/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:43:28,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:43:28,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:43:28,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:43:28,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:43:28,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:43:28,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:43:28,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:43:28,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:43:28,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:43:28,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:43:28,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:43:28,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:43:28,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:43:28,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:43:28,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:43:28,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:43:28,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:43:28,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:43:28,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:43:28,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:43:28,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:43:28,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:43:28,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:43:28,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 12:43:28,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:43:28,128 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:43:28,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:43:28,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:43:28,131 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:43:28,131 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:43:28,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:43:28,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:43:28,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:43:28,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:43:28,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:43:28,135 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 12:43:28,181 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:43:28,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:43:28,184 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:43:28,184 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:43:28,185 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:43:28,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:43:28,185 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:43:28,185 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:43:28,185 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:43:28,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:43:28,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:43:28,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:43:28,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:43:28,188 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:43:28,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:43:28,188 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:43:28,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:43:28,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:43:28,189 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:43:28,189 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:43:28,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:43:28,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:43:28,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:43:28,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:43:28,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:43:28,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:43:28,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:43:28,190 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 12:43:28,191 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:43:28,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:43:28,191 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 12:43:28,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:43:28,480 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:43:28,484 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:43:28,485 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:43:28,486 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:43:28,487 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i [2020-10-16 12:43:28,550 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a92f3997c/735b32e95c674ded82735ba66c15f17a/FLAG904a5e3d5 [2020-10-16 12:43:29,085 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:43:29,086 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i [2020-10-16 12:43:29,102 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a92f3997c/735b32e95c674ded82735ba66c15f17a/FLAG904a5e3d5 [2020-10-16 12:43:29,415 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a92f3997c/735b32e95c674ded82735ba66c15f17a [2020-10-16 12:43:29,425 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:43:29,427 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:43:29,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:43:29,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:43:29,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:43:29,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:43:29" (1/1) ... [2020-10-16 12:43:29,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78c3336e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:29, skipping insertion in model container [2020-10-16 12:43:29,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:43:29" (1/1) ... [2020-10-16 12:43:29,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:43:29,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:43:29,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:43:29,996 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:43:30,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:43:30,162 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:43:30,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:30 WrapperNode [2020-10-16 12:43:30,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:43:30,165 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:43:30,166 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:43:30,166 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:43:30,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:30" (1/1) ... [2020-10-16 12:43:30,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:30" (1/1) ... [2020-10-16 12:43:30,212 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:43:30,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:43:30,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:43:30,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:43:30,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:30" (1/1) ... [2020-10-16 12:43:30,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:30" (1/1) ... [2020-10-16 12:43:30,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:30" (1/1) ... [2020-10-16 12:43:30,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:30" (1/1) ... [2020-10-16 12:43:30,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:30" (1/1) ... [2020-10-16 12:43:30,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:30" (1/1) ... [2020-10-16 12:43:30,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:30" (1/1) ... [2020-10-16 12:43:30,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:43:30,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:43:30,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:43:30,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:43:30,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:43:30,310 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 12:43:30,310 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 12:43:30,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:43:30,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:43:30,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:43:30,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:43:30,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:43:30,312 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 12:43:30,606 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:43:30,607 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-16 12:43:30,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:43:30 BoogieIcfgContainer [2020-10-16 12:43:30,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:43:30,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:43:30,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:43:30,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:43:30,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:43:29" (1/3) ... [2020-10-16 12:43:30,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b732522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:43:30, skipping insertion in model container [2020-10-16 12:43:30,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:30" (2/3) ... [2020-10-16 12:43:30,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b732522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:43:30, skipping insertion in model container [2020-10-16 12:43:30,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:43:30" (3/3) ... [2020-10-16 12:43:30,618 INFO L111 eAbstractionObserver]: Analyzing ICFG 46_monabsex2_vs.i [2020-10-16 12:43:30,630 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:43:30,630 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:43:30,637 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 12:43:30,638 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:43:30,660 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:30,660 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:30,660 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:30,661 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:30,662 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:30,662 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:30,666 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:30,667 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:30,667 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:30,667 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:30,673 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:43:30,688 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-16 12:43:30,715 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:43:30,715 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:43:30,716 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:43:30,716 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 12:43:30,716 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:43:30,716 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:43:30,716 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:43:30,717 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:43:30,728 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:43:30,729 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 28 transitions, 61 flow [2020-10-16 12:43:30,731 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 28 transitions, 61 flow [2020-10-16 12:43:30,733 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 61 flow [2020-10-16 12:43:30,765 INFO L129 PetriNetUnfolder]: 3/36 cut-off events. [2020-10-16 12:43:30,765 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 12:43:30,770 INFO L80 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 36 events. 3/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 18. Up to 4 conditions per place. [2020-10-16 12:43:30,771 INFO L117 LiptonReduction]: Number of co-enabled transitions 180 [2020-10-16 12:43:31,302 INFO L132 LiptonReduction]: Checked pairs total: 146 [2020-10-16 12:43:31,302 INFO L134 LiptonReduction]: Total number of compositions: 24 [2020-10-16 12:43:31,309 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 11 places, 8 transitions, 21 flow [2020-10-16 12:43:31,318 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 19 states. [2020-10-16 12:43:31,321 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-16 12:43:31,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-16 12:43:31,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:31,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-16 12:43:31,328 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:43:31,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:31,334 INFO L82 PathProgramCache]: Analyzing trace with hash 4107967, now seen corresponding path program 1 times [2020-10-16 12:43:31,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:31,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928706142] [2020-10-16 12:43:31,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:31,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:43:31,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928706142] [2020-10-16 12:43:31,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:31,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 12:43:31,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [297968903] [2020-10-16 12:43:31,531 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:31,533 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:31,542 INFO L258 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-10-16 12:43:31,543 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:31,546 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:31,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:43:31,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:31,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:43:31,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:31,560 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-10-16 12:43:31,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:31,578 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2020-10-16 12:43:31,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:31,580 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-16 12:43:31,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:31,586 INFO L225 Difference]: With dead ends: 11 [2020-10-16 12:43:31,587 INFO L226 Difference]: Without dead ends: 11 [2020-10-16 12:43:31,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:31,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-16 12:43:31,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-16 12:43:31,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-16 12:43:31,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-10-16 12:43:31,622 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 4 [2020-10-16 12:43:31,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:31,623 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-10-16 12:43:31,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:43:31,623 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-10-16 12:43:31,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-16 12:43:31,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:31,624 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-10-16 12:43:31,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:43:31,624 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:43:31,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:31,625 INFO L82 PathProgramCache]: Analyzing trace with hash -347254361, now seen corresponding path program 1 times [2020-10-16 12:43:31,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:31,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387897181] [2020-10-16 12:43:31,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:43:31,655 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:43:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:43:31,666 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:43:31,687 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 12:43:31,688 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 12:43:31,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:43:31,690 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 12:43:31,691 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-16 12:43:31,697 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,697 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,697 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,697 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,698 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,698 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,699 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,699 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,699 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,699 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,700 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,700 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,700 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,700 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,701 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,701 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,703 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,703 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,703 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,704 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,705 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:43:31,705 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 12:43:31,706 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:43:31,706 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:43:31,706 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:43:31,706 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 12:43:31,706 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:43:31,706 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:43:31,707 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:43:31,707 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:43:31,709 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:43:31,709 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 38 transitions, 88 flow [2020-10-16 12:43:31,709 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 38 transitions, 88 flow [2020-10-16 12:43:31,709 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 40 places, 38 transitions, 88 flow [2020-10-16 12:43:31,723 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-10-16 12:43:31,723 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 12:43:31,725 INFO L80 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 55 events. 5/55 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 37. Up to 6 conditions per place. [2020-10-16 12:43:31,727 INFO L117 LiptonReduction]: Number of co-enabled transitions 540 [2020-10-16 12:43:32,107 INFO L132 LiptonReduction]: Checked pairs total: 990 [2020-10-16 12:43:32,108 INFO L134 LiptonReduction]: Total number of compositions: 30 [2020-10-16 12:43:32,108 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 44 flow [2020-10-16 12:43:32,118 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 149 states. [2020-10-16 12:43:32,118 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2020-10-16 12:43:32,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-16 12:43:32,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:32,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-16 12:43:32,120 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:32,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:32,120 INFO L82 PathProgramCache]: Analyzing trace with hash 6502175, now seen corresponding path program 1 times [2020-10-16 12:43:32,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:32,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448932753] [2020-10-16 12:43:32,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:32,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:32,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:43:32,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448932753] [2020-10-16 12:43:32,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:32,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 12:43:32,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [552316250] [2020-10-16 12:43:32,163 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:32,163 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:32,165 INFO L258 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-10-16 12:43:32,165 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:32,166 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:32,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:43:32,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:32,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:43:32,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:32,167 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 3 states. [2020-10-16 12:43:32,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:32,192 INFO L93 Difference]: Finished difference Result 87 states and 182 transitions. [2020-10-16 12:43:32,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:32,193 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-16 12:43:32,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:32,196 INFO L225 Difference]: With dead ends: 87 [2020-10-16 12:43:32,196 INFO L226 Difference]: Without dead ends: 87 [2020-10-16 12:43:32,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:32,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-16 12:43:32,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-10-16 12:43:32,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-16 12:43:32,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 182 transitions. [2020-10-16 12:43:32,212 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 182 transitions. Word has length 4 [2020-10-16 12:43:32,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:32,212 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 182 transitions. [2020-10-16 12:43:32,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:43:32,213 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 182 transitions. [2020-10-16 12:43:32,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:43:32,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:32,214 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2020-10-16 12:43:32,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 12:43:32,214 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:32,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:32,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1890616172, now seen corresponding path program 1 times [2020-10-16 12:43:32,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:32,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113060484] [2020-10-16 12:43:32,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:32,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:43:32,234 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:43:32,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:43:32,246 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:43:32,251 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 12:43:32,251 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 12:43:32,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 12:43:32,252 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 12:43:32,254 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-16 12:43:32,260 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:32,261 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:32,261 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:32,261 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:32,262 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:32,262 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:32,262 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:32,262 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:32,263 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:32,263 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:32,263 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:32,263 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:32,264 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:32,264 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:32,264 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:32,264 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:32,265 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:32,265 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:32,266 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:32,266 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:32,266 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:32,266 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:32,269 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:32,270 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:32,270 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:32,270 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:32,275 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:32,275 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:32,275 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:32,275 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:32,277 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:43:32,278 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 12:43:32,278 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:43:32,278 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:43:32,278 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:43:32,279 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 12:43:32,279 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:43:32,279 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:43:32,279 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:43:32,279 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:43:32,281 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:43:32,282 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 48 transitions, 117 flow [2020-10-16 12:43:32,282 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 48 transitions, 117 flow [2020-10-16 12:43:32,282 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 51 places, 48 transitions, 117 flow [2020-10-16 12:43:32,301 INFO L129 PetriNetUnfolder]: 7/74 cut-off events. [2020-10-16 12:43:32,301 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 12:43:32,303 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 74 events. 7/74 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 170 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 59. Up to 8 conditions per place. [2020-10-16 12:43:32,305 INFO L117 LiptonReduction]: Number of co-enabled transitions 1080 [2020-10-16 12:43:32,764 INFO L132 LiptonReduction]: Checked pairs total: 2122 [2020-10-16 12:43:32,765 INFO L134 LiptonReduction]: Total number of compositions: 38 [2020-10-16 12:43:32,765 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 22 transitions, 65 flow [2020-10-16 12:43:32,799 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 749 states. [2020-10-16 12:43:32,800 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states. [2020-10-16 12:43:32,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-16 12:43:32,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:32,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-16 12:43:32,801 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:32,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:32,801 INFO L82 PathProgramCache]: Analyzing trace with hash 9425446, now seen corresponding path program 1 times [2020-10-16 12:43:32,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:32,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753838088] [2020-10-16 12:43:32,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:32,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:43:32,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753838088] [2020-10-16 12:43:32,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:32,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 12:43:32,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [370427905] [2020-10-16 12:43:32,834 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:32,835 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:32,835 INFO L258 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-10-16 12:43:32,836 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:32,836 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:32,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:43:32,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:32,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:43:32,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:32,837 INFO L87 Difference]: Start difference. First operand 749 states. Second operand 3 states. [2020-10-16 12:43:32,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:32,878 INFO L93 Difference]: Finished difference Result 421 states and 1176 transitions. [2020-10-16 12:43:32,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:32,879 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-16 12:43:32,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:32,888 INFO L225 Difference]: With dead ends: 421 [2020-10-16 12:43:32,888 INFO L226 Difference]: Without dead ends: 421 [2020-10-16 12:43:32,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:32,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-10-16 12:43:32,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2020-10-16 12:43:32,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-10-16 12:43:32,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 1176 transitions. [2020-10-16 12:43:32,955 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 1176 transitions. Word has length 4 [2020-10-16 12:43:32,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:32,956 INFO L481 AbstractCegarLoop]: Abstraction has 421 states and 1176 transitions. [2020-10-16 12:43:32,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:43:32,956 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 1176 transitions. [2020-10-16 12:43:32,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:43:32,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:32,959 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:32,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 12:43:32,960 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:32,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:32,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1692799425, now seen corresponding path program 1 times [2020-10-16 12:43:32,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:32,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222065579] [2020-10-16 12:43:32,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:33,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:43:33,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222065579] [2020-10-16 12:43:33,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:33,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:43:33,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1898002061] [2020-10-16 12:43:33,016 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:33,017 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:33,019 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-10-16 12:43:33,020 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:33,034 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:33,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:43:33,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:33,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:43:33,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:33,035 INFO L87 Difference]: Start difference. First operand 421 states and 1176 transitions. Second operand 3 states. [2020-10-16 12:43:33,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:33,065 INFO L93 Difference]: Finished difference Result 319 states and 912 transitions. [2020-10-16 12:43:33,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:33,066 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-16 12:43:33,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:33,069 INFO L225 Difference]: With dead ends: 319 [2020-10-16 12:43:33,070 INFO L226 Difference]: Without dead ends: 319 [2020-10-16 12:43:33,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:33,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-16 12:43:33,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2020-10-16 12:43:33,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-16 12:43:33,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 912 transitions. [2020-10-16 12:43:33,093 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 912 transitions. Word has length 10 [2020-10-16 12:43:33,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:33,093 INFO L481 AbstractCegarLoop]: Abstraction has 319 states and 912 transitions. [2020-10-16 12:43:33,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:43:33,093 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 912 transitions. [2020-10-16 12:43:33,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:43:33,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:33,095 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2020-10-16 12:43:33,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 12:43:33,095 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:33,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:33,096 INFO L82 PathProgramCache]: Analyzing trace with hash 790757285, now seen corresponding path program 1 times [2020-10-16 12:43:33,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:33,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333781643] [2020-10-16 12:43:33,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:43:33,110 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:43:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:43:33,119 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:43:33,124 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 12:43:33,124 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 12:43:33,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 12:43:33,125 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 12:43:33,126 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-16 12:43:33,132 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,132 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,132 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,132 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,134 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,134 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,135 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,135 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,135 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,135 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,135 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,136 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,136 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,136 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,136 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,136 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,137 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,137 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,137 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,137 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,137 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,138 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,138 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,138 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,139 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,139 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,139 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,139 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,141 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,141 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,141 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,141 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,143 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,143 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,143 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,143 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,145 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,145 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,145 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,145 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:33,146 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:43:33,147 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 12:43:33,147 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:43:33,147 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:43:33,147 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:43:33,147 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 12:43:33,147 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:43:33,148 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:43:33,148 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:43:33,148 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:43:33,149 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:43:33,149 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 58 transitions, 148 flow [2020-10-16 12:43:33,150 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 58 transitions, 148 flow [2020-10-16 12:43:33,150 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 58 transitions, 148 flow [2020-10-16 12:43:33,165 INFO L129 PetriNetUnfolder]: 9/93 cut-off events. [2020-10-16 12:43:33,165 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 12:43:33,167 INFO L80 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 93 events. 9/93 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 217 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 83. Up to 10 conditions per place. [2020-10-16 12:43:33,170 INFO L117 LiptonReduction]: Number of co-enabled transitions 1800 [2020-10-16 12:43:33,639 INFO L132 LiptonReduction]: Checked pairs total: 4451 [2020-10-16 12:43:33,639 INFO L134 LiptonReduction]: Total number of compositions: 40 [2020-10-16 12:43:33,640 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 31 transitions, 94 flow [2020-10-16 12:43:34,246 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 7269 states. [2020-10-16 12:43:34,247 INFO L276 IsEmpty]: Start isEmpty. Operand 7269 states. [2020-10-16 12:43:34,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-16 12:43:34,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:34,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-16 12:43:34,248 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:43:34,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:34,248 INFO L82 PathProgramCache]: Analyzing trace with hash 12782696, now seen corresponding path program 1 times [2020-10-16 12:43:34,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:34,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797723159] [2020-10-16 12:43:34,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:34,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:43:34,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797723159] [2020-10-16 12:43:34,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:34,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 12:43:34,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [387708342] [2020-10-16 12:43:34,300 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:34,300 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:34,301 INFO L258 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-10-16 12:43:34,301 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:34,301 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:34,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:43:34,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:34,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:43:34,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:34,302 INFO L87 Difference]: Start difference. First operand 7269 states. Second operand 3 states. [2020-10-16 12:43:34,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:34,405 INFO L93 Difference]: Finished difference Result 4227 states and 15765 transitions. [2020-10-16 12:43:34,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:34,406 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-16 12:43:34,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:34,448 INFO L225 Difference]: With dead ends: 4227 [2020-10-16 12:43:34,449 INFO L226 Difference]: Without dead ends: 4227 [2020-10-16 12:43:34,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:34,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4227 states. [2020-10-16 12:43:34,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4227 to 4227. [2020-10-16 12:43:34,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4227 states. [2020-10-16 12:43:34,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4227 states to 4227 states and 15765 transitions. [2020-10-16 12:43:34,765 INFO L78 Accepts]: Start accepts. Automaton has 4227 states and 15765 transitions. Word has length 4 [2020-10-16 12:43:34,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:34,765 INFO L481 AbstractCegarLoop]: Abstraction has 4227 states and 15765 transitions. [2020-10-16 12:43:34,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:43:34,765 INFO L276 IsEmpty]: Start isEmpty. Operand 4227 states and 15765 transitions. [2020-10-16 12:43:34,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:43:34,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:34,766 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:34,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 12:43:34,767 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:43:34,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:34,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1357463974, now seen corresponding path program 1 times [2020-10-16 12:43:34,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:34,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125030976] [2020-10-16 12:43:34,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:34,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:43:34,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125030976] [2020-10-16 12:43:34,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:34,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:43:34,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1642061572] [2020-10-16 12:43:34,807 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:34,807 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:34,808 INFO L258 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-10-16 12:43:34,809 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:34,809 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:34,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:43:34,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:34,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:43:34,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:34,810 INFO L87 Difference]: Start difference. First operand 4227 states and 15765 transitions. Second operand 3 states. [2020-10-16 12:43:34,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:34,863 INFO L93 Difference]: Finished difference Result 1975 states and 7342 transitions. [2020-10-16 12:43:34,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:34,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-16 12:43:34,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:34,881 INFO L225 Difference]: With dead ends: 1975 [2020-10-16 12:43:34,882 INFO L226 Difference]: Without dead ends: 1975 [2020-10-16 12:43:34,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:34,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2020-10-16 12:43:34,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1975. [2020-10-16 12:43:34,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2020-10-16 12:43:34,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 7342 transitions. [2020-10-16 12:43:34,961 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 7342 transitions. Word has length 10 [2020-10-16 12:43:34,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:34,962 INFO L481 AbstractCegarLoop]: Abstraction has 1975 states and 7342 transitions. [2020-10-16 12:43:34,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:43:34,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 7342 transitions. [2020-10-16 12:43:34,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:43:34,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:34,969 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:34,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 12:43:34,970 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:43:34,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:34,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1886547670, now seen corresponding path program 1 times [2020-10-16 12:43:34,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:34,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734854768] [2020-10-16 12:43:34,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:43:34,989 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:43:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:43:34,997 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:43:35,002 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 12:43:35,002 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 12:43:35,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 12:43:35,003 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 12:43:35,004 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-16 12:43:35,010 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,011 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,011 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,011 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,011 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,011 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,012 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,012 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,012 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,012 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,012 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,013 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,013 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,013 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,013 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,013 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,013 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,014 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,014 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,014 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,014 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,014 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,015 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,015 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,015 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,015 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,015 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,016 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,016 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,016 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,016 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,017 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,017 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,017 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,018 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,018 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,018 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,019 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,020 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,020 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,020 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,020 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,021 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,022 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,022 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,022 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,023 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,023 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,023 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,024 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:35,025 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:43:35,025 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-16 12:43:35,025 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:43:35,025 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:43:35,026 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:43:35,026 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 12:43:35,026 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:43:35,026 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:43:35,026 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:43:35,026 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:43:35,027 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:43:35,028 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 68 transitions, 181 flow [2020-10-16 12:43:35,028 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 68 transitions, 181 flow [2020-10-16 12:43:35,028 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 181 flow [2020-10-16 12:43:35,044 INFO L129 PetriNetUnfolder]: 11/112 cut-off events. [2020-10-16 12:43:35,044 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 12:43:35,046 INFO L80 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 112 events. 11/112 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 264 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 109. Up to 12 conditions per place. [2020-10-16 12:43:35,050 INFO L117 LiptonReduction]: Number of co-enabled transitions 2700 [2020-10-16 12:43:35,688 INFO L132 LiptonReduction]: Checked pairs total: 6942 [2020-10-16 12:43:35,688 INFO L134 LiptonReduction]: Total number of compositions: 48 [2020-10-16 12:43:35,689 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 37 transitions, 119 flow [2020-10-16 12:43:41,745 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 36397 states. [2020-10-16 12:43:41,745 INFO L276 IsEmpty]: Start isEmpty. Operand 36397 states. [2020-10-16 12:43:41,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-16 12:43:41,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:41,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-16 12:43:41,746 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:41,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:41,746 INFO L82 PathProgramCache]: Analyzing trace with hash 16657360, now seen corresponding path program 1 times [2020-10-16 12:43:41,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:41,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375407740] [2020-10-16 12:43:41,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:41,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:43:41,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375407740] [2020-10-16 12:43:41,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:41,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 12:43:41,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [801671717] [2020-10-16 12:43:41,791 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:41,792 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:41,792 INFO L258 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-10-16 12:43:41,793 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:41,793 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:41,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:43:41,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:41,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:43:41,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:41,795 INFO L87 Difference]: Start difference. First operand 36397 states. Second operand 3 states. [2020-10-16 12:43:42,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:42,262 INFO L93 Difference]: Finished difference Result 22246 states and 100423 transitions. [2020-10-16 12:43:42,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:42,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-16 12:43:42,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:42,470 INFO L225 Difference]: With dead ends: 22246 [2020-10-16 12:43:42,470 INFO L226 Difference]: Without dead ends: 22246 [2020-10-16 12:43:42,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:43,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22246 states. [2020-10-16 12:43:43,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22246 to 22246. [2020-10-16 12:43:43,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22246 states. [2020-10-16 12:43:43,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22246 states to 22246 states and 100423 transitions. [2020-10-16 12:43:43,960 INFO L78 Accepts]: Start accepts. Automaton has 22246 states and 100423 transitions. Word has length 4 [2020-10-16 12:43:43,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:43,960 INFO L481 AbstractCegarLoop]: Abstraction has 22246 states and 100423 transitions. [2020-10-16 12:43:43,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:43:43,961 INFO L276 IsEmpty]: Start isEmpty. Operand 22246 states and 100423 transitions. [2020-10-16 12:43:43,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:43:43,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:43,961 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:43,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-16 12:43:43,962 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:43,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:43,962 INFO L82 PathProgramCache]: Analyzing trace with hash -667162749, now seen corresponding path program 1 times [2020-10-16 12:43:43,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:43,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239481270] [2020-10-16 12:43:43,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:43,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 12:43:43,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239481270] [2020-10-16 12:43:43,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:43,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:43:43,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [419947323] [2020-10-16 12:43:43,993 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:43,993 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:43,995 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-10-16 12:43:43,995 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:44,001 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:44,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:43:44,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:44,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:43:44,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:44,002 INFO L87 Difference]: Start difference. First operand 22246 states and 100423 transitions. Second operand 3 states. [2020-10-16 12:43:44,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:44,146 INFO L93 Difference]: Finished difference Result 7918 states and 35335 transitions. [2020-10-16 12:43:44,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:44,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-16 12:43:44,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:44,205 INFO L225 Difference]: With dead ends: 7918 [2020-10-16 12:43:44,205 INFO L226 Difference]: Without dead ends: 7918 [2020-10-16 12:43:44,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:44,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7918 states. [2020-10-16 12:43:45,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7918 to 7918. [2020-10-16 12:43:45,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7918 states. [2020-10-16 12:43:45,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7918 states to 7918 states and 35335 transitions. [2020-10-16 12:43:45,958 INFO L78 Accepts]: Start accepts. Automaton has 7918 states and 35335 transitions. Word has length 10 [2020-10-16 12:43:45,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:45,958 INFO L481 AbstractCegarLoop]: Abstraction has 7918 states and 35335 transitions. [2020-10-16 12:43:45,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:43:45,958 INFO L276 IsEmpty]: Start isEmpty. Operand 7918 states and 35335 transitions. [2020-10-16 12:43:45,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 12:43:45,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:45,962 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:45,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-16 12:43:45,962 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:45,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:45,963 INFO L82 PathProgramCache]: Analyzing trace with hash 369573413, now seen corresponding path program 1 times [2020-10-16 12:43:45,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:45,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99153664] [2020-10-16 12:43:45,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:43:45,983 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:43:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:43:45,995 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:43:46,005 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 12:43:46,005 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 12:43:46,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-16 12:43:46,006 WARN L371 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 12:43:46,007 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-16 12:43:46,017 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,017 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,018 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,018 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,018 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,018 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,019 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,019 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,019 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,019 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,019 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,019 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,020 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,020 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,020 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,020 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,021 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,021 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,021 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,022 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,022 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,022 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,022 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,022 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,023 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,023 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,023 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,023 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,023 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,023 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,024 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,024 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,024 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,024 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,024 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,024 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,027 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,027 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,027 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,028 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,029 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,029 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,029 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,030 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,031 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,031 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,031 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,031 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,032 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,032 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,032 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,032 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,039 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,039 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,039 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,040 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,041 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,041 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,041 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,041 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:46,043 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:43:46,043 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-16 12:43:46,043 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:43:46,043 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:43:46,044 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:43:46,044 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 12:43:46,044 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:43:46,044 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:43:46,044 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:43:46,044 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:43:46,046 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:43:46,046 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 78 transitions, 216 flow [2020-10-16 12:43:46,047 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 78 transitions, 216 flow [2020-10-16 12:43:46,047 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 78 transitions, 216 flow [2020-10-16 12:43:46,062 INFO L129 PetriNetUnfolder]: 13/131 cut-off events. [2020-10-16 12:43:46,062 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-16 12:43:46,064 INFO L80 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 131 events. 13/131 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 328 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 136. Up to 14 conditions per place. [2020-10-16 12:43:46,069 INFO L117 LiptonReduction]: Number of co-enabled transitions 3780 [2020-10-16 12:43:46,770 INFO L132 LiptonReduction]: Checked pairs total: 11549 [2020-10-16 12:43:46,770 INFO L134 LiptonReduction]: Total number of compositions: 52 [2020-10-16 12:43:46,771 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 48 transitions, 156 flow Received shutdown request... [2020-10-16 12:48:01,618 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-16 12:48:01,623 WARN L235 ceAbstractionStarter]: Timeout [2020-10-16 12:48:01,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:48:01 BasicIcfg [2020-10-16 12:48:01,626 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:48:01,630 INFO L168 Benchmark]: Toolchain (without parser) took 272201.37 ms. Allocated memory was 141.0 MB in the beginning and 2.4 GB in the end (delta: 2.3 GB). Free memory was 102.8 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2020-10-16 12:48:01,637 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 12:48:01,638 INFO L168 Benchmark]: CACSL2BoogieTranslator took 736.57 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.6 MB in the beginning and 163.1 MB in the end (delta: -60.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-10-16 12:48:01,645 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.43 ms. Allocated memory is still 204.5 MB. Free memory was 163.1 MB in the beginning and 161.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:48:01,646 INFO L168 Benchmark]: Boogie Preprocessor took 23.78 ms. Allocated memory is still 204.5 MB. Free memory was 161.1 MB in the beginning and 159.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-16 12:48:01,647 INFO L168 Benchmark]: RCFGBuilder took 372.61 ms. Allocated memory is still 204.5 MB. Free memory was 159.7 MB in the beginning and 143.5 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2020-10-16 12:48:01,650 INFO L168 Benchmark]: TraceAbstraction took 271015.84 ms. Allocated memory was 204.5 MB in the beginning and 2.4 GB in the end (delta: 2.2 GB). Free memory was 143.5 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2020-10-16 12:48:01,655 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 736.57 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.6 MB in the beginning and 163.1 MB in the end (delta: -60.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.43 ms. Allocated memory is still 204.5 MB. Free memory was 163.1 MB in the beginning and 161.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.78 ms. Allocated memory is still 204.5 MB. Free memory was 161.1 MB in the beginning and 159.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 372.61 ms. Allocated memory is still 204.5 MB. Free memory was 159.7 MB in the beginning and 143.5 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 271015.84 ms. Allocated memory was 204.5 MB in the beginning and 2.4 GB in the end (delta: 2.2 GB). Free memory was 143.5 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 88 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 2 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.5s, 29 PlacesBefore, 11 PlacesAfterwards, 28 TransitionsBefore, 8 TransitionsAfterwards, 180 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 24 TotalNumberOfCompositions, 146 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 297 VarBasedMoverChecksPositive, 14 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 29 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.3s, 40 PlacesBefore, 20 PlacesAfterwards, 38 TransitionsBefore, 16 TransitionsAfterwards, 540 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 2 ChoiceCompositions, 30 TotalNumberOfCompositions, 990 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 549 VarBasedMoverChecksPositive, 27 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 44 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.4s, 51 PlacesBefore, 27 PlacesAfterwards, 48 TransitionsBefore, 22 TransitionsAfterwards, 1080 CoEnabledTransitionPairs, 3 FixpointIterations, 7 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 38 TotalNumberOfCompositions, 2122 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 830 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 109 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.4s, 62 PlacesBefore, 38 PlacesAfterwards, 58 TransitionsBefore, 31 TransitionsAfterwards, 1800 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 40 TotalNumberOfCompositions, 4451 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1323 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 142 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.6s, 73 PlacesBefore, 45 PlacesAfterwards, 68 TransitionsBefore, 37 TransitionsAfterwards, 2700 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 48 TotalNumberOfCompositions, 6942 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1802 VarBasedMoverChecksPositive, 78 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 244 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.7s, 84 PlacesBefore, 56 PlacesAfterwards, 78 TransitionsBefore, 48 TransitionsAfterwards, 3780 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 52 TotalNumberOfCompositions, 11549 MoverChecksTotal - TimeoutResultAtElement [Line: 677]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 677). Cancelled while BasicCegarLoop was constructing initial abstraction,while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 56 places, 48 transitions, 156 flow. Already constructed 270862 states. Currently 36186 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. Started 6 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 270.7s, OverallIterations: 13, TraceHistogramMax: 6, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 264.9s, HoareTripleCheckerStatistics: 179 SDtfs, 85 SDslu, 64 SDs, 0 SdLazy, 89 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36397occurred 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: 3.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 774 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 6/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown