11,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56827 to 54781. [2019-12-27 04:44:11,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54781 states. [2019-12-27 04:44:13,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54781 states to 54781 states and 219674 transitions. [2019-12-27 04:44:13,658 INFO L78 Accepts]: Start accepts. Automaton has 54781 states and 219674 transitions. Word has length 4 [2019-12-27 04:44:13,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:44:13,658 INFO L462 AbstractCegarLoop]: Abstraction has 54781 states and 219674 transitions. [2019-12-27 04:44:13,658 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 04:44:13,658 INFO L276 IsEmpty]: Start isEmpty. Operand 54781 states and 219674 transitions. [2019-12-27 04:44:13,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-27 04:44:13,659 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:44:13,659 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:44:13,659 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:44:13,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:44:13,659 INFO L82 PathProgramCache]: Analyzing trace with hash 686766067, now seen corresponding path program 1 times [2019-12-27 04:44:13,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:44:13,659 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972723965] [2019-12-27 04:44:13,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:44:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:44:13,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:44:13,690 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972723965] [2019-12-27 04:44:13,690 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625944538] [2019-12-27 04:44:13,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:44:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:44:13,778 INFO L264 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-27 04:44:13,778 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:44:13,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:44:13,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:44:13,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2019-12-27 04:44:13,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414754171] [2019-12-27 04:44:13,800 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-27 04:44:13,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:44:13,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-27 04:44:13,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2019-12-27 04:44:13,800 INFO L87 Difference]: Start difference. First operand 54781 states and 219674 transitions. Second operand 7 states. [2019-12-27 04:44:14,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:44:14,094 INFO L93 Difference]: Finished difference Result 63378 states and 247554 transitions. [2019-12-27 04:44:14,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 04:44:14,095 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-12-27 04:44:14,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:44:14,239 INFO L225 Difference]: With dead ends: 63378 [2019-12-27 04:44:14,239 INFO L226 Difference]: Without dead ends: 63378 [2019-12-27 04:44:14,240 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2019-12-27 04:44:14,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63378 states. [2019-12-27 04:44:16,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63378 to 59796. [2019-12-27 04:44:16,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59796 states. [2019-12-27 04:44:16,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59796 states to 59796 states and 233988 transitions. [2019-12-27 04:44:16,572 INFO L78 Accepts]: Start accepts. Automaton has 59796 states and 233988 transitions. Word has length 17 [2019-12-27 04:44:16,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:44:16,572 INFO L462 AbstractCegarLoop]: Abstraction has 59796 states and 233988 transitions. [2019-12-27 04:44:16,572 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-27 04:44:16,572 INFO L276 IsEmpty]: Start isEmpty. Operand 59796 states and 233988 transitions. [2019-12-27 04:44:16,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-27 04:44:16,573 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:44:16,573 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:44:16,775 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:44:16,775 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:44:16,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:44:16,776 INFO L82 PathProgramCache]: Analyzing trace with hash 647670942, now seen corresponding path program 1 times [2019-12-27 04:44:16,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:44:16,777 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573183950] [2019-12-27 04:44:16,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:44:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:44:16,826 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-12-27 04:44:16,826 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573183950] [2019-12-27 04:44:16,827 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386684217] [2019-12-27 04:44:16,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:44:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:44:16,915 INFO L264 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-27 04:44:16,916 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:44:16,953 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-27 04:44:16,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:44:16,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2019-12-27 04:44:16,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663374692] [2019-12-27 04:44:16,954 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-27 04:44:16,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:44:16,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-27 04:44:16,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2019-12-27 04:44:16,955 INFO L87 Difference]: Start difference. First operand 59796 states and 233988 transitions. Second operand 9 states. [2019-12-27 04:44:17,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:44:17,293 INFO L93 Difference]: Finished difference Result 64269 states and 243651 transitions. [2019-12-27 04:44:17,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 04:44:17,294 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2019-12-27 04:44:17,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:44:17,441 INFO L225 Difference]: With dead ends: 64269 [2019-12-27 04:44:17,442 INFO L226 Difference]: Without dead ends: 64269 [2019-12-27 04:44:17,442 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2019-12-27 04:44:18,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64269 states. [2019-12-27 04:44:21,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64269 to 60687. [2019-12-27 04:44:21,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60687 states. [2019-12-27 04:44:21,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60687 states to 60687 states and 231362 transitions. [2019-12-27 04:44:21,897 INFO L78 Accepts]: Start accepts. Automaton has 60687 states and 231362 transitions. Word has length 30 [2019-12-27 04:44:21,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:44:21,897 INFO L462 AbstractCegarLoop]: Abstraction has 60687 states and 231362 transitions. [2019-12-27 04:44:21,897 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-27 04:44:21,897 INFO L276 IsEmpty]: Start isEmpty. Operand 60687 states and 231362 transitions. [2019-12-27 04:44:21,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-12-27 04:44:21,902 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:44:21,902 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:44:22,105 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:44:22,105 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:44:22,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:44:22,106 INFO L82 PathProgramCache]: Analyzing trace with hash 65969370, now seen corresponding path program 1 times [2019-12-27 04:44:22,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:44:22,107 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105250629] [2019-12-27 04:44:22,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:44:22,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:44:22,163 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-12-27 04:44:22,164 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105250629] [2019-12-27 04:44:22,164 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440006495] [2019-12-27 04:44:22,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:44:22,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:44:22,261 INFO L264 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-27 04:44:22,263 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:44:22,311 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-12-27 04:44:22,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:44:22,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2019-12-27 04:44:22,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340355488] [2019-12-27 04:44:22,312 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-27 04:44:22,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:44:22,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-27 04:44:22,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2019-12-27 04:44:22,313 INFO L87 Difference]: Start difference. First operand 60687 states and 231362 transitions. Second operand 11 states. [2019-12-27 04:44:22,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:44:22,615 INFO L93 Difference]: Finished difference Result 59896 states and 223816 transitions. [2019-12-27 04:44:22,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-27 04:44:22,615 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2019-12-27 04:44:22,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:44:22,730 INFO L225 Difference]: With dead ends: 59896 [2019-12-27 04:44:22,730 INFO L226 Difference]: Without dead ends: 59896 [2019-12-27 04:44:22,730 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2019-12-27 04:44:23,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59896 states. [2019-12-27 04:44:24,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59896 to 57658. [2019-12-27 04:44:24,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57658 states. [2019-12-27 04:44:24,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57658 states to 57658 states and 217164 transitions. [2019-12-27 04:44:24,666 INFO L78 Accepts]: Start accepts. Automaton has 57658 states and 217164 transitions. Word has length 43 [2019-12-27 04:44:24,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:44:24,666 INFO L462 AbstractCegarLoop]: Abstraction has 57658 states and 217164 transitions. [2019-12-27 04:44:24,666 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-27 04:44:24,666 INFO L276 IsEmpty]: Start isEmpty. Operand 57658 states and 217164 transitions. [2019-12-27 04:44:24,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-12-27 04:44:24,679 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:44:24,679 INFO L411 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:44:24,880 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:44:24,880 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:44:24,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:44:24,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1631424205, now seen corresponding path program 1 times [2019-12-27 04:44:24,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:44:24,881 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427134322] [2019-12-27 04:44:24,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:44:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 04:44:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-27 04:44:24,941 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-27 04:44:24,941 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-27 04:44:24,941 WARN L364 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-27 04:44:24,941 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2019-12-27 04:44:24,952 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,952 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,953 WARN L315 ript$VariableManager]: TermVariabe threadThread2of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,953 WARN L315 ript$VariableManager]: TermVariabe threadThread2of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,953 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,953 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,953 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,953 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,953 WARN L315 ript$VariableManager]: TermVariabe threadThread3of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,954 WARN L315 ript$VariableManager]: TermVariabe threadThread3of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,954 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,954 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,954 WARN L315 ript$VariableManager]: TermVariabe |threadThread9of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,954 WARN L315 ript$VariableManager]: TermVariabe |threadThread9of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,954 WARN L315 ript$VariableManager]: TermVariabe threadThread9of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,954 WARN L315 ript$VariableManager]: TermVariabe threadThread9of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,955 WARN L315 ript$VariableManager]: TermVariabe |threadThread9of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,955 WARN L315 ript$VariableManager]: TermVariabe |threadThread9of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,955 WARN L315 ript$VariableManager]: TermVariabe |threadThread8of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,955 WARN L315 ript$VariableManager]: TermVariabe |threadThread8of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,955 WARN L315 ript$VariableManager]: TermVariabe threadThread8of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,955 WARN L315 ript$VariableManager]: TermVariabe threadThread8of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,955 WARN L315 ript$VariableManager]: TermVariabe |threadThread8of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,956 WARN L315 ript$VariableManager]: TermVariabe |threadThread8of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,956 WARN L315 ript$VariableManager]: TermVariabe |threadThread7of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,956 WARN L315 ript$VariableManager]: TermVariabe |threadThread7of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,956 WARN L315 ript$VariableManager]: TermVariabe threadThread7of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,956 WARN L315 ript$VariableManager]: TermVariabe threadThread7of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,956 WARN L315 ript$VariableManager]: TermVariabe |threadThread7of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,956 WARN L315 ript$VariableManager]: TermVariabe |threadThread7of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,957 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,957 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,957 WARN L315 ript$VariableManager]: TermVariabe threadThread5of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,957 WARN L315 ript$VariableManager]: TermVariabe threadThread5of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,957 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,957 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,957 WARN L315 ript$VariableManager]: TermVariabe |threadThread6of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,958 WARN L315 ript$VariableManager]: TermVariabe |threadThread6of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,958 WARN L315 ript$VariableManager]: TermVariabe threadThread6of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,958 WARN L315 ript$VariableManager]: TermVariabe threadThread6of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,958 WARN L315 ript$VariableManager]: TermVariabe |threadThread6of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,958 WARN L315 ript$VariableManager]: TermVariabe |threadThread6of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,958 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,958 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,959 WARN L315 ript$VariableManager]: TermVariabe threadThread1of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,959 WARN L315 ript$VariableManager]: TermVariabe threadThread1of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,959 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,959 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,959 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,959 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,959 WARN L315 ript$VariableManager]: TermVariabe threadThread4of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,959 WARN L315 ript$VariableManager]: TermVariabe threadThread4of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,960 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,960 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,960 WARN L315 ript$VariableManager]: TermVariabe threadThread1of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,960 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,960 WARN L315 ript$VariableManager]: TermVariabe threadThread1of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,961 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,962 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,962 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,962 WARN L315 ript$VariableManager]: TermVariabe threadThread2of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,962 WARN L315 ript$VariableManager]: TermVariabe threadThread2of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,964 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,964 WARN L315 ript$VariableManager]: TermVariabe threadThread3of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,964 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,964 WARN L315 ript$VariableManager]: TermVariabe threadThread3of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,966 WARN L315 ript$VariableManager]: TermVariabe threadThread4of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,966 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,966 WARN L315 ript$VariableManager]: TermVariabe |threadThread4of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,966 WARN L315 ript$VariableManager]: TermVariabe threadThread4of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,968 WARN L315 ript$VariableManager]: TermVariabe threadThread5of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,968 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,968 WARN L315 ript$VariableManager]: TermVariabe |threadThread5of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,968 WARN L315 ript$VariableManager]: TermVariabe threadThread5of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,970 WARN L315 ript$VariableManager]: TermVariabe |threadThread6of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,970 WARN L315 ript$VariableManager]: TermVariabe threadThread6of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,970 WARN L315 ript$VariableManager]: TermVariabe |threadThread6of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,970 WARN L315 ript$VariableManager]: TermVariabe threadThread6of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,972 WARN L315 ript$VariableManager]: TermVariabe |threadThread7of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,972 WARN L315 ript$VariableManager]: TermVariabe threadThread7of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,972 WARN L315 ript$VariableManager]: TermVariabe |threadThread7of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,973 WARN L315 ript$VariableManager]: TermVariabe threadThread7of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,974 WARN L315 ript$VariableManager]: TermVariabe threadThread8of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,974 WARN L315 ript$VariableManager]: TermVariabe |threadThread8of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,974 WARN L315 ript$VariableManager]: TermVariabe threadThread8of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,974 WARN L315 ript$VariableManager]: TermVariabe |threadThread8of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,976 WARN L315 ript$VariableManager]: TermVariabe threadThread9of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,976 WARN L315 ript$VariableManager]: TermVariabe |threadThread9of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,976 WARN L315 ript$VariableManager]: TermVariabe threadThread9of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,976 WARN L315 ript$VariableManager]: TermVariabe |threadThread9of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:44:24,989 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-27 04:44:24,989 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 04:44:24,989 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 04:44:24,989 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 04:44:24,989 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 04:44:24,989 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 04:44:24,989 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 04:44:24,990 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 04:44:24,990 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 04:44:24,991 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 122 transitions [2019-12-27 04:44:24,991 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 127 places, 122 transitions [2019-12-27 04:44:34,238 INFO L132 PetriNetUnfolder]: 3860/19396 cut-off events. [2019-12-27 04:44:34,238 INFO L133 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2019-12-27 04:44:34,379 INFO L76 FinitePrefix]: Finished finitePrefix Result has 21773 conditions, 19396 events. 3860/19396 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 212691 event pairs. 0/16304 useless extension candidates. Maximal degree in co-relation 10719. Up to 2304 conditions per place. [2019-12-27 04:44:34,706 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 127 places, 122 transitions [2019-12-27 04:44:42,271 INFO L132 PetriNetUnfolder]: 3860/19396 cut-off events. [2019-12-27 04:44:42,271 INFO L133 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2019-12-27 04:44:42,434 INFO L76 FinitePrefix]: Finished finitePrefix Result has 21773 conditions, 19396 events. 3860/19396 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 212691 event pairs. 0/16304 useless extension candidates. Maximal degree in co-relation 10719. Up to 2304 conditions per place. [2019-12-27 04:44:42,828 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 5472 [2019-12-27 04:44:42,828 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 04:44:44,701 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2019-12-27 04:44:45,054 WARN L192 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2019-12-27 04:44:45,213 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4435 [2019-12-27 04:44:45,213 INFO L214 etLargeBlockEncoding]: Total number of compositions: 84 [2019-12-27 04:44:45,214 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 43 transitions [2019-12-27 04:45:26,637 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 163089 states. [2019-12-27 04:45:26,637 INFO L276 IsEmpty]: Start isEmpty. Operand 163089 states. [2019-12-27 04:45:26,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-27 04:45:26,637 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:45:26,638 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-27 04:45:26,638 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:45:26,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:45:26,638 INFO L82 PathProgramCache]: Analyzing trace with hash 54015380, now seen corresponding path program 1 times [2019-12-27 04:45:26,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:45:26,638 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427757308] [2019-12-27 04:45:26,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:45:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:45:26,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:45:26,663 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427757308] [2019-12-27 04:45:26,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:45:26,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 04:45:26,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036473681] [2019-12-27 04:45:26,664 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 04:45:26,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:45:26,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 04:45:26,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 04:45:26,665 INFO L87 Difference]: Start difference. First operand 163089 states. Second operand 3 states. [2019-12-27 04:45:27,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:45:27,454 INFO L93 Difference]: Finished difference Result 163089 states and 717318 transitions. [2019-12-27 04:45:27,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 04:45:27,454 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-27 04:45:27,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:45:27,904 INFO L225 Difference]: With dead ends: 163089 [2019-12-27 04:45:27,904 INFO L226 Difference]: Without dead ends: 143404 [2019-12-27 04:45:27,905 INFO L631 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 [2019-12-27 04:45:37,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143404 states. [2019-12-27 04:45:40,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143404 to 143404. [2019-12-27 04:45:40,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143404 states. [2019-12-27 04:45:41,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143404 states to 143404 states and 638584 transitions. [2019-12-27 04:45:41,309 INFO L78 Accepts]: Start accepts. Automaton has 143404 states and 638584 transitions. Word has length 4 [2019-12-27 04:45:41,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:45:41,309 INFO L462 AbstractCegarLoop]: Abstraction has 143404 states and 638584 transitions. [2019-12-27 04:45:41,309 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 04:45:41,309 INFO L276 IsEmpty]: Start isEmpty. Operand 143404 states and 638584 transitions. [2019-12-27 04:45:41,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-27 04:45:41,310 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:45:41,310 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:45:41,310 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:45:41,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:45:41,310 INFO L82 PathProgramCache]: Analyzing trace with hash 803576083, now seen corresponding path program 1 times [2019-12-27 04:45:41,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:45:41,310 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036715302] [2019-12-27 04:45:41,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:45:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:45:41,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-27 04:45:41,345 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036715302] [2019-12-27 04:45:41,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:45:41,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 04:45:41,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629753167] [2019-12-27 04:45:41,346 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 04:45:41,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:45:41,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 04:45:41,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:45:41,347 INFO L87 Difference]: Start difference. First operand 143404 states and 638584 transitions. Second operand 4 states. [2019-12-27 04:45:43,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:45:43,780 INFO L93 Difference]: Finished difference Result 166667 states and 731394 transitions. [2019-12-27 04:45:43,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 04:45:43,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-27 04:45:43,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:45:44,290 INFO L225 Difference]: With dead ends: 166667 [2019-12-27 04:45:44,290 INFO L226 Difference]: Without dead ends: 166667 [2019-12-27 04:45:44,290 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 04:45:56,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166667 states. [2019-12-27 04:46:00,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166667 to 162061. [2019-12-27 04:46:00,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162061 states. [2019-12-27 04:46:08,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162061 states to 162061 states and 710659 transitions. [2019-12-27 04:46:08,566 INFO L78 Accepts]: Start accepts. Automaton has 162061 states and 710659 transitions. Word has length 10 [2019-12-27 04:46:08,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:46:08,567 INFO L462 AbstractCegarLoop]: Abstraction has 162061 states and 710659 transitions. [2019-12-27 04:46:08,567 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 04:46:08,567 INFO L276 IsEmpty]: Start isEmpty. Operand 162061 states and 710659 transitions. [2019-12-27 04:46:08,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-27 04:46:08,567 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:46:08,567 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:46:08,567 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:46:08,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:46:08,568 INFO L82 PathProgramCache]: Analyzing trace with hash 416229304, now seen corresponding path program 1 times [2019-12-27 04:46:08,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:46:08,569 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220037807] [2019-12-27 04:46:08,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:46:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:46:08,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:46:08,589 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220037807] [2019-12-27 04:46:08,590 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465315703] [2019-12-27 04:46:08,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:46:08,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:46:08,679 INFO L264 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-27 04:46:08,680 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:46:08,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:46:08,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:46:08,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2019-12-27 04:46:08,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928391204] [2019-12-27 04:46:08,698 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-27 04:46:08,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:46:08,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-27 04:46:08,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-27 04:46:08,699 INFO L87 Difference]: Start difference. First operand 162061 states and 710659 transitions. Second operand 6 states. [2019-12-27 04:46:09,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:46:09,586 INFO L93 Difference]: Finished difference Result 162059 states and 710654 transitions. [2019-12-27 04:46:09,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 04:46:09,586 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-12-27 04:46:09,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:46:11,521 INFO L225 Difference]: With dead ends: 162059 [2019-12-27 04:46:11,521 INFO L226 Difference]: Without dead ends: 162059 [2019-12-27 04:46:11,521 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-27 04:46:21,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162059 states. [2019-12-27 04:46:24,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162059 to 162059. [2019-12-27 04:46:24,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162059 states. [2019-12-27 04:46:24,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162059 states to 162059 states and 710654 transitions. [2019-12-27 04:46:24,840 INFO L78 Accepts]: Start accepts. Automaton has 162059 states and 710654 transitions. Word has length 17 [2019-12-27 04:46:24,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:46:24,840 INFO L462 AbstractCegarLoop]: Abstraction has 162059 states and 710654 transitions. [2019-12-27 04:46:24,840 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-27 04:46:24,840 INFO L276 IsEmpty]: Start isEmpty. Operand 162059 states and 710654 transitions. [2019-12-27 04:46:24,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-27 04:46:24,841 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:46:24,841 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:46:25,041 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:46:25,042 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:46:25,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:46:25,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1619666280, now seen corresponding path program 1 times [2019-12-27 04:46:25,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:46:25,043 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662384158] [2019-12-27 04:46:25,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:46:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:46:25,082 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:46:25,082 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662384158] [2019-12-27 04:46:25,082 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923089895] [2019-12-27 04:46:25,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:46:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:46:25,171 INFO L264 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-27 04:46:25,172 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:46:25,202 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:46:25,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:46:25,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2019-12-27 04:46:25,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178275685] [2019-12-27 04:46:25,203 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-27 04:46:25,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:46:25,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-27 04:46:25,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-12-27 04:46:25,204 INFO L87 Difference]: Start difference. First operand 162059 states and 710654 transitions. Second operand 8 states. [2019-12-27 04:46:31,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:46:31,451 INFO L93 Difference]: Finished difference Result 162055 states and 710642 transitions. [2019-12-27 04:46:31,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 04:46:31,452 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2019-12-27 04:46:31,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:46:31,967 INFO L225 Difference]: With dead ends: 162055 [2019-12-27 04:46:31,967 INFO L226 Difference]: Without dead ends: 162055 [2019-12-27 04:46:31,968 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-12-27 04:46:36,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162055 states. [2019-12-27 04:46:39,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162055 to 162055. [2019-12-27 04:46:39,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162055 states. [2019-12-27 04:46:40,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162055 states to 162055 states and 710642 transitions. [2019-12-27 04:46:40,982 INFO L78 Accepts]: Start accepts. Automaton has 162055 states and 710642 transitions. Word has length 23 [2019-12-27 04:46:40,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:46:40,982 INFO L462 AbstractCegarLoop]: Abstraction has 162055 states and 710642 transitions. [2019-12-27 04:46:40,982 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-27 04:46:40,982 INFO L276 IsEmpty]: Start isEmpty. Operand 162055 states and 710642 transitions. [2019-12-27 04:46:40,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-12-27 04:46:40,983 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:46:40,983 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:46:41,183 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:46:41,184 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:46:41,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:46:41,184 INFO L82 PathProgramCache]: Analyzing trace with hash -2075933547, now seen corresponding path program 1 times [2019-12-27 04:46:41,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:46:41,185 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060261334] [2019-12-27 04:46:41,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:46:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:46:41,238 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:46:41,238 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060261334] [2019-12-27 04:46:41,238 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842464869] [2019-12-27 04:46:41,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:46:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:46:41,338 INFO L264 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-27 04:46:41,338 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:46:41,379 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-27 04:46:41,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:46:41,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2019-12-27 04:46:41,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686030107] [2019-12-27 04:46:41,380 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-27 04:46:41,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:46:41,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-27 04:46:41,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2019-12-27 04:46:41,381 INFO L87 Difference]: Start difference. First operand 162055 states and 710642 transitions. Second operand 10 states. [2019-12-27 04:46:42,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:46:42,330 INFO L93 Difference]: Finished difference Result 162047 states and 710614 transitions. [2019-12-27 04:46:42,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 04:46:42,331 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2019-12-27 04:46:42,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. Received shutdown request... [2019-12-27 04:46:49,585 INFO L225 Difference]: With dead ends: 162047 [2019-12-27 04:46:49,585 INFO L226 Difference]: Without dead ends: 162047 [2019-12-27 04:46:49,586 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2019-12-27 04:46:54,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162047 states. [2019-12-27 04:46:54,266 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:46:54,266 WARN L527 AbstractCegarLoop]: Verification canceled [2019-12-27 04:46:54,271 WARN L227 ceAbstractionStarter]: Timeout [2019-12-27 04:46:54,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 04:46:54 BasicIcfg [2019-12-27 04:46:54,271 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 04:46:54,273 INFO L168 Benchmark]: Toolchain (without parser) took 219239.94 ms. Allocated memory was 137.4 MB in the beginning and 4.2 GB in the end (delta: 4.1 GB). Free memory was 99.5 MB in the beginning and 2.3 GB in the end (delta: -2.2 GB). Peak memory consumption was 3.7 GB. Max. memory is 7.1 GB. [2019-12-27 04:46:54,273 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-12-27 04:46:54,274 INFO L168 Benchmark]: CACSL2BoogieTranslator took 951.91 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 99.2 MB in the beginning and 118.7 MB in the end (delta: -19.4 MB). Peak memory consumption was 49.8 MB. Max. memory is 7.1 GB. [2019-12-27 04:46:54,274 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.00 ms. Allocated memory is still 201.3 MB. Free memory was 118.7 MB in the beginning and 115.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2019-12-27 04:46:54,274 INFO L168 Benchmark]: Boogie Preprocessor took 30.80 ms. Allocated memory is still 201.3 MB. Free memory was 115.9 MB in the beginning and 114.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-12-27 04:46:54,275 INFO L168 Benchmark]: RCFGBuilder took 490.26 ms. Allocated memory is still 201.3 MB. Free memory was 114.5 MB in the beginning and 89.7 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2019-12-27 04:46:54,275 INFO L168 Benchmark]: TraceAbstraction took 217703.15 ms. Allocated memory was 201.3 MB in the beginning and 4.2 GB in the end (delta: 4.0 GB). Free memory was 89.7 MB in the beginning and 2.3 GB in the end (delta: -2.2 GB). Peak memory consumption was 3.6 GB. Max. memory is 7.1 GB. [2019-12-27 04:46:54,277 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 951.91 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 99.2 MB in the beginning and 118.7 MB in the end (delta: -19.4 MB). Peak memory consumption was 49.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.00 ms. Allocated memory is still 201.3 MB. Free memory was 118.7 MB in the beginning and 115.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.80 ms. Allocated memory is still 201.3 MB. Free memory was 115.9 MB in the beginning and 114.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 490.26 ms. Allocated memory is still 201.3 MB. Free memory was 114.5 MB in the beginning and 89.7 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 217703.15 ms. Allocated memory was 201.3 MB in the beginning and 4.2 GB in the end (delta: 4.0 GB). Free memory was 89.7 MB in the beginning and 2.3 GB in the end (delta: -2.2 GB). Peak memory consumption was 3.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.2s, 71 ProgramPointsBefore, 17 ProgramPointsAfterwards, 74 TransitionsBefore, 17 TransitionsAfterwards, 344 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 4 ChoiceCompositions, 166 VarBasedMoverChecksPositive, 12 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 278 CheckedPairsTotal, 61 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 78 ProgramPointsBefore, 23 ProgramPointsAfterwards, 80 TransitionsBefore, 22 TransitionsAfterwards, 824 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 4 ChoiceCompositions, 386 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 733 CheckedPairsTotal, 62 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 85 ProgramPointsBefore, 27 ProgramPointsAfterwards, 86 TransitionsBefore, 25 TransitionsAfterwards, 1320 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 4 ChoiceCompositions, 614 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1071 CheckedPairsTotal, 67 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.2s, 92 ProgramPointsBefore, 31 ProgramPointsAfterwards, 92 TransitionsBefore, 28 TransitionsAfterwards, 1872 CoEnabledTransitionPairs, 7 FixpointIterations, 19 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 4 ChoiceCompositions, 882 VarBasedMoverChecksPositive, 15 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1448 CheckedPairsTotal, 68 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.6s, 99 ProgramPointsBefore, 35 ProgramPointsAfterwards, 98 TransitionsBefore, 31 TransitionsAfterwards, 2480 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 4 ChoiceCompositions, 1216 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2037 CheckedPairsTotal, 72 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 3.7s, 106 ProgramPointsBefore, 39 ProgramPointsAfterwards, 104 TransitionsBefore, 34 TransitionsAfterwards, 3144 CoEnabledTransitionPairs, 7 FixpointIterations, 19 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 4 ChoiceCompositions, 1476 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2554 CheckedPairsTotal, 75 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 5.3s, 113 ProgramPointsBefore, 43 ProgramPointsAfterwards, 110 TransitionsBefore, 37 TransitionsAfterwards, 3864 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 51 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 4 ChoiceCompositions, 1793 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 3195 CheckedPairsTotal, 78 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 8.5s, 120 ProgramPointsBefore, 47 ProgramPointsAfterwards, 116 TransitionsBefore, 40 TransitionsAfterwards, 4640 CoEnabledTransitionPairs, 7 FixpointIterations, 19 TrivialSequentialCompositions, 54 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 4 ChoiceCompositions, 2191 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 3778 CheckedPairsTotal, 81 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 20.2s, 127 ProgramPointsBefore, 51 ProgramPointsAfterwards, 122 TransitionsBefore, 43 TransitionsAfterwards, 5472 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 55 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 4 ChoiceCompositions, 2586 VarBasedMoverChecksPositive, 27 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 4435 CheckedPairsTotal, 84 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 1089]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1089). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 68 locations, 1 error locations. Result: TIMEOUT, OverallTime: 149.2s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 21.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 197 SDtfs, 165 SDslu, 391 SDs, 0 SdLazy, 160 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=163089occurred 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: 64.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 4606 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 152 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 13148 SizeOfPredicates, 3 NumberOfNonLiveVariables, 369 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 13/73 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown